Autoclaved lightweight concrete panels

Abstract

This invention belongs to the field of building materials technology, specifically relating to an autoclaved lightweight concrete slab, comprising a concrete body and a framework. The concrete body includes cement, steel fibers, and expansive clay as ingredients. The framework includes left and right end plates, multiple connecting ribs, multiple receiving blocks, and multiple connectors. Receiving blocks are fixed within through holes in the left end plate, with their outer end faces flush and the cavity ports formed on the receiving blocks facing outwards. A slotted structure is formed on the right end plate, with the ports of the slotted structure facing outwards, and connectors are fixedly installed thereon, causing U-shaped arms on the connectors to extend outwards. Multiple connecting ribs connect the left and right end plates into a whole, allowing the U-shaped arms on the connectors to establish an interlocking connection with the cavities on the receiving blocks. This invention, by improving the framework and adapting the components and proportions, helps to effectively suppress cracking after the slabs are used to construct a wall, and improves the quality of wall construction.

Description

Technical Field

[0001] This invention belongs to the field of building materials technology, and specifically relates to an autoclaved lightweight concrete slab. Background Technology

[0002] Autoclaved aerated concrete (AAC) panels are widely used due to their excellent thermal insulation properties, lightweight nature, sound insulation, energy efficiency, and environmental friendliness. The main raw materials for AAC panels include cement, lime, fly ash, and slag, with the addition of appropriate amounts of foaming agents, bubble stabilizers, and regulators. After thorough mixing and stirring with water to form a slurry, the mixture undergoes casting, static curing / static setting, cutting, and high-pressure autoclaving to produce a porous concrete product, often referred to as autoclaved aerated concrete (AAC) panels. As a relatively new building material, AAC panels require precise alignment of the edges and corners during construction, and the panels arranged in rows and columns must achieve tight contact and a high degree of end-face fit. Therefore, the construction process is relatively reliant on the experience and skill of the workers, resulting in slow construction speeds and a tendency for cracking at the joints between panels. Summary of the Invention

[0003] To address the problems existing in the prior art, the present invention provides an autoclaved lightweight concrete slab, which helps to effectively suppress the occurrence of cracks that may occur after the slab is used to build a wall.

[0004] The technical solution adopted by this invention to solve its technical problem is: an autoclaved lightweight concrete slab, comprising a concrete body and a skeleton. The concrete body comprises the following ingredients in parts by weight: 30 to 45 parts cement, 10 to 25 parts lime, 5 to 8 parts fly ash, 0.5 to 2.5 parts alumina-containing slag, 1 to 2.5 parts steel fiber, and 0.5 to 3.5 parts expansive clay. The skeleton comprises a left end plate, a right end plate, multiple connecting bars, multiple receiving blocks, and multiple connectors.

[0005] The receiving blocks are fixedly installed in multiple through holes opened on the left end plate, so that the outer end face of the receiving block is flush with the outer end face of the left end plate and the port of the cavity formed on the outer end face of the receiving block faces outward.

[0006] A slotted structure is formed on the right end plate, which is oriented left-right to correspond to the distribution positions of each receiving block, with the ports of the slotted structure facing outwards. Connectors are fixedly installed at the slotted structures on the right end plate, with the U-shaped arms formed on the free end sides of the connectors extending outwards relative to the outer end face of the right end plate.

[0007] The left and right end plates are connected as a whole using multiple connecting ribs. This allows the U-shaped arms on the connector to establish an insertion connection with the cavity on the receiving block.

[0008] Optionally, the ingredients include 1.3 to 2.0 parts by weight of steel fiber and 0.5 to 1.3 parts by weight of expanded clay.

[0009] Optionally, a radially extending flange is formed on the outer wall of the receiving block, near its closed end. A pair of opposing wedge-shaped protrusions are formed on the inner wall of the cavity, near the inner bottom, with the protruding ends of the wedge-shaped protrusions relatively close to the inner bottom surface of the cavity, thus forming a groove or locking structure inside the cavity. The receiving block is interference-fitted with the through-hole on the left end plate, and the flange contacts the inner wall of the left end plate located outside the inner port of the through-hole.

[0010] Teeth are formed at the ends of the two arm plates of the U-shaped arm, and on the outer surface of each arm plate. An elastic deformation zone is also formed at the root of the arm plate. After the connector is installed on the right end plate, the two arm plates of the U-shaped arm are positioned opposite each other. The teeth of the front arm plate protrude forward, and the teeth of the rear arm plate protrude backward. The elastic deformation zone allows the two arm plates of the U-shaped arm to elastically deform from their roots, causing the free ends of the two arm plates to move closer together and further apart, thus changing the front-to-back position of the teeth on the two arm plates.

[0011] As the U-shaped arm is gradually inserted into the cavity, the front and rear wedge-shaped protrusions can contact the outer surfaces of the front and rear retaining teeth respectively, and can press the two retaining teeth to move forward or backward, so that the two arm plates produce elastic deformation, causing the free ends of the arm plates to gradually approach each other, and finally the two retaining teeth can simultaneously wrap around to the inner side of the protruding ends of the two wedge-shaped protrusions, and establish a surface contact matching connection with the two retaining slots respectively, thus connecting the receiving block and the connecting part in the left and right direction to form a whole.

[0012] Optionally, an elastic pad is fixedly provided on the inner bottom surface of the cavity. After the U-shaped arm is inserted into the cavity and the locking teeth match the locking slots, the free end of the locking teeth can remain embedded in the elastic pad, that is, the end face of the locking teeth can compress the elastic pad to undergo elastic deformation, so that the end of the locking teeth is pressed into the elastic pad.

[0013] Optionally, a coating is applied to the outer end face of the left end plate and / or the outer end face of the right end plate, and the coating is designed to be elastically deformable in the left-right direction. In other words, an elastic coating is applied to the outer end face of the left end plate and / or the outer end face of the right end plate.

[0014] Optionally, a threaded hole corresponding to the connector is provided on the right end plate, that is, the slot structure on the right end plate is a threaded hole. A screw body is formed on the connector, and the screw body is matched with the threaded hole on the right end plate, thereby fixing the connector on the right end plate.

[0015] Optionally, the slot structure on the right end plate includes a slot 1 and multiple slot 2 formed on the outer end wall of the right end plate, with slot 1 located at the edge of the wall and slot 2 located inside the wall. Slot 1 and multiple slot 2 are distributed alternately front and back. A straight-line insertion interface extending in the front-back direction is formed on slot 1. Slot 2 is an L-shaped slot, with the long side end of the L-shaped slot extending towards the end of slot 2 away from slot 1, so that straight-line insertion interfaces with the same extension direction can be formed on slot 1 and slot 2.

[0016] Correspondingly, the connectors are fixedly mounted on the movable carrier plate. A hook arm 1 that corresponds to and matches the first groove, and multiple hook arms 2 that correspond to and match the second groove, are formed on the movable carrier plate. Hook arms 1 can establish a plug-in fixed connection with the first groove in the front-back direction, and hook arms 2 can establish plug-in fixed connections with the second groove in the front-back direction respectively. By fixing the movable carrier plate to the right end plate, multiple connectors can be quickly fixed to the right end plate during masonry work, improving masonry efficiency.

[0017] If the first groove is located at the rear edge of the outer end wall of the right end plate, then multiple second grooves are located opposite each other in front of the first groove and formed inside the outer end wall. During operation, the first hook arm is gradually inserted into the first groove from the rear to the front, and the second hook arm first extends into the rear of the second groove, and then moves forward relative to the second groove to be inserted into the second groove.

[0018] Optionally, multiple layers of connecting ribs are arranged alternately in the vertical direction, with multiple connecting ribs in each layer. The height of the connecting ribs in the uppermost layer is lower than the upper surface of the left end plate and the upper surface of the right end plate, while the height of the connecting ribs in the lowermost layer is higher than the lower surface of the left end plate and the lower surface of the right end plate. The multiple connecting ribs in each layer are distributed alternately in the front-to-back direction.

[0019] Optionally, multiple vertically upward-extending convex columns and multiple vertically downward-extending convex columns are formed on the connecting rib. Movable pipe assemblies are fixedly provided on at least some of the upward-extending convex columns, and fixed pipe assemblies are fixedly provided on at least some of the downward-extending convex columns, ensuring that the distribution positions of each movable pipe assembly and each fixed pipe assembly are vertically aligned, satisfying a certain verticality deviation.

[0020] The moving tube assembly includes an outer tube and a tongue rod and a pushing part disposed within a multi-stage countersunk hole formed in the upper part of the outer tube. The pushing part includes a base block and a spring-like bladder. The lower end of the outer tube is fixedly connected to the convex column, enabling the outer tube to maintain a vertically extending state, that is, enabling the cavity of the moving tube assembly to maintain a vertically upward extending state. The upper part of the stationary tube assembly is fixedly connected to the convex column, enabling the cavity of the stationary tube assembly to maintain a vertically downward extending state.

[0021] The lower end of the spring-shaped capsule is fixedly connected to the base block, and the communicating cavity formed on the base block communicates with the capsule cavity of the spring-shaped capsule. A radial flange is formed in the middle of the tongue rod, and after the lower part of the tongue rod is inserted into the upper end of the spring-shaped capsule, the lower end face of the radial flange contacts the upper end face of the spring-shaped capsule. The sidewall of the radial flange can contact the inner wall of the upper part of the multi-stage countersunk hole, allowing the tongue rod to move vertically relative to the outer tube. Grouting holes are formed on the wall of the communicating cavity, and pipe fittings are provided between the grouting holes of the multiple pushing parts, which establish a communication relationship between the communicating cavities on each pushing part. In the initial state, the upper part of the tongue rod corresponds to the upper cavity of the multi-stage countersunk hole, and the upper end of the tongue rod is located inside the upper port of the outer tube.

[0022] Between two stacked plates, the tongues of the moving pipe assemblies on the lower plate can be inserted into the cavities of the fixed pipe assemblies on the upper plate, thus fixing the two stacked plates together vertically.

[0023] The outer diameter of the upper part of the tongue rod is not greater than the inner diameter of the lumen of the fixed pipe assembly, preferably the former being smaller than the latter. Furthermore, it is also preferable to implement an embodiment in which a portion of the upper wall section of the tongue rod can establish an interference fit with a portion of the lumen of the fixed pipe assembly through an elastic element placed between their opposing circumferential surfaces. This can be achieved by, for example, by fitting an elastic washer onto the wall of the upper part of the tongue rod, or by providing elastic ribs on the inner side of the inner wall of the lumen of the fixed pipe assembly.

[0024] To prevent grout from flowing into the outer pipe and the cavity of the fixed pipe assembly during grouting, a sealing body can be installed at the upper end of the outer pipe and at the lower end of the cavity of the fixed pipe assembly. The sealing body can be a sealing membrane or a mating body composed of a plug ring and a cap. The upper end of the tongue rod can be formed into a pointed tip (cone) or a conical cylinder. The lower outer diameter of the pointed tip should not exceed the outer diameter of the upper part of the tongue rod, and the lower outer diameter of the conical cylinder should not exceed the outer diameter of the upper part of the tongue rod.

[0025] Optionally, the skeleton also includes two mesh bodies, one of which matches the moving pipe groups located above the connecting ribs, and the other mesh body matches the fixed pipe groups located below the connecting ribs.

[0026] The mesh body has through-hole channels with the axis running vertically. Both the moving pipe group and the fixed pipe group can extend upward or downward through the through-hole channels on the mesh body, and the outer wall of the moving pipe group and the outer wall of the fixed pipe group respectively contact the inner wall of each through-hole channel to establish an interference fit relationship.

[0027] The beneficial effects of this invention are as follows: By adjusting the skeleton structure of the autoclaved lightweight concrete (AFC) panels and adaptively adjusting the composition of the concrete in the AFC panels to adapt to the improved skeleton structure, a strong and stable bond can be formed. After optimizing the skeleton structure, the connection form between the AFC panels is improved, which enhances the compactness, stability, and reliability of the mating surfaces between the panels. This helps to effectively suppress cracking after the panels are used to construct the wall, significantly reducing the probability of cracking and minimizing the size of any cracks that do occur, ensuring that cracks are at most narrow and easy to repair later. Furthermore, the skeleton structure of the panels involved in this invention greatly improves the efficiency of masonry construction, reduces the dependence on the experience of the operators, and facilitates the modular production of the panels.

[0028] By applying an elastic coating to the outer end face of the left and / or right end plates, the possibility of cracking between the mating surfaces of the plates can be nearly eliminated. By allowing the paste-like fluid injected into the spring-like bladder to expand and rupture the bladder wall after reaching a certain internal pressure, and flowing into the opposing surfaces of the two mating plates and into the cavity of the tube assembly wrapped around the tongue rod, the stability of the plates stacked in the vertical plane can be greatly improved, the overall masonry effect between the plates can be significantly improved, and the possibility of the two plates shifting laterally can be further suppressed, thus helping to further suppress cracking after the plates are masonry into a wall. Attached Figure Description

[0029] Figure 1 This is a top-view cross-sectional structural diagram of the present invention.

[0030] Figure 2 This is a schematic diagram of the main view cross-sectional structure of the present invention.

[0031] Figure 3 This is a top-view cross-sectional view of the skeleton structure in this invention.

[0032] Figure 4 for Figure 3 A magnified schematic diagram of the structure at point A in the middle.

[0033] Figure 5 This is a schematic cross-sectional view of the receiving block in this invention.

[0034] Figure 6 This is a side view of the receiving block in this invention.

[0035] Figure 7 This is a cross-sectional structural diagram of the connector in this invention.

[0036] Figure 8 This is a side view of the connector structure in this invention.

[0037] Figure 9 This is a schematic diagram of the concrete slabs of the present invention being connected laterally by means of their skeleton.

[0038] Figure 10 for Figure 9 A magnified schematic diagram of the structure at point B in the middle.

[0039] Figure 11 This is a schematic diagram of the transverse connection structure of the sheet metal involved in this invention.

[0040] Figure 12 for Figure 11 A magnified schematic diagram of the structure at point C.

[0041] Figure 13 This is a schematic diagram of the assembly process of the skeleton optimization structure in this invention.

[0042] Figure 14 This is a schematic diagram of another improved skeleton structure in this invention.

[0043] Figure 15 This is a cross-sectional schematic diagram of the plate material involved in the present invention being connected in the vertical direction by means of its skeleton.

[0044] Figure 16 for Figure 15 A magnified schematic diagram of the structure at point D.

[0045] In the diagram: 100 Plate; 200 Frame; 10 Concrete body; 20 Mesh; 30 Left end plate; 31 Through hole; 40 Right end plate; 41 Threaded hole; 42 Movable carrier plate; 421 Hook arm one; 422 Hook arm two; 43 Groove one; 44 Groove two; 50 Connecting rib; 51 Protruding column; 60 Receiving block; 61 Cavity; 62 Edge plate; 63 Wedge-shaped protrusion; 64 Slot; 65 Elastic pad; 70 Connector; 71 U-shaped Arm, 711 locking tooth, 712 elastic deformation zone, 72 screw body; 80 moving tube assembly, 81 outer tube, 811 multi-stage countersunk hole, 812 conical surface, 813 radial inclined groove, 82 tongue rod, 821 radial flange, 822 tip, 83 pushing part, 831 bottom block, 8311 connecting cavity, 8312 grouting hole, 832 spring-shaped bladder, 84 plug ring, 85 sealing cap, 851 top wall; 90 fixed tube assembly, 91 sealing membrane body. Detailed Implementation

[0046] The structures, proportions, and sizes illustrated in the accompanying drawings are merely for illustrative purposes and to aid those skilled in the art in understanding and reading the invention. They are not intended to limit the scope of the invention and therefore have no substantial technical significance. Any modifications to the structure, changes in proportions, or adjustments to size, provided they do not affect the effectiveness or purpose of the invention, should still fall within the scope of the technical content disclosed herein. Furthermore, terms such as "upper," "lower," "front," "rear," and "middle" used in this specification are merely for clarity and not intended to limit the scope of the invention. Changes or adjustments to their relative relationships, without substantially altering the technical content, should also be considered within the scope of the invention's implementation.

[0047] Figures 1 to 16 The presented autoclaved lightweight concrete panel (hereinafter referred to as panel 100) differs from existing autoclaved lightweight concrete panels in that it contains an innovative structural skeleton 200. Simultaneously, the ingredients and proportions forming the concrete body 10 have been adapted to existing technology to ensure a reliable, strong, and tight bond between the skeleton 200 and the concrete body 10, meeting toughness requirements and ensuring that the invention achieves its intended effect.

[0048] The plate 100 of the present invention includes a concrete body 10 and a skeleton 200. The concrete body 10 comprises the following ingredients in parts by weight: 30 to 45 parts cement, 10 to 25 parts lime, 5 to 8 parts fly ash, 0.5 to 2.5 parts alumina slag, 1 to 2.5 parts steel fiber, and 0.5 to 3.5 parts expansive clay. Preferably, the concrete body 10 also comprises the following ingredients in parts by weight: 1.3 to 2.0 parts steel fiber and 0.5 to 1.3 parts expansive clay. The skeleton 200 includes a left end plate 30, a right end plate 40, a plurality of connecting ribs 50, a plurality of receiving blocks 60, and a plurality of connectors 70.

[0049] The receiving block 60 is fixedly installed in the multiple through holes 31 opened on the left end plate 30, so that the outer end face of the receiving block 60 is flush with the outer end face of the left end plate 30 and the port of the cavity 61 formed on the outer end face of the receiving block 60 faces outward.

[0050] A slotted structure is formed on the right end plate 40, which is oriented left and right relative to the distribution positions of each receiving block 60, with the ports of the slotted structure facing outward. The connectors 70 are fixedly installed at the slotted structures of the right end plate 40, with the U-shaped arms 71 formed on the free end side of the connectors 70 extending outward relative to the outer end face of the right end plate 40.

[0051] The left end plate 30 and the right end plate 40 are connected into a whole by multiple connecting ribs 50. This allows the U-shaped arm 71 on the connector 70 to establish an insertion connection with the cavity 61 on the receiving block 60.

[0052] The preparation method of the autoclaved lightweight concrete slabs mentioned above generally includes the following process.

[0053] To prepare the slurry, mix 30 to 35 parts by weight of cement, 10 to 15 parts by weight of lime, 5 to 8 parts by weight of fly ash, 0.5 to 1.0 parts by weight of aluminum slag, 1.2 to 1.5 parts by weight of steel fiber, and 0.8 to 1.2 parts by weight of expanded clay evenly, and then add water and stir to form a slurry.

[0054] Assemble the skeleton 200, and fix receiving blocks 60 into the multiple through holes 31 opened on the left end plate 30, so that the outer end face of the receiving block 60 is flush with the outer end face of the left end plate 30 and the port of the cavity 61 formed on the outer end face of the receiving block 60 faces outward. The ports of the slot structures formed on the right end plate 40 face outward, and the distribution positions of each slot structure correspond left-right to the distribution positions of each receiving block 60. Connect the left end plate 30 and the right end plate 40 into a whole using multiple connecting ribs 50. Multiple layers of connecting ribs 50 can be distributed vertically, with each layer containing multiple connecting ribs 50. The height of the uppermost connecting rib 50 should be lower than the upper end face of the left end plate 30 and the upper end face of the right end plate 40, and the height of the lowermost connecting rib 50 should be higher than the lower end face of the left end plate 30 and the lower end face of the right end plate 40. Generally, the upper surface of the left end plate 30 is flush with the upper surface of the right end plate 40, and the lower surface of the left end plate 30 is flush with the lower surface of the right end plate 40.

[0055] The assembled frame 200 is placed in the mold groove during casting, with the outer end face of the left end plate 30 and the outer end face of the right end plate 40 adhering to the left and right inner walls of the groove, respectively, to block the ports of each cavity 61 and the ports of each slot structure, preventing grout from flowing in. The addition of steel fibers and expanded clay improves the toughness and crack resistance of the plate 100, ensuring that the hardened concrete 10 can bond tightly and firmly with the frame 200, forming a unified whole that is less prone to loosening due to vibration during transportation, handling, and construction.

[0056] For static curing, the mold containing the slurry is sent into the curing room for gas-generating static curing. The temperature in the curing room is controlled between 50 and 75 degrees Celsius, and the curing time is controlled between 1.3 and 2.5 hours.

[0057] Steam curing: Place the cured board material 100 into a steam curing kettle for high-pressure steam curing. The steam curing temperature is controlled at 180 to 210 degrees Celsius, and the pressure inside the kettle is controlled at 1.1 to 1.3 MPa.

[0058] The connector 70 is fixed, and the connector 70 is fixedly installed at the slot structure of the right end plate 40, so that the U-shaped arm 71 formed on the free end side of the connector 70 extends outward relative to the outer end face of the right end plate 40.

[0059] The bricklaying process involves aligning the left end plate 30 of one plate 100 with the right end plate 40 of another plate 100, ensuring that the receiving blocks 60 distributed on the left end plate 30 correspond one-to-one with the connecting pieces 70 on the right end plate 40. The U-shaped arms 71 on each connecting piece 70 can be inserted into the cavities 61 of each receiving block 60, thus completing the lateral connection between the two plates 100. Connecting pieces 70 may not be installed on the plate 100 at the end, and the slotted structures on the right end plate 40 can be sealed using a paste-like substance such as cement or putty.

[0060] A radially extending flange 62 is formed on the outer wall of the receiving block 60, near its closed end. A pair of opposing wedge-shaped protrusions 63 are formed on the inner wall of the cavity 61, near its inner bottom, with the protruding ends of the wedge-shaped protrusions 63 positioned close to the inner bottom surface of the cavity 61, forming a groove 64 (or groove structure) inside the cavity 61. After the receiving block 60 is fixed to the left end plate 30, the flange 62 contacts the inner wall of the left end plate 30, located outside the inner port of the through hole 31, thus preventing the receiving block 60 from moving outward relative to the through hole 31. An interference fit is made between the receiving block 60 and the through hole 31 on the left end plate 30, establishing a strong and reliable relative fixation between them, allowing the receiving block 60 to withstand significant external tensile forces in the left-right direction without easily detaching from the left end plate 30.

[0061] Correspondingly, a locking tooth 711 is formed at the end of the U-shaped arm 71 and on its outer surface, such that the outer surface of the locking tooth 711 is formed as a bevel and the end is formed with a rounded corner. See also Figure 4 An elastic deformation zone 712 is formed at the root of the U-shaped arm 71, and the elastic deformation zone 712 enables the two arm plates of the U-shaped arm 71 to elastically deform from their root, thereby causing the free ends of the two arm plates of the U-shaped arm 71 to move closer to each other and further away from each other, while moving in the front-back direction with the locking teeth 711.

[0062] During the process of gradually inserting the U-shaped arm 71 into the cavity 61, the wedge-shaped protrusion 63 will contact the outer side of the arm plate of the U-shaped arm 71 (i.e., contact the outer side of the retaining tooth 711), and gradually press the free end of the arm plate, causing the two arm plates of the U-shaped arm 71 to undergo elastic deformation to make room, and continue to move / insert into the inner end of the cavity 61. Finally, the retaining tooth 711 at the end of the arm plate will bypass the wedge-shaped protrusion 63 and match the retaining groove 64, so that the receiving block 60 and the connecting member 70 are connected as a whole, that is, the two plates 100 can be tightly connected into a whole in the lateral direction, and it is not easy for lateral deviation to occur.

[0063] To establish a tighter mating state between the receiving block 60 and the connector 70, that is, between the left and right ends of the two plates 100, an elastic pad 65 is fixedly provided on the inner bottom surface of the cavity 61, and the elastic pad 65 has a certain thickness, generally in the range of 3mm to 10mm. When the U-shaped arm 71 on the connector 70 is fully inserted into the cavity 61, the end of the U-shaped arm 71 will compress the elastic pad 65 to undergo elastic deformation (generating a deformation in the left and right direction), so that the elastic pad 65 applies a reverse elastic force on the U-shaped arm 71, or on the connector 70, causing the relative surfaces between the locking teeth 711 and the locking groove 64 to make close contact, thus enabling the connector 70 and the receiving block 60 to maintain a tight insertion connection, and generating a tensile force F between the two plates 100 that bring their relative surfaces closer together, as shown in the figure. Figure 9 As shown. If the material used to make the elastic pad 65 is relatively soft and has a certain degree of fluidity, when the elastic pad 65 undergoes elastic deformation, it may also seep into the gap between the relative surfaces of the tooth 711 and the groove 64, thereby better ensuring the stability and reliability of the connection between the connector 70 and the receiving block 60.

[0064] To improve the mating quality between the left end plate 30 and the right end plate 40, that is, to improve the bonding quality between the left and right opposing surfaces of the two plates 100, so that the left and right opposing surfaces can fully contact each other and the gaps are smaller, a coating is applied to the outer surface of the left end plate 30 and / or the right end plate 40. This coating can elastically deform in the thickness direction and can be called an elastic coating. The thickness (dimension in the left-right direction) of the elastic coating on the left end plate 30 and / or the right end plate 40 is generally in the range of 0.3 mm to 2 mm. The cavity 61 port of the receiving block 60 can be converging inward relative to the outer surface of the elastic protrusion layer. That is, when the elastic coating is applied to the left end plate 30, it is only necessary to make the outer end face of the receiving block 60 (the port of the cavity 61) flush with the outer end face of the body of the left end plate 30.

[0065] like Figures 1 to 2 , Figures 9 to 10 ,as well as Figure 14 As shown, the right end plate 40 and the connector 70 are fixedly connected by a nut. This connection method generally requires the fixing of the connector 70 and the right end plate 40 to be completed before pouring the grout, which easily complicates the mold groove structure and increases production costs and process difficulty. To overcome the aforementioned problems, such as... Figures 3 to 4 , Figures 11 to 12 As shown, a threaded hole 41 (preferably a countersunk hole) is pre-machined on the right end plate 40, and a corresponding screw body 72 is formed on the connector 70. The connector 70 is fixedly connected as a whole by the matching of the screw body 72 and the threaded hole 41. However, this connection structure increases the complexity of fixing the connector 70 to the right end plate 40, affecting the efficiency of the masonry operation. To overcome this problem, see... Figure 13 As shown, a first groove 43 and multiple second grooves 44 are formed on the outer wall surface of the right end plate 40. The first groove 43 is located at the edge of the wall surface, and the second grooves 44 are located inside the wall surface. The first groove 43 and the multiple second grooves 44 are distributed alternately in the front-back direction. A straight-line insertion interface extending in the front-back direction is formed on the first groove 43. The second groove 44 is an L-shaped groove, and the long side end of the L-shaped groove extends towards the end side of the second groove 44 away from the first groove 43, so that straight-line insertion interfaces with the same extension direction can be formed on both the first groove 43 and the second groove 44.

[0066] Correspondingly, the connectors 70 are pre-fixed on the movable carrier plate 42 (pre-assembled in the workshop), or the connectors 70 and the movable carrier plate 42 are integrally formed. The movable carrier plate 42 has a first hook arm 421 that corresponds to and matches the first groove 43, and multiple second hook arms 422 that correspond to and match the second groove 44. The first hook arm 421 can be inserted and fixedly connected to the first groove 43 in the front-back direction, and the second hook arm 422 can be inserted and fixedly connected to the second groove 44 in the front-back direction. The movable carrier plate 42 is then fixedly installed on the right end plate 40, meaning that multiple connectors 70 can be quickly fixed to the right end plate 40 during construction. The first hook arm 421 is gradually inserted into the first groove 43 from the rear to the front. The second hook arm 422 first extends into the rear of the second groove 44, and then moves forward relative to the second groove 44 to be inserted into the second groove 44, as shown in the figure. Figure 13 .

[0067] To ensure a stable and reliable connection between the two stacked boards 100, such as Figures 15 to 16As shown, a tongue-and-stick plug-in connection structure can be configured. Therefore, the skeleton 200 structure involved in the above steps needs to be optimized, and multiple moving pipe assemblies 80 and multiple stationary pipe assemblies 90 need to be configured, as detailed below.

[0068] Multiple vertically upward and vertically downward protruding columns 51 are fixedly provided on the connecting rib 50. At least some of the vertically upward protruding columns 51 are fixedly provided with moving pipe assemblies 80, and at least some of the vertically downward protruding columns 51 are fixedly provided with fixed pipe assemblies 90, and the distribution positions of the moving pipe assemblies 80 and the distribution positions of the fixed pipe assemblies 90 are vertically aligned.

[0069] When multiple connecting ribs 50 are provided, multiple moving pipe groups 80 are arranged only on the part of the protruding column 51 of the uppermost connecting rib 50, and the axis of each moving pipe group 80 extends in the vertical direction; multiple fixed pipe groups 90 are arranged only on the part of the protruding column 51 of the lowermost connecting rib 50, and the axis of each fixed pipe group 90 extends in the vertical direction.

[0070] To better define the axial direction of each moving pipe assembly 80 and keep it vertical, and to define the axial direction of each fixed pipe assembly 90 and keep it vertical, and to ensure that the distribution positions of each moving pipe assembly 80 and each fixed pipe assembly 90 correspond one-to-one and form a vertically aligned relationship, a mesh body 20 (or mesh plate) is preferably provided above the uppermost connecting rib 50 and below the lowermost connecting rib 50. Through-hole channels with vertical axes are formed on the mesh body 20. Both the moving pipe assembly 80 and the fixed pipe assembly 90 can pass through the through-hole channels on the mesh body 20, and the outer wall of the moving pipe assembly 80 (i.e., the outer wall of the outer pipe 81, mentioned below) and the outer wall of the fixed pipe assembly 90 are in contact with the inner wall of their respective through-hole channels. With the constraint of the net body 20, when grout is poured into the mold groove / cavity, the axial direction of each moving pipe group 80 and the axial direction of each fixed pipe group 90 can be better suppressed from being significantly tilted relative to the vertical direction, and the axial direction of the moving pipe group 80 and the fixed pipe group 90 can be better guaranteed to meet the verticality requirements (for construction).

[0071] The lower parts of each moving pipe assembly 80 are connected by pipe fittings, connecting the spring-shaped bladder 832 located on the inner end of the outer pipe 81 of the moving pipe assembly 80, and leading the free end of the pipe fittings to the outside of the skeleton 200. The tongue rod 82 located inside the outer pipe 81 is matched with the spring-shaped bladder 832, and the upper end of the tongue rod 82 is positioned near the sealing body (i.e., the cap 85 shown in the figure) located at the upper port of the outer pipe 81. When the axis of the tongue rod 82 is vertical and driven by the spring-shaped bladder 832, the upper end of the tongue rod 82 can move vertically upwards and pass through the sealing body, extending upwards to the outside. The axis of the cavity of the fixed pipe assembly 90 extends vertically, and the port of the cavity faces downwards. To prevent grout from entering the cavity of the fixed pipe assembly 90 during pouring, a sealing membrane 91 is provided at the lower port of the cavity of the fixed pipe assembly 90.

[0072] Extend the free end of the tube connecting the spring-shaped bladder 832 outside the mold, making the top surface of the sealing body at the upper end of the outer tube 81 flush with the upper port of the mold groove (if the top surface of the sealing body at the upper end of the outer tube 81 extends upward relative to the mold groove port, the sealing body needs to be cut later to make its upper end flush with the upper port of the mold groove). Place the lower end of the fixed tube assembly 90 against the bottom surface of the mold groove.

[0073] After the connecting parts 70 and receiving blocks 60 of the same layer are all plugged in and connected, that is, after the city wall is built, a paste-like fluid is pumped into the spring-shaped bladder 832 through the pipe connecting the spring-shaped bladder 832 to cause the spring-shaped bladder 832 to extend upward in the vertical direction, thereby pushing the tongue rod 82 to move upward, causing the upper end of the tongue rod 82 to pass through the sealing body at the upper end of the outer tube 81 and be inserted into the cavity of the fixed tube group 90 located directly above it, thus completing the fixed connection between the multiple plates 100 stacked in the vertical plane.

[0074] In implementation, multiple stress indentations can be provided on the upper part of the spring-shaped bladder 832, preferably arranged alternately around the circumference. This creates multiple weak areas on the wall of the spring-shaped bladder 832, allowing it to fully expand and inflate to a certain extent, causing it to crack at the stress indentations. This allows the paste-like fluid pumped into the spring-shaped bladder 832 to seep into the lumen of the outer tube 81 and flow upwards along the lumen of the outer tube 81, seeping into the opposing surfaces between the two adjacent plates 100 and into the lumen of the fixed tube assembly 90. This encases the upper part of the tongue rod 82 inserted into the lumen of the fixed tube assembly 90, bonding the upper part of the tongue rod 82 to the lumen of the fixed tube assembly 90 as a whole.

[0075] After the upper part of the tongue 82 is fully inserted into the lumen of the fixed tube assembly 90, the lower part of the tongue 82 remains in a matching state with the outer tube 81, that is, a portion of the lower part of the tongue 82 always remains in the lumen of the outer tube 81. It should be noted that, generally, the outer diameter of the tongue 82 should not be greater than the inner diameter of the lumen of the fixed tube assembly 90, preferably the former being smaller than the latter; however, when the stress indentation is provided on the wall of the spring-shaped bladder 832, the outer diameter of the tongue 82 should be smaller than the inner diameter of the lumen of the fixed tube assembly 90, and the diameter difference is preferably in the range of 2mm to 4mm, and should not exceed 8mm. To ensure that the tongue 82 can be smoothly inserted into the lumen of the fixed tube assembly 90, the upper end of the tongue 82 is formed as a pointed tip 822, such as a conical section or a conical cylindrical end. If a tapered cylindrical end is selected, the smaller diameter end of the tapered cylindrical end faces upward, and the outer diameter of the larger diameter end of the tapered cylindrical end is not greater than the outer diameter of the upper part of the tongue 82.

[0076] like Figures 15 to 16 As shown, the lower part of the outer tube 81 is inserted into and connected to the protruding column 51 with an interference fit. Multiple radially inclined grooves 813 are formed on the outer wall of the outer tube 81, arranged alternately vertically, and extend downwards from the outside inwards. The radially inclined grooves 813 can be arc-shaped grooves extending in the circumferential direction or annular grooves. The radially inclined grooves 813 increase the bonding strength between the moving tube assembly 80, or the outer tube 81 and the concrete body 10.

[0077] The lower part of the spring-shaped bladder 832 is provided with a base block 831, which can be integrally formed to create a pushing part 83. The base block 831 includes a communicating cavity 8311 that communicates with the cavity of the spring-shaped bladder 832, and a grouting hole 8312 is provided on the communicating cavity 8311. The pushing part 83 is inserted into the multi-stage countersunk hole 811 of the outer tube 81, and the multi-stage countersunk hole 811 can be understood as the cavity of the moving tube assembly 80. This positions the spring-shaped bladder 832 above the base block 831.

[0078] After being fixedly connected to the connecting rib 50, the port of the multi-stage countersunk hole 811 faces upward. An insertion hole is formed in the lower part of the wall of the outer tube 81, communicating with the inner bottom end of the multi-stage countersunk hole 811. The tube connecting the spring-shaped bladder 832 is connected to the grouting hole 8312 on the bottom block 831 through the insertion hole, so that the lumen of the tube can (through the communicating cavity 8311) communicate with the bladder cavities of each spring-shaped bladder 832, and the paste-like fluid can be pumped into the communicating cavity 8311 of the bottom block 831 and fill the bladder cavities of the spring-shaped bladder 832, so as to cause the spring-shaped bladder 832 to extend and lengthen, and push the tongue rod 82 upward relative to the outer tube 81 or the upper part of the multi-stage countersunk hole 811 in the vertical direction, so as to push the upper end of the tongue rod 82 to the outside / above of the upper port of the outer tube 81.

[0079] The lower part of the tongue rod 82 is inserted into the spring-shaped capsule 832, i.e., the spring-shaped capsule 832 is annular with a circular opening at the top, and the outer wall of the lower part of the tongue rod 82 contacts the inner wall of the spring-shaped capsule 832. To enable the tongue rod 82 to move substantially vertically relative to the outer tube 81, a radial flange 821 is formed in the middle of the tongue rod 82. The sidewall of the radial flange 821 contacts and matches the inner wall of the upper cavity of the multi-stage countersunk hole 811. The radial flange 821 can be annular with a conical surface 812 with the small end facing downward, so as to facilitate full contact between the middle part of the tongue rod 82 and the upper port of the spring-shaped capsule 832 and to evenly distribute the thrust.

[0080] The sealing body on the upper part of the moving tube assembly 80 may be a sealing membrane (refer to the sealing membrane 91 at the lumen port of the fixed tube assembly 90). Alternatively, the sealing body on the upper part of the moving tube assembly 80 may include, for example... Figure 16 The diagram shows a plug ring 84 and a cap 85. The plug ring 84 is fixed to the upper port of the multi-stage countersunk hole 811 of the outer tube 81, forming an interference fit with the outer tube 81 to ensure that the two are firmly inserted into one piece. At the same time, the plug ring 84 also prevents the radial flange 821 of the tongue rod 82 from coming out of the upper port of the outer tube 81. The cap 85 is inserted into the annular cavity of the plug ring 84, and the top wall 851 of the cap 85 blocks the upper port of the cavity of the moving tube assembly 80, or in other words, blocks the upper port of the outer tube 81, so that the tip (tip 822) of the tongue rod 82 is hidden inside the outer tube 81. The upper end face of the top wall 851 of the cap 85 can be flush with the upper port of the groove on the mold, or it can extend upward / outward relative to the upper port of the groove on the mold. During the construction operation, the cap 85 can be removed from the moving pipe assembly 80 in advance. Preferably, the top wall 851 is made thin-walled and the tip 822 can pierce the top wall 851 of the cap 85 and extend to the upper part of the outer pipe 81.

[0081] The left end plate 30 and the right end plate 40 can be solid plates or perforated plates. The mesh 20 shown in the figure is only a schematic example, and the distribution of its mesh holes must correspond to the distribution positions of the moving pipe group 80 and the fixed pipe group 90. During the casting process, multiple support feet are provided on the front, back, left, and right sides of the mesh 20, so that the support feet on the mesh 20 can contact the inner wall surface of the mold groove, and contact the inner end surface of the left end plate 30 and the inner end surface of the right end plate 40, thereby fixing the mesh 20 in the mold groove. The support feet are preferably elastic support feet, which can produce slight elastic deformation in the left-right or front-back direction in the plane, to ensure that the mesh 20 can be firmly fixed in the mold groove without hindering demolding.

[0082] Multiple connectors 70 may be simultaneously distributed on the left end plate 30; similarly, multiple receiving blocks 60 may be simultaneously distributed on the right end plate 40. (See also...) Figure 14 This allows the connector 70 on the left end plate 30 to be inserted into the receiving block 60 on the right end plate 40, and simultaneously allows the receiving block 60 on the left end plate 30 to be inserted into the connector 70 on the right end plate 40.

[0083] The spring-shaped capsule 832 is preferably made of an elastic material with water permeability so that the paste fluid injected into the spring-shaped capsule 832 can harden; or the paste fluid used is a paste that can be oxidized and hardened.

[0084] The above embodiments are merely illustrative of the principles and effects of the present invention and are not intended to limit the invention. Many aspects of the present invention can be improved without departing from the overall concept. Those skilled in the art can modify or change the above embodiments without departing from the spirit and scope of the present invention. Therefore, all equivalent modifications or changes made by those skilled in the art without departing from the spirit and technical concept disclosed in the present invention should still be covered by the claims of the present invention.

Claims

1. An autoclaved lightweight concrete slab, comprising a concrete body (10) and a skeleton (200); the concrete body (10) comprises the following ingredients in parts by weight: 30 to 45 parts cement, 10 to 25 parts lime, 5 to 8 parts fly ash, and 0.5 to 2.5 parts alumina-containing slag; characterized in that: The concrete body (10) also includes the following ingredients in parts by weight: 1 to 2.5 parts of steel fiber and 0.5 to 3.5 parts of expansive clay; the skeleton (200) includes a left end plate (30), a right end plate (40), multiple connecting bars (50), multiple receiving blocks (60), and multiple connectors (70). The receiving block (60) is fixedly installed in the multiple through holes (31) opened on the left end plate (30), so that the outer end face of the receiving block (60) is flush with the outer end face of the left end plate (30) and the port of the cavity (61) formed on the outer end face of the receiving block (60) faces outward. A slot structure is formed on the right end plate (40) that is symmetrical to the distribution position of each receiving block (60) and the port of the slot structure faces outward; the connector (70) is fixedly installed at the slot structure of the right end plate (40) respectively, so that the U-shaped arm (71) formed on the free end side of the connector (70) extends outward relative to the outer end face of the right end plate (40); The left end plate (30) and the right end plate (40) are connected into a whole by multiple connecting ribs (50); so that the U-shaped arm (71) on the connector (70) can establish a plug-in connection with the cavity (61) on the receiving block (60); Multiple layers of connecting ribs (50) are provided alternately in the vertical direction, so that the multiple connecting ribs (50) in each layer are distributed alternately in front and behind; the height position of the uppermost connecting rib (50) is lower than the upper end face of the left end plate (30) and the upper end face of the right end plate (40), and the height position of the lowermost connecting rib (50) is higher than the lower end face of the left end plate (30) and the lower end face of the right end plate (40). Multiple vertically upward and downward extending convex columns (51) are formed on the connecting rib (50); at least some of the upward extending convex columns (51) are respectively fixed with moving pipe groups (80), and at least some of the downward extending convex columns (51) are respectively fixed with fixed pipe groups (90), and the distribution positions of the moving pipe groups (80) and the distribution positions of the fixed pipe groups (90) are vertically opposite to each other; The moving tube assembly (80) includes an outer tube (81) and a tongue rod (82) and a pushing part (83) disposed in a multi-stage countersunk hole (811) formed on the upper part of the outer tube (81); the pushing part (83) includes a bottom block (831) and a spring-shaped bladder (832); the lower part of the outer tube (81) is fixedly connected to the convex column (51); the upper part of the fixed tube assembly (90) is fixedly connected to the convex column (51); so that the outer tube (81) and the fixed tube assembly (90) are respectively kept in a vertically upward and downward extending state; The lower part of the spring-shaped capsule (832) is fixedly connected to the bottom block (831) and the connecting cavity (8311) of the bottom block (831) is connected to the capsule cavity of the spring-shaped capsule (832); a radial flange (821) is formed in the middle of the tongue rod (82) and after the lower part of the tongue rod (82) is inserted into the upper end of the spring-shaped capsule (832), the radial flange (821) contacts the upper end face of the spring-shaped capsule (832); the upper part of the tongue rod (82) corresponds to the upper cavity of the multi-stage countersunk hole (811) and the tongue rod (82) can move vertically relative to the outer tube (81); a grouting hole (8312) is formed on the wall of the connecting cavity (8311) and the grouting holes (8312) of the multiple pushing parts (83) are connected by a pipe.

2. The autoclaved lightweight concrete slab according to claim 1, characterized in that: By weight, the steel fiber is 1.3 to 2.0 parts and the expanded clay is 0.5 to 1.3 parts.

3. The autoclaved lightweight concrete slab according to claim 1 or 2, characterized in that: A radially extending flange (62) is formed on the outer wall of the receiving block (60) and near the closed end side; two opposing wedge-shaped protrusions (63) are formed on the inner wall of the cavity (61) and near the inner bottom, such that the protruding ends of the wedge-shaped protrusions (63) are relatively close to the inner bottom surface of the cavity (61), and a groove (64) can be formed inside the cavity (61); the receiving block (60) and the through hole (31) on the left end plate (30) are interference-fitted, and the flange (62) contacts the inner wall of the left end plate (30) located outside the inner port of the through hole (31); Teeth (711) are formed at the ends of the two arm plates of the U-shaped arm (71) and on the outer surface of the arm plates. An elastic deformation zone (712) is formed at the root of the arm plate. The elastic deformation zone (712) enables the two arm plates of the U-shaped arm (71) to undergo elastic deformation from the root, thereby causing the free ends of the arm plates to move closer to each other and further apart. When the U-shaped arm (71) is inserted into the cavity (61), the wedge-shaped protrusion (63) can contact the outer surface of the tooth (711) and force the two arm plates to undergo elastic deformation, so that the tooth (711) can bypass the wedge-shaped protrusion (63) and establish a surface contact matching connection with the groove (64).

4. The autoclaved lightweight concrete slab according to claim 3, characterized in that: An elastic pad (65) is fixedly provided on the inner bottom surface of the cavity (61); after the U-shaped arm (71) is inserted into the cavity (61) and the locking tooth (711) matches the locking groove (64), the free end of the locking tooth (711) can be kept in the state of being embedded in the elastic pad (65).

5. The autoclaved lightweight concrete slab according to claim 1 or 2, characterized in that: A coating is applied to the outer end face of the left end plate (30) and / or the outer end face of the right end plate (40), and the coating is capable of elastic deformation in the left-right direction.

6. The autoclaved lightweight concrete slab according to claim 1 or 2, characterized in that: The slot structure on the right end plate (40) is a threaded hole (41); the connector (70) has a screw body (72) that matches the threaded hole (41) to fix the connector (70) on the right end plate (40).

7. The autoclaved lightweight concrete slab according to claim 1 or 2, characterized in that: The slot structure on the right end plate (40) includes a slot 1 (43) and multiple slot 2 (44) formed on its outer end wall, with the slot 1 (43) located at the edge of the wall and the slot 2 (44) located inside the wall; the slot 1 (43) and multiple slot 2 (44) are distributed alternately front and back; a straight-line insertion interface extending in the front and back direction is formed on the slot 1 (43); the slot 2 (44) is an L-shaped slot, and the long side end of the L-shaped slot extends toward the slot 2 (44) away from the end side of the slot 1 (43), so that a straight-line insertion interface with the same extension direction can be formed on the slot 1 (43) and the slot 2 (44); The connector (70) is fixedly mounted on the movable carrier plate (42); a hook arm (421) that can be matched with the groove (43) is formed on the movable carrier plate (42), and a plurality of hook arms (422) that can be matched with the groove (44) are formed; the hook arm (421) can be connected to the groove (43) by insertion and fixed connection, and the hook arms (422) can be connected to the groove (44) by insertion and fixed connection respectively, and the movable carrier plate (42) is fixedly mounted on the right end plate (40).

8. The autoclaved lightweight concrete slab according to claim 1, characterized in that: The skeleton (200) also includes two mesh bodies (20), one mesh body (20) matches each moving pipe group (80) located above the connecting rib (50), and the other mesh body (20) matches each fixed pipe group (90) located below the connecting rib (50); through holes with the axis along the vertical direction are formed on the mesh body (20); both the moving pipe group (80) and the fixed pipe group (90) can pass through the through holes on the mesh body (20), and the outer wall of the moving pipe group (80) and the outer wall of the fixed pipe group (90) respectively contact the inner wall of each through hole.

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