Environment-friendly impervious concrete and preparation method thereof

An impermeable concrete, environment-friendly technology, applied in the field of asphalt concrete, can solve the problems of low impermeability and water resistance, reduce the service life of concrete, etc., and achieve the effects of guaranteed impermeability, compact structure, and simple preparation process

Inactive Publication Date: 2021-10-15
上海楼诚混凝土有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] In view of the related technologies mentioned above, the concrete obtained by mixing waste concrete blocks with cement after crushing and screening can be put into use in construction, but its general impermeability and water resistance are not high. During long-term use, will reduce the service life of concrete

Method used

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  • Environment-friendly impervious concrete and preparation method thereof
  • Environment-friendly impervious concrete and preparation method thereof
  • Environment-friendly impervious concrete and preparation method thereof

Examples

Experimental program
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Effect test

preparation example 1

[0059] A modified recycled aggregate, the preparation steps of which are as follows:

[0060] a. Pretreatment: first remove impurities and crush the waste concrete block, screen the crushed powder with a particle size of less than 15mm, then put it into the pickling solution with a pH of 3.0, heat it to 80°C under vacuum, and stir at 1000r / min 30min, obtained recycled aggregate;

[0061] The pickling solution is an aqueous solution of oxalic acid.

[0062] b. Modification treatment: put the recycled aggregate prepared in a into the modification solution at a weight ratio of 1:0.2, heat to 120°C and stir at 1000r / min for 30min, then freeze and dry at 0°C for 10min , and then carry out secondary crushing, and screen the crushed powder with a particle size of less than 20mm as the modified recycled aggregate;

[0063] The modified solution is composed of modified sol and modified filler in a weight ratio of 1:0.1;

[0064] The modified sol is composed of nano-scale silica sol,...

preparation example 2

[0067] A modified recycled aggregate, the difference from Preparation Example 1 is that the recycled aggregate prepared in a is put into the modified solution at a weight ratio of 1:0.3.

preparation example 3

[0069] A modified recycled aggregate, the difference from Preparation Example 1 is that the recycled aggregate prepared in a is put into the modified solution at a weight ratio of 1:0.4.

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Abstract

The invention relates to environment-friendly impervious concrete and a preparation method thereof. The invention relates to environment-friendly impermeable concrete, which is prepared from the following components in parts by weight: 200 to 300 parts of cement; 500 to 600 parts of fine stone; 400 to 450 parts of sand; 100 to 150 parts of fly ash; 2 to 5 parts of an air entraining agent; 1.5 to 2.0 parts of an anti-permeability agent; and 200 to 500 parts of modified recycled aggregate. The modified recycled aggregate is prepared by the following steps: a, pretreatment: firstly, performing impurity removal, crushing and screening on waste concrete blocks, and then heating and stirring the waste concrete blocks and a pickling solution in vacuum to prepare the recycled aggregate; and b, modification treatment: heating and stirring the recycled aggregate and the modification liquid, freezing and drying, and crushing and screening to obtain the modified recycled aggregate. Modification liquid is prepared from modified sol and modified filler; and modification sol is prepared from nanoscale silicon dioxide sol, sodium methylsilanolate and triethanolamine. The concrete provided by the invention has the advantages of environmental protection and impermeability.

Description

technical field [0001] The application relates to the technical field of asphalt concrete, more specifically, it relates to an environment-friendly anti-seepage concrete and a preparation method thereof. Background technique [0002] As one of the most important basic building materials in the world today, cement concrete is widely used in various fields due to its excellent characteristics and low cost. However, with the promotion and use of this material and the continuous renewal and iteration of buildings, a large number of waste concrete blocks will be generated when demolishing old buildings, which will not only cause environmental pollution, but also cause a waste of non-renewable mine resources. Therefore, environmentally friendly concrete that can recycle waste concrete blocks has emerged as the times require. [0003] The environment-friendly concrete in the related art is composed of aggregate, recycled aggregate and cement slurry, wherein the recycled aggregate ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B28/04C04B111/27
CPCC04B28/04C04B2111/00293C04B2111/00017C04B2111/27C04B2201/50C04B14/02C04B14/06C04B18/08C04B18/16C04B24/04C04B14/062C04B24/122C04B24/42C04B22/16C04B24/20C04B24/085
Inventor 吴宗秀王洁
Owner 上海楼诚混凝土有限公司
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