Gas-added self heat-insulation composite weight-bearing build brick of concrete

A concrete and self-insulation technology, applied in climate change adaptation, building materials and other directions, can solve the problems of difficult to guarantee the quality of wall construction, high cost of wall construction, difficult to guarantee the service life of organic thermal insulation materials, etc. The effect of low comprehensive cost and high cost performance

Inactive Publication Date: 2007-06-13
TONGJI UNIV
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  • Application Information

AI Technical Summary

Problems solved by technology

Due to the need for multiple complex on-site operations, it is difficult to guarantee the quality of the wall construction, and the cost of the wall using this method is relatively high
Since the insulation material is made of organic materials and is often on the outside of the wall, it is difficult to guarantee that the organic insulation material can achieve the same service life as the load-bearing wall
[0005] So far, there is still no product with excellent performance that can completely replace the commonly used clay bricks

Method used

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  • Gas-added self heat-insulation composite weight-bearing build brick of concrete

Examples

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Embodiment 1

[0014] Example 1: In order to verify that the composite block has sufficient compressive bearing capacity, the test selects the compressive strength grade A3.5, the bulk density B06 quartz sand aerated block, and divides the size according to the outer dimension of the solid composite block in Figure 1 The commercial aerated concrete blocks with relatively large specifications are cut and shaped, and the aerated blocks are drilled with a low-speed electric drill, and then the holes are dug out by hand sawing according to the size of the concrete solid core block. Using crushed stone with a maximum particle size of 10mm as coarse aggregate, fine stone concrete (volume ratio: stone:sand:cement:water=1:1:1:0.75) was poured into the hole, after 40 days of natural curing, finally The surface of the test block is ground to obtain a finished self-insulating composite load-bearing block. The compression test has proved that the compressive strength of this block can reach 14MPa. This ...

Embodiment 2

[0015] Example 2: In order to produce concrete aerated self-insulating composite load-bearing blocks on a large scale in the factory, ordinary concrete block forming machines can be used to produce the concrete core inside the composite block according to the selected concrete mix ratio and core block size After 3 days of natural curing, the core blocks can be loaded into special molds and positioned. At the same time, the air-entrained concrete dry material is configured according to the ratio of 425# Portland cement 9%, quicklime 29%, sand 59%, dihydrate gypsum 2%, aluminum powder 8‰, triethanolamine 2‰, and then water and dry material 1 : 0.65 ratio to configure the air-entrained concrete slurry, stir the slurry and pour the pasty slurry into the space outside the concrete core block in the mold. Stop for about 5 hours and wait for the aerated concrete slurry to solidify, then use a wire cutter to trim the surface of the block, and then send the block with mold into the aut...

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Abstract

The invention discloses concrete air entraining self heat preservation compound bearing building block compounded by concrete and air entraining concrete. It includes concrete core block and external insulating layer. The former is set in the building block as bearing material. The air entraining concrete is set at the periphery of the core block as the external insulating layer. The two inorganic materials are made into the building block with of the functions of self heat preservation and bearing which can replace the common clay brick and has the advantages of saving limit land resource, greatly improving wall body useful life, simple processing, convenient construction, compressive strength that over 10MPa.

Description

technical field [0001] The invention relates to building blocks for building walls, in particular to a concrete aerated self-insulating composite load-bearing block. Background technique [0002] With the continuous development of my country's construction industry, people's requirements for the environmental protection of building materials are getting higher and higher. As of June 30, 2003, 160 cities in my country have banned the use of solid clay bricks for a limited time. They were originally used in large quantities in walls. The traditional clay bricks can no longer meet the requirements of "energy saving and soil saving", and new wall materials such as concrete porous bricks, gypsum blocks and aerated concrete blocks are constantly emerging. Due to the advantages of high strength, light weight, land saving, energy saving, and waste utilization, concrete small hollow blocks are gradually becoming the dominant wall material to replace solid clay bricks. However, with t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E04C1/41
CPCY02A30/244
Inventor 李翔顾祥林张伟平
Owner TONGJI UNIV
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