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C30 durable recycled shaping aggregate concrete prepared from construction wastes and preparation method

A construction waste and durability technology, applied in the direction of climate sustainability, sustainable waste treatment, solid waste management, etc., can solve the problems of poor durability of recycled aggregates, low utilization rate of concrete aggregates, difficulty in recycling construction waste, etc. , to achieve the effect of material recycling guarantee, significant social and environmental benefits, and improved anti-chlorine penetration performance

Inactive Publication Date: 2016-03-02
CHINA SHANXI SIJIAN GRP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In order to solve the problems that construction waste in my country is difficult to reuse, the utilization rate of concrete aggregate in construction waste is low, and the durability of recycled aggregate is poor, the present invention provides a C30 durable recycled plastic aggregate concrete prepared from construction waste and Preparation

Method used

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  • C30 durable recycled shaping aggregate concrete prepared from construction wastes and preparation method
  • C30 durable recycled shaping aggregate concrete prepared from construction wastes and preparation method
  • C30 durable recycled shaping aggregate concrete prepared from construction wastes and preparation method

Examples

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Embodiment 1

[0015] Example 1: A C30 durable recycled plastic aggregate concrete prepared from construction waste, consisting of the following raw materials: cement 280kg, fly ash 50kg, mineral powder 80kg, fine aggregate 800kg, coarse aggregate 1020kg, plus The fine aggregate is 11.5kg of water and 180kg of water. The fine aggregate is a mixture of sand and recycled plastic fine aggregate. The recycled plastic fine aggregate accounts for 20% of the total weight of the fine aggregate. The coarse aggregate is crushed stone and recycled plastic coarse aggregate. Aggregate mixing, of which recycled plastic coarse aggregate accounts for 20% of the total weight of coarse aggregate.

[0016] The fineness modulus of the recycled plastic fine aggregate is 2.9%, and the apparent density is 2480kg / m 3 , The bulk density is 1390kg / m 3 , The content of fine powder is 3%, the content of mud is 0.8%, the water demand ratio of reclaimed mortar is 1.15, the strength ratio of reclaimed mortar is 1.00; the recl...

Embodiment 2

[0018] Example 2: A C30 durable recycled plastic aggregate concrete prepared from construction waste, consisting of the following raw materials: cement 280kg, fly ash 50kg, mineral powder 80kg, fine aggregate 800kg, coarse aggregate 1020kg, plus 11.5kg of water and 180kg of water. The fine aggregate is a mixture of sand and recycled plastic fine aggregate. The recycled plastic fine aggregate accounts for 40% of the total weight of the fine aggregate. The coarse aggregate is crushed stone and recycled plastic coarse aggregate. Aggregate mixing, of which recycled plastic coarse aggregate accounts for 40% of the total weight of coarse aggregate. The other methods are the same as those described in Example 1.

Embodiment 3

[0019] Example 3: A C30 durable recycled plastic aggregate concrete prepared from construction waste, composed of the following raw materials: cement 280kg, fly ash 50kg, mineral powder 80kg, fine aggregate 800kg, coarse aggregate 1020kg, plus 11.5kg of water and 180kg of water. The fine aggregate is a mixture of sand and recycled plastic fine aggregate. The recycled plastic fine aggregate accounts for 60% of the total weight of the fine aggregate. The coarse aggregate is crushed stone and recycled plastic coarse aggregate. Aggregate mixing, of which recycled plastic coarse aggregate accounts for 60% of the total weight of coarse aggregate. The other methods are the same as those described in Example 1.

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Abstract

The present invention belongs to the technical field of concrete used for a construction material and provides a C30 durable recycled shaping aggregate concrete prepared from construction wastes and a preparation method so as to solve the problems that construction wastes are difficult to recycle in China, the utilization rate of the concrete aggregates in the construction wastes is low, and the durability of the recycled aggregates is poor. The concrete is prepared by mixing cement, fly ash, ore powder, fine aggregates, coarse aggregates, an admixture and water according to a specific proportion, wherein the fine aggregates are a mixture of sand and recycled shaping fine aggregates, the weight of the recycled shaping fine aggregates accounts for 20-100% of the total weight of the fine aggregates, the coarse aggregates are a mixture of gravel and recycled shaping coarse aggregates, and the weight of the recycled shaping coarse aggregates accounts for 20-100% of the total weight of the coarse aggregates. Construction wastes are broken and particles are shaped to obtain the recycled shaping aggregates. On the premise that concrete blending proportion is not changed, natural aggregates are replaced into the recycled shaping aggregates, production costs are reduced, and a great economic benefit is generated. Energy is conserved, a demand for the natural aggregates is effectively reduced, and resources are effectively protected and conserved, thereby realizing environmental friendly construction.

Description

Technical field [0001] The invention belongs to the technical field of concrete for building materials, and specifically relates to a C30 durable recycled plastic aggregate concrete prepared from construction waste and a preparation method. Background technique [0002] With the development of the economy, the scale of cities is also expanding, and more and more suburban villages are incorporated into urban areas and become urban villages. According to statistics, in the 10 years from 2003 to 2012, the demolished area of ​​urban villages in Taiyuan City was about 4.66 million square meters. In 2013, a total of 50 urban villages in Taiyuan City began to be demolished. As of November 2013, a total of 4.5819 million square meters had been demolished and a large amount of construction waste was generated. Construction waste not only pollutes the environment but also takes a lot of limited land. The disposal of construction waste is also a huge project. As the most used construction ...

Claims

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Application Information

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IPC IPC(8): C04B28/00C04B18/16
CPCY02W30/91
Inventor 卫芷刘晖高凯凌刘雅晋李艳李峰陈晋明陈志伟赵慧郝志红郭志强高宇兵
Owner CHINA SHANXI SIJIAN GRP
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