Connection construction method for autoclaved aerated fiber anti-crack concrete ALC (autoclaved lightweight concrete) plates

Abstract

The invention discloses an autoclaved aerated fiber anti-crack concrete ALC plate connection construction method, and relates to the technical field of ALC plates. Performing shaping production and maintenance on the autoclaved aerated fiber anti-crack concrete ALC plate; the ALC board is typeset in advance, and the bottom is subjected to bedding; a special binder is smeared on the side face; the prestressed tendons of the first ALC plate are subjected to strand pulling and anchoring; the tops of the ALC plates are fixed by mounting hardwood wedges; the adjacent ALC plates are transported in place, and bedding is conducted at the bottoms; pre-stressed tendons penetrate through the ALC plate; a special binder is smeared on the side faces of the adjacent ALC plates; the ALC plate is installed and fixed, and the top of the ALC plate is wedged and fixed; mounting and fixing to a constructional column in the same manner; prestressed tendons of the LC plates are tensioned and anchored; plate joints and top seals of the ALC plates are sealed and blocked; the ALC plate is compacted and grouted; and maintaining. According to the construction method, the problems that in a traditional construction method, abutted seams between the plates are not tight, and cracking is caused due to different material shrinkage performance between the plates and the frame columns and the frame beams are solved.

Description

Technical Field

[0001] The invention belongs to the technical field of ALC boards, and particularly relates to a connection construction method for autoclaved aerated fiber crack-resistant concrete ALC boards. Background Art

[0002] Autoclaved aerated concrete panels are a lightweight, porous, and environmentally friendly building material made primarily from cement, lime, and silica sand, with varying amounts of anti-corrosion-treated steel mesh added according to structural requirements. Through high-temperature, high-pressure, and steam-curing processes, the panels are transformed into porous, crystalline structures. These panels are lighter than typical cementitious materials and offer unparalleled properties, including excellent fire resistance, fire protection, sound insulation, thermal insulation, and heat preservation.

[0003] The following quality risks exist in the construction of traditional autoclaved aerated concrete panels:

[0004] ① The adhesive is applied between the boards before installation. Due to the water absorption of the boards, the adhesive ratio is destroyed, resulting in the adhesive not being able to fill the tongue and groove joints well when the boards are spliced. Therefore, the fullness of the adhesive is extremely difficult to effectively control;

[0005] ② The gap between the plate and the upper structure beam is small, which is difficult to seal tightly in the later stage of installation, resulting in gas cavities in the wall of the enclosure structure, further causing the wall to lose its energy-saving performance;

[0006] ③ The panels are connected only by adhesives, resulting in poor seismic performance of the enclosing structure walls.

[0007] Therefore, a connection construction method of autoclaved aerated fiber crack-resistant concrete ALC panels as mentioned in the present invention is needed. Summary of the Invention

[0008] The purpose of the present invention is to provide a construction method for connecting autoclaved aerated fiber crack-resistant concrete ALC panels to solve the problems caused by the above-mentioned traditional construction methods, such as loose joints between panels and cracks between panels and frame columns and frame beams due to different material shrinkage properties.

[0009] To achieve the above object, the present invention provides the following technical solutions:

[0010] A method for connecting and constructing autoclaved aerated fiber crack-resistant concrete ALC panels, comprising the following steps:

[0011] Step 1: Standardized production and maintenance of autoclaved aerated fiber crack-resistant concrete ALC panels;

[0012] Step 2: ALC panels are transported to their proper locations;

[0013] Step 3: Pre-layout the ALC board and apply slurry on the bottom;

[0014] Step 4: Apply special adhesive to the side of the ALC board;

[0015] Step 5: Anchor the prestressed tendons of the first ALC board; fix the top of the ALC board by installing hardwood wedges;

[0016] Step 6: The adjacent ALC panels are transported to their locations and the bottom is slurried;

[0017] Step 7: ALC plate is threaded with prestressed tendons;

[0018] Step 8: Apply special adhesive to the sides of adjacent ALC boards; install and fix the ALC boards, and wed them tightly at the top;

[0019] Step 9: Install and fix it to the structural column in the same way;

[0020] Step 10, tensioning and anchoring the prestressed tendons of the ALC plate;

[0021] Step 11: Sealing the seams and tops of the ALC panels;

[0022] Step 12: ALC board compaction grouting;

[0023] Step 13, maintenance.

[0024] In a further technical solution, the autoclaved aerated fiber crack-resistant concrete ALC board is provided with a tongue-and-groove groove, and a semicircular grouting hole is provided in the middle of the width direction of the board, and prestressed tendon channels are provided every 600mm to 1000mm in the transverse direction.

[0025] In a further technical solution, prestressed tendons are installed in the prestressed tendon channels for transverse tightening of the ALC panels during assembly, thereby ensuring that the entire ALC panel maintains the overall stability of the wall.

[0026] In a further technical solution, in step 10, anchor plates are installed on both sides of the prestressed tendons, and through holes are opened on the anchor plates for the prestressed tendons to pass through. Anchors are installed on one side of the anchor plate for fixation, and prestressed tensioning equipment is installed on the other side of the anchor plate and installed on the corresponding anchor plate with a clamp.

[0027] In a further technical solution, a second grouting hole is opened on an anchor plate on one side of the prestressed tensioning equipment, and in step 12, it is used to perform pressure grouting on the reserved channel after the prestressed tensioning anchoring is completed.

[0028] In a further technical solution, the top of the ALC board is a frame beam, and a hardwood wedge is installed on the top, suitable for wedging and fixing.

[0029] Beneficial effects

[0030] (1) The introduction of prestressed tensioning technology makes the joints between autoclaved aerated fiber crack-resistant concrete ALC panels tighter, and the integrity of the enclosure wall is better and the seismic performance is higher; (2) The introduction of pressure grouting technology can perform secondary pressure filling on the joints between the panels, so that the fullness of the adhesive is effectively supplemented, avoiding the failure of the wall insulation performance caused by the gap between the panels; (3) Through the pressure grouting technology, the top seal between the panel and the frame beam is filled with secondary pressure, which can ensure good bonding between the enclosure wall and the frame structure, and can also fill the top seal densely, avoiding the thermal insulation performance of the top of the enclosure wall due to air cavity failing to meet the energy-saving wall system provisions of the relevant specifications. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, for ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0032] Figure 1 The autoclaved aerated fiber crack-resistant concrete ALC board of the present invention;

[0033] Figure 2 This is a side elevation view of the autoclaved aerated fiber crack-resistant concrete ALC board of the present invention;

[0034] Figure 3 This is a large sample drawing of the autoclaved aerated fiber crack-resistant concrete ALC board of the present invention;

[0035] Figure 4 This is a construction elevation diagram of the connection of the autoclaved aerated fiber crack-resistant concrete ALC board of the present invention;

[0036] Figure 5 This is a cross-sectional view of the connection construction of the autoclaved aerated fiber crack-resistant concrete ALC board of the present invention;

[0037] Figure 6 Schematic diagram of anchoring of anchor plates at both ends of prestressed tendons of the present invention

[0038] In the figure: 1. Tongue-and-groove groove; 2. Grouting hole one; 3. Prestressed tendon channel; 4. Prestressed tendon; 5. Hardwood wedge; 6. Anchor plate; 7. Anchor; 8. Clamp; 9. Prestressed tensioning equipment; 10. Grouting hole two; 11. ALC board. DETAILED DESCRIPTION

[0039] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0040] The application principle of the present invention will be further described below with reference to the accompanying drawings and specific embodiments.

[0041] Example 1

[0042] See also Figure 1-6 As shown in the figure, an embodiment of the present invention provides a method for connecting and constructing autoclaved aerated fiber crack-resistant concrete ALC panels. Figure 1 The ALC panel is a single piece of autoclaved aerated fiber crack-resistant concrete (ALC) slab 11, 600mm wide and 200mm or 250mm thick. The length can be customized based on design requirements. The panel features a tongue-and-groove groove 1 for easy splicing and installation. Semicircular grouting holes 2 are located in the middle of the width, and prestressed tendon channels 3 are located at intervals of 600mm to 1000mm across the lateral surface to facilitate the insertion of prestressed tendons 4 and pressure grouting during on-site installation.

[0043] Attachment Figure 3 In the figure, a tongue-and-groove groove 1 is reserved on the side of a single piece of autoclaved aerated fiber anti-cracking concrete ALC board, which is used for the tongue-and-groove connection between the ALC boards 11; a grouting hole 2 is reserved on the side of the autoclaved aerated fiber anti-cracking concrete ALC board, which is used for pressure grouting after the installation of the ALC board 11 is completed, and plays a secondary grouting operation on the adhesive between the boards; a prestressed tendon channel 3 is reserved on the side of the autoclaved aerated fiber anti-cracking concrete ALC board, which is used for pressure grouting of the channel after tightening; the prestressed tendon 4 is used for transverse tightening of the ALC board 11 when assembling, to ensure that the entire ALC board 11 maintains the overall stability of the wall.

[0044] Attachment Figure 6 The size of the hardwood wedge 5 can be adjusted according to the gap between the autoclaved aerated fiber crack-resistant concrete ALC board 11 and the upper structure beam. Its main function is to wedge and fix the ALC board 11 with the frame beam in the initial installation stage.

[0045] Attachment Figure 6 The middle anchor plate 6 is used to expand the force-bearing area of ​​the anchor to avoid stress concentration caused by the prestressing of the ALC plate 11, which may cause damage to the ALC plate 11; the anchor 7 and the clamp 8 are used to anchor the prestressed tendons 4 to prevent the prestressed tendons 4 from falling off due to tensioning; a check valve can be installed outside the second grouting hole to perform pressure grouting on the reserved channel after the prestressing anchoring is completed.

[0046] The construction process of the present invention includes: standardized production and curing of autoclaved aerated fiber crack-resistant concrete ALC panels → transporting and positioning the ALC panels → arranging the ALC panels and applying grout to the bottom → applying a special adhesive to the sides of the ALC panels → threading and anchoring the prestressed tendons of the first ALC panel → wedging and securing the top of the ALC panels → transporting and positioning the adjacent ALC panels and applying grout to the bottom → threading and anchoring the prestressed tendons of the ALC panels → applying a special adhesive to the sides of the adjacent ALC panels → installing and securing the ALC panels and wedging and securing the tops → and similarly attaching and securing the panels to the structural column → tensioning and anchoring the prestressed tendons of the ALC panels → sealing the ALC panel seams and top ends → compaction grouting of the ALC panels → curing. The construction of the autoclaved aerated fiber crack-resistant concrete ALC panels on the other side of the structural column follows the same process as above.

[0047] The advantages of the present invention are as follows: ① The introduction of prestressed tensioning technology makes the joints between the autoclaved aerated fiber crack-resistant concrete ALC panels tighter, and the integrity of the enclosure structure wall is better and the seismic performance is higher; ② The introduction of pressure grouting technology can perform secondary pressure filling on the joints between the panels, so that the fullness of the adhesive is effectively supplemented, avoiding the failure of the wall insulation performance caused by the gaps between the panels; ③ Through the pressure grouting technology, the top seal between the panel and the frame beam is subjected to secondary pressure filling, which can ensure good bonding between the enclosure structure wall and the frame structure, and can also fill the top seal densely, avoiding the thermal insulation performance of the top of the enclosure structure wall due to air cavities failing to meet the energy-saving wall institutional provisions of relevant specifications.

[0048] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above and that the invention can be embodied in other specific forms without departing from the spirit or essential characteristics of the invention. Therefore, the embodiments should be considered in all respects as illustrative and non-restrictive, and the scope of the invention is defined by the appended claims rather than the foregoing description, and it is intended that all variations that come within the meaning and range of equivalents of the claims be embraced therein.

[0049] In addition, it should be understood that although this specification is described in terms of implementation methods, not every implementation method contains only one independent technical solution. This narrative method of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other implementation methods that can be understood by those skilled in the art.

Claims

1. A method for connecting and constructing autoclaved aerated fiber crack-resistant concrete ALC panels, characterized in that: The following methods are included: Step 1, the autoclaved aerated fiber crack-resistant concrete ALC board (11) is produced and maintained in a standardized manner; Step 2, transporting the ALC board (11) to its place; Step 3, pre-layout the ALC board (11) and apply slurry to the bottom; Step 4, applying a special adhesive to the side of the ALC board (11); Step 5, threading and anchoring the prestressed tendons (4) of the first ALC board (11); fixing the top of the ALC board (11) by installing a hardwood wedge (5); Step 6, adjacent ALC boards (11) are transported to their locations and slurry is applied to the bottom; Step 7, threading the ALC plate (11) with the prestressed tendons (4); Step 8, applying a special adhesive to the sides of adjacent ALC plates (11); installing and fixing the ALC plates (11) and wedging and fixing the top; Step 9, install and fix to the structural column in the same way; Step 10, tensioning and anchoring the prestressed tendons (4) of the ALC plate (11); Step 11, sealing the plate seams and top ends of the ALC plate (11); Step 12, compaction grouting of the ALC board (11); Step 13, maintenance.

2. The method for connecting and constructing autoclaved aerated fiber crack-resistant concrete ALC panels according to claim 1, characterized in that: The autoclaved aerated fiber crack-resistant concrete ALC board (11) is provided with a tongue-and-groove groove (1), and a semicircular grouting hole (2) is provided in the middle of the board along the width direction, and prestressed tendon channels (3) are provided at intervals of 600 mm to 1000 mm in the transverse direction.

3. A method for connecting and constructing autoclaved aerated fiber crack-resistant concrete ALC panels according to claim 2, characterized in that: Prestressed tendon holes (3) are provided with prestressed tendon (4) for transversely fastening the ALC panels (11) during assembly, thereby ensuring that the entire ALC panels (11) maintain the overall stability of the wall.

4. The method for connecting and constructing autoclaved aerated fiber crack-resistant concrete ALC panels according to claim 2, characterized in that: In step 10, anchor plates (6) are installed on both sides of the prestressed tendons (4), and through holes are opened on the anchor plates (6) for the prestressed tendons (4) to pass through. An anchor (7) is installed on one side of the anchor plate (6) to fix it. A prestressed tensioning device (9) is installed on the other side of the anchor plate (6) and is installed on the corresponding anchor plate (6) with a clamp (8).

5. The method for connecting and constructing autoclaved aerated fiber crack-resistant concrete ALC panels according to claim 4, characterized in that: A grouting hole 2 (10) is provided on an anchor plate (6) at one side of the prestressed tensioning device (9), and is used for pressure grouting of the reserved channel after the prestressed tensioning anchoring is completed in step 12.

6. The method for connecting and constructing autoclaved aerated fiber crack-resistant concrete ALC panels according to claim 4, characterized in that: The top of the ALC board (11) is a frame beam, and a hardwood wedge (5) is installed on the top, suitable for wedging and fixing.

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