An aerated concrete block

Abstract

The utility model relates to an aerated concrete block, including block main part and the mortar joint height -limiting piece that protrudes at the bottom of block main part, the mortar joint height -limiting piece includes the first lug and the second lug of being located at the both sides of block main part bottom surface, the first lug and the second lug are high, and the first lug and the second lug are relative to the center of block main part's bottom surface center symmetry setting. The first lug and the second lug are integrally formed with block main part in the forming stage, do not need additional artificial leveling or use other instruments to control the mortar joint thickness, can directly carry out the masonry, has simplified the construction procedure, reduced the mortar use amount, also reduced the manual operation error, the overall construction efficiency is about 20%~30% higher than the traditional mode.

Description

Technical Field

[0001] This utility model relates to the field of building technology, and in particular to an aerated concrete block. Background Technology

[0002] Autoclaved aerated concrete (AAC) blocks are a type of lightweight, porous building wall material made primarily from siliceous materials (such as sand and fly ash) and calcareous materials (such as lime and cement) through processes including batching, mixing, pouring, aeration, static curing, cutting, and autoclaving. They offer advantages such as light weight, good thermal insulation, excellent sound insulation, and ease of construction, and have been widely used in the construction of non-load-bearing walls in industrial and civil buildings.

[0003] In traditional masonry construction, workers typically create mortar joints between blocks to adjust the overall levelness of the wall and ensure the bonding strength of the blocks. However, existing aerated concrete blocks present a challenge in controlling the thickness of these mortar joints during actual construction. Due to their planar bottom structure, the blocks are prone to localized settlement or tilting during installation due to uneven mortar stress, resulting in inconsistent mortar joint thicknesses that affect the overall flatness and mechanical properties of the masonry. Furthermore, excessively thick mortar joints increase mortar consumption, reduce construction efficiency, and lead to material waste.

[0004] Furthermore, on-site construction is greatly affected by the skill level of the workers, and the thickness of the mortar joints is often difficult to maintain within the design requirement of about 1 cm, which in turn affects the compressive strength and thermal insulation performance of the masonry. Although existing technologies can use manual shims or laser leveling to help control the height of the mortar joints, these methods are cumbersome, costly, and difficult to maintain stable accuracy in large-area masonry construction.

[0005] Therefore, there is an urgent need for a structurally improved aerated concrete block that can automatically control the thickness of the mortar joints during construction, thereby improving the flatness of the wall and construction efficiency without increasing the number of construction steps. Utility Model Content

[0006] The purpose of this utility model is to provide an aerated concrete block that can solve the problem of reduced installation efficiency when adjusting mortar joints during the installation of aerated concrete blocks.

[0007] This utility model is achieved through the following technical solution:

[0008] An aerated concrete block includes a block body and a mortar joint height limiting block protruding from the bottom of the block body; the mortar joint height limiting block includes a first protrusion and a second protrusion disposed on both sides of the bottom surface of the block body, the first protrusion and the second protrusion are of equal height, and the first protrusion and the second protrusion are centrally symmetrically arranged with respect to the center of the bottom surface of the block body.

[0009] Compared with previous technologies, the beneficial effects of this utility model are as follows:

[0010] 1. The first and second protrusions are integrally formed with the main block, eliminating the need for additional manual leveling or the use of other equipment to control the mortar joint thickness. The main block can be directly pressed and laid, ensuring that the first and second protrusions have a uniform mortar thickness at the bottom, forming a standard mortar joint. This simplifies the construction process, reduces the amount of mortar used, and also reduces human error. Overall construction efficiency is increased by about 20% to 30% compared to traditional methods.

[0011] 2. This utility model can automatically limit and unify the mortar joint thickness during the masonry process, so that the thickness of the mortar joint is limited to the height of the first and second protrusions, effectively avoiding the wall undulation or tilting problem caused by uneven mortar thickness in traditional masonry, and significantly improving the flatness and construction accuracy of the masonry.

[0012] 3. The flow channel formed by the staggered arrangement of the first and second protrusions can guide the discharge of mortar, thereby reducing the construction operations of workers and further improving construction efficiency.

[0013] 4. The aerated concrete blocks, the first protrusion, and the second protrusion are manufactured using an integrated molding process, eliminating the need for subsequent bonding or assembly. This results in a tight structural bond, avoiding the problems of easy detachment or uneven strength associated with separate blocks. This integrated structure not only maintains the overall load-bearing capacity and dimensional stability of the blocks but also ensures that the blocks maintain their shape and function under long-term load and humidity changes, extending the service life of the masonry. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the bottom structure of this utility model;

[0015] Figure 2 This is a schematic diagram of the top structure of this utility model;

[0016] Figure 3 This is a schematic diagram of the structure of the protrusion of this utility model;

[0017] Figure 4 This is a rendering of the mold used to form this utility model.

[0018] Labeling explanation: 1 Block body, 11 First protrusion, 111 First protruding rib, 112 Second protruding rib, 12 Second protrusion, 121 Third protruding rib, 122 Fourth protruding rib, 2 Molding mold, 21 First groove, 22 Second groove. Detailed Implementation

[0019] The present invention will now be described in detail with reference to the accompanying drawings, but the scope of protection of the present invention is not limited to the following description:

[0020] like Figures 1-3As shown, an aerated concrete block includes a block body 1 and a mortar joint height limiting block protruding from the bottom of the block body 1; the mortar joint height limiting block includes a first protrusion 11 and a second protrusion 12 disposed on both sides of the bottom surface of the block body 1, the first protrusion 11 and the second protrusion 12 are of equal height, and the first protrusion 11 and the second protrusion 12 are centrally symmetrically arranged with respect to the center of the bottom surface of the block body 1.

[0021] The first and second protrusions are integrally formed with the main block, eliminating the need for additional manual leveling or other equipment to control the mortar joint thickness. This allows for direct masonry work, simplifies the construction process, reduces mortar usage, and minimizes human error. Overall construction efficiency is increased by approximately 20% to 30% compared to traditional methods. This invention automatically limits and standardizes the mortar joint thickness during construction, ensuring the thickness is limited to the height of the first and second protrusions. This effectively avoids wall undulations or tilting caused by uneven mortar thickness in traditional masonry, significantly improving the flatness and construction accuracy of the masonry.

[0022] When using it, after brushing mortar on the base or a layer of aerated concrete blocks, stack the aerated concrete blocks of this utility model one by one, so that the first protrusion 11 and the second protrusion at the bottom of each aerated concrete block touch the bottom to squeeze out the excess mortar, and then scrape off the excess mortar.

[0023] Furthermore, the first protrusion 11 includes a first protruding rib 111 arranged laterally and a second protruding rib 112 arranged longitudinally; the center of the first protruding rib 111 and the center of the second protruding rib 112 are intersected to form a cross-shaped structure of the first protrusion 11.

[0024] The second protrusion 12 includes a third protruding rib 121 arranged laterally and a fourth protruding rib 122 arranged longitudinally; the center of the third protruding rib 121 and the center of the fourth protruding rib 122 are intersected to form a cross-shaped structure of the second protrusion 12; the first protrusion 11 and the second protrusion 12 are offset relative to the centerline of the bottom surface of the block body 1, and the lateral offset distance between them is less than the length of the first protruding rib 111, and the longitudinal offset distance between them is less than the length of the second protruding rib 112; so that the first protrusion 11 and the second protrusion 12 are spaced apart and enclosed to form a guide channel 13 with two guide ports, which is used to guide excess mortar to flow out from both sides of the block body 1.

[0025] The flow channel formed by the staggered arrangement of the first and second protrusions can guide the discharge of mortar, thereby reducing the construction work of workers and further improving construction efficiency.

[0026] Furthermore, both the first protrusion 11 and the second protrusion 12 are made of concrete.

[0027] Since aerated concrete itself has limited strength, the second protrusion 12 is made of concrete, which can improve the overall strength, ensure the stability of the masonry process, and further improve the masonry efficiency.

[0028] Furthermore, the heights of the first protrusion 11 and the second protrusion 12 can be set as needed.

[0029] The following explanation will take the example of the first protrusion 11 and the second protrusion 12 at the bottom of the formed block body 1 protruding 2-3mm:

[0030] like Figure 4 The figure shown is an effect diagram of the molding mold 2 of this utility model. The molding mold 2 has a rectangular box structure, and its interior is provided with a first groove 21 and a second groove 22 for forming the first protrusion 11 and the second protrusion 12. The first groove 21 and the second groove 22 have a cross-shaped groove structure, and the depth of the first groove 21 and the second groove 22 relative to the molding mold 2 is 2-3mm.

[0031] The first groove 21 and the second groove 22 are used to place the formed first protrusion 11 and second protrusion 12. The depth of both the first groove 21 and the second groove 22 is 2-3 mm, while their width is slightly larger than that of the first protrusion 11 and the second protrusion 12. This ensures that when the first protrusion 11 is placed into the first groove 21, there is a gap between the outer periphery of the first protrusion 11 and the first groove 21, facilitating its placement. Similarly, the second protrusion 12 has the same gap when placed into the second groove 22. During subsequent pouring of aerated concrete material, the aerated concrete material can wrap around the portions of the first protrusion 11 and the second protrusion 12 that are not embedded in the first groove 21 and the second groove 22 within the molding mold 2, ultimately causing the first protrusion 11 and the second protrusion 12 to protrude 2-3 mm from the bottom of the block body 1.

[0032] In summary, the construction process of this utility model is as follows:

[0033] ① Use high-strength fine stone concrete or mortar to prefabricate the first protrusion 11 and the second protrusion 12 separately. Their shape is cross-shaped, and the height of the first protrusion 11 and the second protrusion 12 is 4-6mm.

[0034] ② Prepare the raw materials for aerated concrete. Weigh out the siliceous materials (such as fly ash, quartz sand, etc.), calcareous materials (such as lime, cement), foaming agent (aluminum powder or aluminum paste), regulator and appropriate amount of water according to the proportion. Ensure that the particle size and moisture content of the raw materials meet the standards to ensure the uniformity of the pores and the structural strength of the blocks.

[0035] ③ Slurry preparation: Add siliceous materials, calcareous materials, regulators, and water to a mixer and mix into a uniform slurry. Just before pouring, add a gas-generating agent (aluminum powder or aluminum paste) and stir rapidly (about 15-30 seconds), then immediately pour the slurry into molding mold 2.

[0036] ④ Mold preparation and arrangement, using methods such as Figure 4 The molding mold 2 shown has a first groove 21 and a second groove 22 with a cross-shaped groove structure at the bottom (the depth of the first groove 21 and the second groove 22 is 2-3mm). Before casting, the inner wall of the molding mold 2 is cleaned and the first protrusion 11 and the second protrusion 12 are respectively placed into the first groove 21 and the second groove 22.

[0037] ⑤ Pouring and Gas Expansion: Pour the slurry prepared in step ③ into the molding mold 2, allowing it to flow naturally and fill the gap between the first groove 21 and the first protrusion 11, as well as the gap between the second groove 22 and the second protrusion 12; wait for the slurry to undergo a gas-generating reaction in the mold cavity and gradually expand, filling the upper space of the molding mold 2; the blank formed in this stage will include the first protrusion 11 and the second protrusion 12 forming as shown in the figure. Figure 1 The aerated concrete blocks shown;

[0038] ⑥ Static rest and initial setting: After casting, the molding mold 2 is left to stand for several hours to allow the green body to complete the initial setting at natural temperature; during the static rest process, the air bubbles inside the molding mold 2 are stably distributed and the strength of the green body reaches the state where it can be demolded.

[0039] ⑦ Demolding and autoclaving: After the green body has solidified, it is demolded and placed in an autoclave for autoclaving at approximately 180°C and 1.2 MPa. This process allows calcium silicate crystals to fully form, improving the compressive strength and durability of the blocks.

[0040] ⑧ Cooling, inspection and delivery: After autoclaving, the blocks are naturally cooled. The appearance, dimensional deviation, compressive strength and integrity of the blocks are inspected. After passing the inspection, they are stacked or packaged for delivery.

[0041] Although this utility model has been illustrated and described using specific embodiments and alternative methods, it should be understood that various changes and modifications are permitted as long as they do not depart from the spirit and scope of this utility model. Therefore, it should be understood that this utility model is not limited in any sense except by the appended claims and their equivalents.

Claims

1. An aerated concrete block, characterized in that: It includes a block body (1) and a mortar joint height limiting block protruding from the bottom of the block body (1); the mortar joint height limiting block includes a first protrusion (11) and a second protrusion (12) located on both sides of the bottom surface of the block body (1), the first protrusion (11) and the second protrusion (12) are of equal height, and the first protrusion (11) and the second protrusion (12) are centrally symmetrically arranged with respect to the center of the bottom surface of the block body (1).

2. The aerated concrete block according to claim 1, characterized in that: The first protrusion (11) includes a first protruding rib (111) arranged laterally and a second protruding rib (112) arranged longitudinally; the center of the first protruding rib (111) and the center of the second protruding rib (112) are intersected to form a cross-shaped structure of the first protrusion (11). The second protrusion (12) includes a third protrusion (121) arranged laterally and a fourth protrusion (122) arranged longitudinally; the center of the third protrusion (121) and the center of the fourth protrusion (122) are intersected to form a cross-shaped structure of the second protrusion (12).

3. An aerated concrete block according to claim 2, characterized in that: The first protrusion (11) and the second protrusion (12) are offset relative to the bottom surface of the block body (1), and the lateral offset distance between them is less than the length of the first protruding rib (111), and the longitudinal offset distance between them is less than the length of the second protruding rib (112); so that the first protrusion (11) and the second protrusion (12) are spaced apart and enclosed to form a guide channel (13) with two guide ports, which is used to guide excess mortar to flow out from both sides of the block body (1).

4. An aerated concrete block according to claim 1, characterized in that: The first protrusion (11) and the second protrusion (12) are made of concrete.

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