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C20 self-compaction concrete prepared from recycled aggregate and preparation method thereof

A technology of self-compacting concrete and recycled aggregate, applied in the field of building materials, can solve the problems of large resource consumption and high cost, and achieve the effects of cost reduction, easy construction, and environmental protection in the preparation process

Inactive Publication Date: 2013-06-05
XINAO ECOLOGICAL CONSTR MATERIALS
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  • Summary
  • Abstract
  • Description
  • Claims
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Problems solved by technology

[0003] The purpose of the present invention is to provide a C20 self-compacting concrete prepared with recycled aggregates, aiming at solving the problems of large resource consumption and high cost of the existing C20 self-compacting concrete

Method used

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Embodiment Construction

[0019] In order to make the object, technical solution and advantages of the present invention more clear, the present invention will be further described in detail below in conjunction with the examples. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0020] The C20 self-compacting concrete provided by the invention is prepared by using cement, recycled sand, recycled aggregate, fly ash, ground mineral powder, admixture, and water as raw materials, and the weight ratio of these raw materials is 1 in sequence. :(3.97-4.49):(4.46-4.83):0.95:0.44:0.015:(1.12-1.20), where the water-binder ratio is 0.469-0.502. The regenerated sand is obtained by crushing construction waste and then sieving, with a particle size of ≤5mm, a fineness modulus of 2.8, a fine powder content of 2.5%, a mud content of 0.8%, and an apparent density of 2640Kg / m 3 1. Reclaimed plastic sand with a wate...

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Abstract

The invention is applicable to the field of construction materials, and provides a C20 self-compaction concrete prepared from recycled aggregate and a preparation method thereof. The concrete is prepared from the following raw materials in parts by weight: 1 part of cement, 3.97-4.49 parts of reclaimed sand, 4.46-4.83 parts of recycled aggregate, 0.95 part of fly ash, 0.44 part of ground ore powder, 0.015 part of admixture and 1.12-1.20 parts of water. The water-to-cement ratio is 0.469-0.502. The prepared C20 self-compaction concrete has the advantages of favorable filling property, favorable clearance throughput capacity, high segregation resistance and high stability, and is easy for construction. The cost of concrete is greatly lowered.

Description

technical field [0001] The invention belongs to the field of building materials, in particular to a C20 self-compacting concrete prepared with recycled aggregates and a preparation method thereof. Background technique [0002] Concrete is an indispensable and important engineering material in modern civil engineering. And self-compacting concrete is a kind of high-performance concrete. Its mixture has high fluidity without segregation and bleeding, and can level itself without vibration, and is filled with models and wrapped steel bars; its slump The time loss is small. Due to the low cement consumption of self-compacting concrete, the high utilization rate of waste slag and good construction performance, it can save waste, manpower and material resources, speed up the construction progress, reduce the overall cost of concrete, and solve the problem of disturbing people when pouring concrete, especially for difficult-to-use concrete. Pouring, even parts that cannot be pour...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B28/04
Inventor 曾雷刘桂兰张巍邓裕才薛燕
Owner XINAO ECOLOGICAL CONSTR MATERIALS
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