Harmless solid waste high-performance concrete

A high-performance concrete and solid waste technology, applied in the field of concrete, can solve the problem of low utilization rate of solid waste, achieve good field application effect, large processing capacity, and improve the effective utilization level

Active Publication Date: 2015-06-10
SHENZHEN WEIHAI BUILDING MATERIAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The technical problem to be solved by the present invention is to provide a high-performance concrete (WHSWH for short) with a strength level of C20-C80 for the low utilization rate of solid waste in the construction industry.

Method used

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  • Harmless solid waste high-performance concrete

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Effect test

Embodiment

[0029] Water: tap water.

[0030] Cement: P·O 42.5 Portland cement.

[0031] Natural coarse aggregate: the maximum particle size is less than 31.5mm continuously graded crushed stone, and its performance indicators meet the requirements of the current standard JGJ52 of "Standards for the Quality and Inspection Methods of Sand and Stone Used in Ordinary Concrete".

[0032] Natural fine aggregate: natural sand or washed sand, which is medium sand in Zone II.

[0033] Harmless solid waste: including construction waste recycled aggregate and industrial derivatives, etc.

[0034] Mineral admixtures: S95 mineral powder, Ⅰ, Ⅱ fly ash, silica fume.

[0035] Water reducer: High-efficiency water reducer is used for concrete below C40 strength grade, and polycarboxylate high-performance water reducer with a water reducing rate greater than 25% and a certain plastic-retaining function is used for C40 strength grade and above concrete.

[0036] The specific preparation ratio of high-per...

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Abstract

The invention provides harmless solid waste high-performance concrete. The strength grade of the concrete is C20-C80 grade; the volume-weight of the harmless solid waste high-performance concrete is 2300-2600kg / m<3>; and the harmless solid waste high-performance concrete comprises the following components in a set ratio: water, cement, natural coarse aggregate, harmless solid waste, natural fine aggregate, 0-5m harmless solid waste, a mineral admixture and a water reducing gent. The harmless solid wastes (recycled aggregate, industrial derivatives and the like) are applied to concrete, so that the effective utilization level of the solid wastes can be improved. The required work performance, strength, requirements, endurance quality and the like of the concrete can be ensured; and the harmless solid waste high-performance concrete can be suitable for concrete structures, reinforced concrete structures and the like, so that the targets of recycling and utilizing of the harmless solid wastes are reached.

Description

technical field [0001] The invention relates to the field of concrete, and more specifically relates to a harmless solid waste high-performance concrete (abbreviated as WHSWH) with a strength level of C20-C80. Background technique [0002] Since the reform and opening up, with the acceleration of my country's urbanization process and the rapid development of the industrial economy, the construction waste and industrial derivatives produced by the construction industry have also increased significantly. Construction waste mainly refers to the waste concrete and other wastes produced by construction units in new construction, reconstruction, expansion and demolition of various buildings. Industrial solid waste refers to solid waste generated in industrial production activities, such as nickel slag, steel slag, fly ash, etc. These solid wastes are like a sharp double-edged sword. Improper treatment will bring huge pollution to the ecological environment, and good use can bring...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B28/00C04B28/04C04B18/16C04B18/30
CPCY02W30/91
Inventor 杨根宏李正茂宋晓明彭孟啟
Owner SHENZHEN WEIHAI BUILDING MATERIAL
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