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Preparation method of aerated concrete block

A technology of aerated concrete and blocks, which is applied in the manufacture of tools, ceramic products, applications, etc., can solve the problems of no multi-layer void structure, reduced load-bearing and compressive capacity, poor thermal insulation performance, etc., and reach the curing temperature Effects of reduction, mechanical strength enhancement, and binding force enhancement

Inactive Publication Date: 2020-04-24
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0008] The technical problem mainly solved by the present invention is that the ordinary aerated concrete block has a hollow structure and does not have a multi-layer void structure, which leads to poor thermal insulation performance, and its strength is lower than that of ordinary concrete solid bricks, resulting in its load-bearing resistance. The defect of reducing the compressive capacity provides a method for preparing air-entrained concrete blocks

Method used

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  • Preparation method of aerated concrete block

Examples

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example 1

[0029]Take calcium carbide and put it in a ball mill for ball milling to obtain calcium carbide particles with a particle size of 0.5 mm. Put 80 mL of semi-dry oil in a beaker, heat up to 200 ° C, add calcium carbide particles into the beaker, and stir for 20 minutes to obtain surface-modified Calcium carbide particles are then placed in a grinder and ground for 3 hours, and passed through a 100-mesh sieve to obtain modified calcium carbide powder. The semi-dry oil is a composition of one or more of soybean oil, bran oil, sunflower oil, and corn oil; Wash the laterite with water, filter the sand and gravel with ordinary wire mesh to obtain a laterite suspension, then filter the laterite suspension with a suction filter, heat the obtained red clay to 100°C, dry for 3 hours, and then place it in a grinder Grinding through a 100-mesh sieve to obtain refined laterite materials; in parts by weight, 30 parts of iron tailings, 40 parts of ordinary Portland cement, 10 parts of gypsum, ...

example 2

[0031] Take calcium carbide and put it in a ball mill for ball milling to obtain calcium carbide particles with a particle size of 0.8 mm. Put 85 mL of semi-dry oil in a beaker, heat up to 210 ° C, add calcium carbide particles into the beaker, and stir for 23 minutes to obtain surface-modified Calcium carbide particles are then placed in a grinder and ground for 3 hours, and passed through a 100-mesh sieve to obtain modified calcium carbide powder. The semi-dry oil is a composition of one or more of soybean oil, bran oil, sunflower oil, and corn oil; Wash the laterite with water, filter the sand and gravel with ordinary wire mesh, and obtain the laterite suspension, then filter the laterite suspension with a suction filter, heat the obtained red clay to 105°C, dry it for 4 hours, and then place it in a grinder Grinding through a 100-mesh sieve to obtain a refined laterite material; in parts by weight, 40 parts of iron tailings, 43 parts of ordinary Portland cement, 13 parts of...

example 3

[0033] Take calcium carbide and put it in a ball mill for ball milling to obtain calcium carbide particles with a particle size of 1.0 mm. Put 90 mL of semi-dry oil in a beaker, heat up to 220°C, add calcium carbide particles into the beaker, and stir for 25 minutes to obtain surface-modified calcium carbide The particles are then placed in a grinder and ground for 4 hours, and passed through a 100-mesh sieve to obtain modified calcium carbide powder. The semi-dry oil is a composition of one or more of soybean oil, bran oil, sunflower oil, and corn oil; Wash with water, filter out sand and gravel with ordinary wire mesh to obtain a laterite suspension, then filter the laterite suspension with a suction filter, heat the obtained red clay to 110°C, dry for 4 hours, and then place it in a grinder Grind and pass through a 100-mesh sieve to obtain a refined laterite material; in parts by weight, 50 parts of iron tailings, 45 parts of ordinary Portland cement, 15 parts of gypsum, 30 ...

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Abstract

The invention discloses a preparation method of an aerated concrete block, which belongs to the technical field of preparation of building materials. According to the invention, calcium carbide subjected to semi-dry oil surface modification is used as an air entraining agent; and a plurality of effective components are used as air inlet components. The porous rock wool fibers are coupled with themodified calcium carbide powder; the fiber strength is improved, the red mud contains aluminum oxide, calcium oxide and other metal oxides; the aluminum oxide exists in the red mud in the form of crystalline fibers; after pressing and sintering, the crystalline fibers are longitudinally oriented in the aerated concrete block and are crossed and wound with the porous rock cotton fibers in the aerated concrete block to form a woven mesh, so that the mechanical strength of the aerated concrete block is further enhanced, the heat preservation and insulation performance of the aerated concrete block is improved, and the application prospect is wide.

Description

technical field [0001] The invention discloses a method for preparing an aerated concrete block, which belongs to the technical field of building material preparation. Background technique [0002] Air-entrained concrete block is a new type of building material that is lightweight, porous, thermal insulation, good fire resistance, nailable, sawable, planable, and has certain earthquake resistance. As early as the early 1930s, China began to produce this product and it was widely used. [0003] The aerated concrete block is a solid block made of cement, slag, sand, lime, etc., added with an air-generating agent, stirred and formed, and autoclaved. According to the application, the aerated concrete can be divided into non-load-bearing blocks , load-bearing blocks, insulation blocks, wall panels and roof panels five. [0004] Air-entrained concrete blocks have light bulk density, heat preservation, heat insulation, sound insulation, and are easy to process. They are made of v...

Claims

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Application Information

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IPC IPC(8): C04B28/14C04B38/02C04B38/08C04B38/10C04B20/02B28B1/52B28B1/50C04B111/40
CPCB28B1/50B28B1/52C04B20/023C04B20/026C04B28/14C04B38/02C04B38/08C04B38/10C04B2111/40C04B2201/50C04B18/12C04B7/02C04B14/06C04B7/34C04B14/04C04B14/322C04B14/46C04B24/42
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