Composite blending material for concrete and preparation method thereof

A composite admixture and concrete technology, applied in sustainable waste treatment, solid waste management, climate sustainability, etc., can solve the problem of difficult to adapt to the rapid growth of waste incineration fly ash, limited landfill disposal capacity, and high treatment costs. problems, to achieve the effect of being conducive to industrial production and popularization and application, good social and economic effects, and low cost
CN101397198AInactive Publication Date: 2009-04-01SHANGHAI UNIV +1
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
SHANGHAI UNIV
Publication Date
2009-04-01
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention relates to a composite admixture used in concrete that incineration fly ash of urban living garbage, fly ash, slag powder and natural mineral powder are taken as the main raw materials and a preparation method thereof, and pertains to the technical field of building material preparation technique. The composition and weight percent of the composite admixture in the invention are: incineration fly ash, 10-30%; fly ash, 20-40%; slag powder, 30-50%; and natural mineral powder, 5-15%. The composite admixture of the invention can replace 30-50% of use volume of the cement in concrete; the prepared concrete can not only improve the grade of the grains of the concrete system, but also improve fluidity, cohesiveness and moisture capacity of concrete mixture, and can improve slump constant, anti-sulfate performance and anti-carbonization performance of the concrete; and the durability performance of the concrete can also be improved. The waste such as incineration fly ash, industrial slag, and the like, can be recycled, thus being in favor of environmental protection, and saving cement, sources and energy.
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Description

technical field

[0001] The invention relates to a composite admixture for concrete whose main raw materials are fly ash from municipal solid waste incineration, fly ash, slag powder and natural mineral powder, and belongs to the technical field of building material preparation technology. Background technique

[0002] With the acceleration of urban construction, the demand and consumption of concrete are also increasing, and concrete has become one of the most widely used man-made building materials in contemporary times. And in several kinds of raw materials of concrete, cement is an indispensable part. The use of industrial waste and solid waste to prepare composite admixtures for concrete to replace part of the cement in concrete is the need for solid waste recycling and circular economy, as well as the need for the scientific development of concrete materials.

[0003] Municipal solid waste incineration fly ash and cement are relatively similar in main chemical composit...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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