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C30 self-compacting 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 high cost and large resource consumption, and achieve the effects of easy construction, low cost and good filling performance

Inactive Publication Date: 2013-05-29
北京元泰达环保科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] The purpose of the present invention is to provide a C30 self-compacting concrete prepared with recycled aggregates, aiming to solve the problems of large resource consumption and high cost of the existing C30 self-compacting concrete

Method used

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Embodiment Construction

[0018] 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.

[0019] The C30 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. :(3.01-3.43):(3.46-3.76):0.74:0.27:0.015:(0.80-0.87), where the water-binder ratio is 0.397-0.43. 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 water...

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Abstract

The invention is applicable to the field of building materials, and provides C30 self-compacting concrete prepared from recycled aggregate and a preparation method thereof. The concrete comprises the following raw materials: cement, reclaimed sand, the recycled aggregate, coal ash, fine-grinding mineral powder, an additive and water which are in the weight ratio of 1: (3.01 to 3.43): (3.46 to 3.76): 0.74: 0.27: 0.015: (0.80 to 0.87) according to the weight of the cement, wherein the water-binder ratio is 0.397 to 0.43. Therefore, the prepared C30 self-compacting concrete is good in filling ability, clearance passing ability, segregation resistance and stability and is easy to construct. In addition, the cost of the concrete is lowered greatly.

Description

technical field [0001] The invention belongs to the field of building materials, in particular to C30 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 poured...

Claims

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Application Information

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IPC IPC(8): C04B28/04C04B18/16
CPCY02W30/91
Inventor 曾雷刘桂兰马雪英尚百雨邓裕才
Owner 北京元泰达环保科技有限公司
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