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Aeroconcrete and preparation method thereof

A technology of air-entraining concrete and air-generating agent, which is applied in the field of wall materials and concrete, can solve the problems of polluting the environment and destroying human landscapes, and achieves the effects of wide range of materials, broad application prospects, significant economic and social significance.

Inactive Publication Date: 2009-10-14
李秋义
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In addition to the need to pay a large amount of land acquisition fees and transportation costs, it will also pollute the environment and destroy the cultural landscape

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] The following is illustrated by taking the production of the aerated concrete block of the present invention as an example. The aerated concrete adopts the following formula, and the components and their mass percentages are as follows:

[0029] 1) Calcareous materials: including 25% of high-sulfur petroleum coke ash and 10% of cement, specifically ground furnace bottom slag and ordinary Portland cement;

[0030] 2) Silicon material: 64.92%, specifically low-silicon gold tailings, SiO 2 Content 39%;

[0031] 3) Air-generating agent: 0.08%, specifically aluminum powder for aerated concrete;

[0032] The specific preparation method of air-entrained concrete is as follows:

[0033] (1) Grinding the high-sulfur petroleum coke ash and the low-silicon gold tailing sand with a ball mill to a 200-mesh sieve of less than or equal to 5%;

[0034] (2) Weigh high-sulfur petroleum coke ash, cement, low-silicon gold tailings and aluminum powder according to the mass mix ratio list...

Embodiment 2

[0054] Adopt following air-entrained concrete formula of the present invention, each component and its mass percentage content are as follows:

[0055] 1) Calcareous materials: including 30% of high-sulfur petroleum coke ash and 10% of cement, wherein the high-sulfur petroleum coke ash includes ground furnace bottom slag and fly ash with a mass ratio of 1:1, and the cement is ordinary silica salt cement;

[0056] 2) Silicon material: 59.92%, specifically fly ash;

[0057] 3) Air-generating agent: 0.08%, specifically aluminum powder for aerated concrete;

[0058] The steps of preparing the air-entrained concrete of the present invention of the above-mentioned formula and applying it to produce blocks are as follows:

[0059] (1) Weigh high-sulfur petroleum coke ash, fly ash, cement and special aluminum powder for aerated concrete according to the mass ratio listed in the above formula;

[0060] (2) Mix the various raw materials weighed in step (1) except the gas-generating a...

Embodiment 3

[0067] The air-entrained concrete of the present invention adopts the following formula, and each component and its mass percentage content are as follows:

[0068] 1) Calcareous materials: including 30% of high-sulfur petroleum coke ash and 5% of cement, wherein the high-sulfur petroleum coke ash includes ground furnace bottom slag and fly ash with a mass ratio of 2:1, and the cement is ordinary silica salt cement;

[0069] 2) Silica material: 64.9%, which is construction waste powder;

[0070] 3) Gas generating agent: 0.1%, specifically calcium carbide;

[0071] The process of preparing the slurry of the air-entrained concrete of the above formula and applying it to produce blocks is as follows:

[0072] (1) Use a ball mill to grind the bottom slag to a 200-mesh sieve ≤ 5%. Since the powder recovered in the construction waste crushing process contains some larger particles, it also needs to be properly ground to a 200-mesh sieve with a ball mill. 5%, weigh high-sulfur pet...

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Abstract

The invention belongs to the field of building materials and relates to a concrete capable of comprehensively utilizing industrial and constructional waste. The raw material components of the concrete in terms of mass percentage content is as below: calcium materials which include 15-40 percent of high-sulfur petroleum coke clinker and 0-15 percent of cement, 59.95-70 percent of silicon material and 0.05-0.2 percent of foaming agent. The invention provides a new approach for reasonably and cleanly utilizing construction garbage, industrial residuals, high-sulfur petroleum coke clinker and other industrial wastes, breaks through the technical bottleneck of using a low-silicon material to produce aeroconcrete and expands the application scope of aeroconcrete materials. The preparation method is simple; and bricks, building blocks and walling materials of other forms, which are produced through a steam pressure curing process, not only have high strength, but also embody waste utilization, environment protection and resource saving, use raw materials which can be more widely obtained, can absolutely replace the existing walling materials of the same type, and have remarkable economic and social benefit and wide application prospect.

Description

technical field [0001] The invention belongs to the field of building materials and relates to a wall material, in particular to concrete which can comprehensively utilize industrial and construction waste. Background technique [0002] With the improvement of resource and environmental protection awareness, the non-sustainable development of traditional building materials at the cost of massive consumption of resources and serious damage to the ecological environment has become increasingly unable to meet the requirements of society. New green building materials are a new situation and a new concept. development direction of the construction industry. [0003] Petroleum coke is the product of the delayed coking unit of the refinery, which has the characteristics of high calorific value, low ash content, high nitrogen and sulfur content and low volatile matter. According to the different sulfur content, it can be divided into high sulfur coke (sulfur content above 3%) and l...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B28/00B28B1/50B28C5/00B28C7/04B28B11/14B28B11/24C04B14/06C04B18/16C04B18/08C04B18/10C04B18/12C04B18/30C04B22/04C04B22/06C04B22/10
CPCC04B28/36Y02W30/91
Inventor 李秋义
Owner 李秋义
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