Composite energy saving building blocks and method for making same

Abstract

The invention relates to a compound energy saving building block and its making method, at present compounded of bearing block, heat-preserving plate, lacing wire, surface layer, and so on. Two ends of the heat-preserving plate are made with inclined anticracking slots, there are air exhaust grooves made on the vertical concave and convex slot, there are cement seam pressure strips on the transverse groove, there are air exhaust holes made on the cement-seam pressure strips, and there are protective films on the lacing wires; and it is made by special techniques of screening antirust low conductive liquor, waterproofing agent and framework material, etc. It has simple and convenient construction, enhances constructing efficiency, has low engineering cost, short working cycle, etc. and it ensures the quality of architectural engineering.

Description

Technical field [0001] The invention relates to the improvement of composite building blocks, and belongs to building components made of different materials in the field of construction engineering. Background technique [0002] At present, composite blocks with dual functions of load-bearing and thermal insulation applied to load-bearing or non-load-bearing exterior walls in industrial and civil buildings are mainly composed of concrete load-bearing blocks, thermal insulation boards, reinforcements, concrete surface layers, etc., such as Chinese Patent No. 96218752.6 "High-efficiency and energy-saving building block", No. 96222698.X "Concrete wall composite thermal insulation hollow block", No. 89204080.7 "A new type of building wall material-universal block" and the inventor's No. 01221975.4" Composite non-load-bearing thermal insulation blocks" etc. However, this type of composite block has been examined in engineering practice and found that there are still the following shor...

AI Technical Summary

Problems solved by technology

[0003] 1. In the existing composite blocks, in order to make the concrete load-bearing block, the concrete surface layer and the insulation board have a good combination, there are dovetail grooves on both sides of the insulation board. In order to ensure that the effective thickness of the insulation board is consistent, this dovetail The slots are all misplaced and correspondingly opened, so that the dovetail slots cannot be opened to the end of the insulation board, and there must be a plane without dovetail slots at the end of the insulation board, which causes the end of the block concrete surface to be in contact with the insulation board. The bonding force between the plates is reduced, so it is easy to crack at the end of the concrete surface

After the exterior wall is plastered, rainwater will easily enter the wall blocks from the cracks, causing quality problems such as cracks on the exterior wall

[0004] 2. There is no gap after the end faces of the existing composite blocks are joined. The mortar cannot enter the block during masonry, and the surface layer is dry. After the masonry is plastered, the wall is prone to cracks, which affects the quality of the wall.

This kind of metal tie bar is very easy to oxidize, rust and corrode in the air-permeable and damp concrete wall, which greatly affects the bonding force between the load-bearing block, the insulation board and the surface layer in the block, and in severe cases, the surface layer may be damaged. Falling off and other consequences; and the thermal conductivity of metal ties is large, which affects the thermal insulation effect of the wall

At the same time, the knotting ability of the existing pin-type lacing bars and I-shaped lacing bars is also insufficient

[0007] 5. Composite blocks can be made into load-bearing blocks and non-load-bearing blocks, especially when making non-load-bearing blocks, light aggregates such as slag, fly ash, perlite powder, pumice, etc. are used in the concrete. These materials have a high water absorption rate; in addition to the low compressive strength of the blocks themselves, if the aggregate particles are not strictly controlled, there will be a phenomenon that the concrete filling in the dovetail grooves on both sides of the insulation layer is not full, resulting in a decrease in the bonding force of the blocks. When wet rainwater is immersed, it is very easy to cause the concrete powder to loosen and the surface layer of the block to fall off, etc.

[0008] These deficiencies all bring hidden dangers to building construction, affect the life and quality of use of buildings, and seriously limit the popularization and application of such products.

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