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Full-recycled aggregate concrete and preparation method thereof

A technology of recycled aggregate and recycled coarse aggregate, applied in the field of concrete, can solve the problems of poor work performance and durability, low strength, etc., and achieve the effect of excellent work performance and durability

Pending Publication Date: 2022-03-04
HUIZHOU SENLUOKE MATERIAL TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] 2. Research on the replacement rate of recycled aggregates from construction waste. In the existing research, considering the impact of recycled aggregates on the performance of concrete, the implementation cases at this stage are relatively complicated, including partial replacement, full replacement, single replacement and Composite substitution, etc. JGJ / T240-2011 "Technical Regulations for the Application of Recycled Aggregate" expounds the replacement rate of recycled aggregates, and imposes certain restrictions on the application scenarios of types I, II, and III recycled aggregates
The mixing weight ratio of cement, construction waste coarse aggregate and construction waste fine aggregate is 1:(3~5):(1.5~3). Although sodium hydroxymethyl cellulose is added to this concrete, its strength is still relatively high. Low, poor work performance and durability

Method used

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  • Full-recycled aggregate concrete and preparation method thereof
  • Full-recycled aggregate concrete and preparation method thereof
  • Full-recycled aggregate concrete and preparation method thereof

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017]

[0018] The concrete preparation method of embodiment 1 is as follows:

[0019] Add the above-mentioned raw materials, except additives, into a mixing container according to a certain ratio, and pre-stir evenly, then add additives and water and stir for 5 minutes, then let stand for 5 minutes, and finally stir for 3 minutes to obtain concrete.

[0020] The concrete performance of embodiment 1 is as follows:

[0021]

Embodiment 2

[0023]

[0024] The concrete preparation method of embodiment 2 is as follows:

[0025] Add the above-mentioned raw materials, except additives, into a mixing container according to a certain ratio and pre-stir evenly, then add additives and water and stir for 2 minutes, then let stand for 3 minutes, and finally stir for 5 minutes to obtain concrete.

[0026] The concrete performance of embodiment 2 is as follows:

[0027]

Embodiment 3

[0029]

[0030] The concrete preparation method of embodiment 3 is as follows:

[0031] Add the above-mentioned raw materials, except additives, into a mixing container according to a certain ratio and pre-stir evenly, then add additives and water and stir for 5 minutes, then let stand for 5 minutes, and finally stir for 5 minutes to obtain concrete.

[0032] The concrete performance of embodiment 3 is as follows:

[0033]

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Abstract

The invention provides a fully recycled aggregate concrete, which is prepared from the following components in parts by weight: 200 to 350 parts of cement, 80 to 100 parts of coal ash, 40 to 100 parts of slag powder, 800 to 1000 parts of recycled fine aggregate, 200 to 400 parts of recycled coarse aggregate 1, 500 to 600 parts of recycled coarse aggregate 2 and 30 to 50 parts of concrete admixture, the ratio of the recycled fine aggregate property to the recycled coarse aggregate property 1 to the recycled coarse aggregate property 2 is 1: (0.80-1.0), the ratio of the recycled coarse aggregate property 1 to the recycled coarse aggregate property 2 is 1: (1.5-2.1), the fineness modulus of the recycled fine aggregate is 2.3-3.0, the particle size of the recycled fine aggregate 1 is 5mm-10mm, the particle size of the recycled coarse aggregate property 2 is 10mm-25mm, the admixture is a polycarboxylate superplasticizer, the water-reducing rate of the admixture is not less than 27%, and the water-reducing rate of the admixture is not less than 27%. The working performance and the durability of the concrete are favorably improved.

Description

technical field [0001] The invention relates to the technical field of concrete, in particular to a kind of fully recycled aggregate concrete and a preparation method. Background technique [0002] With the rapid development of my country's economy and the vigorous development of urbanization, the original natural ecological system has been greatly impacted and destroyed. It is necessary to fully promote the implementation strategies of "comprehensive conservation and recycling of resources and strengthening solid waste and garbage disposal". [0003] With the acceleration of industrialization and urbanization, and the rapid development of the construction industry, these have brought us an efficient and convenient way of life, but also produced certain negative effects. For example, the generation of a large amount of construction waste not only occupies valuable cultivated land resources, but also brings serious pollution to our production and living environment, directly...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B28/04C04B18/16
CPCC04B28/04C04B18/16C04B18/08C04B18/141C04B2103/302Y02W30/91
Inventor 邵品荣王莹邵子善郑兵李河何桂海邵子福黄启林
Owner HUIZHOU SENLUOKE MATERIAL TECH CO LTD
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