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Cold-mixed concrete and preparation method thereof

A concrete and cold mix technology, applied in the field of building materials, can solve the problems of high VOC, low utilization rate of steel slag, and poor interface adhesion of hot mix asphalt concrete, so as to improve road performance, improve poor high and low temperature performance, enhance The effect of interfacial adhesion

Inactive Publication Date: 2020-12-11
SHENZHEN TRAFFIC CONSTR ENG TEST & DETECTION CENT
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of this application is to provide a cold-mix concrete and its preparation method, which aims to solve the problems of low utilization rate of existing steel slag, high VOC of hot-mix asphalt concrete, poor interface adhesion, low strength and poor weather resistance to a certain extent

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  • Cold-mixed concrete and preparation method thereof
  • Cold-mixed concrete and preparation method thereof
  • Cold-mixed concrete and preparation method thereof

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preparation example Construction

[0032] The second aspect of the embodiment of the present application provides a method for preparing cold-mix concrete, comprising the steps of:

[0033] 100 parts of coarse aggregate, 40-60 parts of fine aggregate, 50-80 parts of filler, 2-6 parts of emulsified asphalt, 8-12 parts of water-based epoxy resin, 2-6 parts of water-based curing agent It is mixed with 0.1-0.5 parts of surfactant to obtain cold-mixed concrete; wherein, the coarse aggregate and the fine aggregate are selected from steel slag.

[0034] The preparation method of cold-mix concrete provided by the second aspect of the present application belongs to the cold-mix process. At room temperature, 100 parts of coarse aggregate, 40-60 parts of fine aggregate, 50-80 parts of filler, 2-6 parts The emulsified asphalt, 8-12 parts of water-based epoxy resin, 2-6 parts of water-based curing agent, and 0.1-0.5 parts of surfactant are mixed to obtain cold-mix concrete. The preparation method provided in the embodiment...

Embodiment 1

[0047] A kind of cold mix concrete, comprises following preparation steps:

[0048] ① According to the mass ratio of coarse aggregate: fine aggregate: filler: emulsified asphalt: water-based epoxy resin: water-based curing agent: surfactant is 100:40:50:2:8:2:2:0.1 (among them, water-based The ratio of epoxy resin to curing agent is selected according to product performance), select coarse aggregate, fine aggregate, filler, emulsified asphalt, water-based epoxy resin, water-based curing agent and surfactant, and set aside.

[0049] Among them, the coarse aggregate is steel slag, the maximum nominal particle size is 13.2mm, and the performance index meets the requirements of coarse aggregate for asphalt mixture in "Technical Specifications for Construction of Highway Asphalt Pavement" (JTG F40-2004). The fine aggregate is steel slag, the maximum nominal particle size is 4.75mm, and the performance index meets the requirements of fine aggregate for asphalt mixture in the "Techni...

Embodiment 2

[0052] A kind of cold mix concrete, comprises following preparation steps:

[0053] ①Coarse aggregate by mass ratio: fine aggregate: filler: emulsified asphalt: water-based epoxy resin: water-based curing agent: surfactant = 100:45:55:3:9:3:3:0.2 (among them, water-based The ratio of epoxy resin to curing agent should be selected according to the product performance), select coarse aggregate, fine aggregate, filler, emulsified asphalt, water-based epoxy resin, water-based curing agent and surfactant, and set aside.

[0054] Among them, the coarse aggregate is steel slag, the maximum nominal particle size is 13.2mm, and the performance index meets the requirements of coarse aggregate for asphalt mixture in "Technical Specifications for Construction of Highway Asphalt Pavement" (JTG F40-2004). The fine aggregate is steel slag, the maximum nominal particle size is 4.75mm, and the performance index meets the requirements of fine aggregate for asphalt mixture in the "Technical Spec...

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Abstract

The invention belongs to the technical field of building materials, and particularly relates to cold-mixed concrete which comprises the following raw material components in parts by weight: 100 partsof coarse aggregate, 40-60 parts of fine aggregate, 50-80 parts of filler, 2-6 parts of emulsified asphalt, 8-12 parts of water-borne epoxy resin, 2-6 parts of a water-borne curing agent and 0.1-0.5 parts of a surfactant, wherein the coarse aggregate and the fine aggregate are selected from steel slag. The cold-mixed concrete does not need to be mixed under the heating condition, and is low in volatile organic compound content, green and environmentally friendly. Through the combined action of the components in specific proportions, the concrete interface bonding force is high, application andconstruction are flexible and convenient, and the formed concrete is high in strength and excellent in high and low temperature performance.

Description

technical field [0001] The application belongs to the technical field of building materials, and in particular relates to a cold-mix concrete and a preparation method of the cold-mix concrete. Background technique [0002] With the rapid development of highway construction in our country, there are fewer and fewer high-grade stone materials that can be used for asphalt pavement, especially alkaline stone materials with good adhesion to acidic asphalt. In addition, my country has a vast territory and its geographical features have different characteristics depending on the region. From the perspective of aggregates for asphalt pavement, the distribution of high-quality stone materials is extremely uneven. At the same time, it does not conform to the construction concept of "selecting nearby materials". [0003] Steel slag is a by-product of the iron and steel refining process. It has excellent physical and mechanical properties such as high hardness, high density, high streng...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B26/26
CPCC04B26/26C04B2111/0075C04B2201/50
Inventor 黎木平孙政陈小冬侯茜茜陈黎旋魏港回孙锰
Owner SHENZHEN TRAFFIC CONSTR ENG TEST & DETECTION CENT
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