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Environment-friendly composite additive modified cement stabilized macadam mixture and preparation method thereof

A technology of cement-stabilized gravel and composite admixture, which is applied in the direction of climate sustainability, sustainable waste treatment, solid waste management, etc., can solve problems such as insufficient road performance and short service life, and achieve good economic benefits and improve Anti-freeze performance, effect of reducing cracking

Pending Publication Date: 2021-11-05
NORTH CHINA UNIV OF WATER RESOURCES & ELECTRIC POWER
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide an environmentally friendly composite admixture modified cement stabilized gravel mixture and its preparation method, aiming to solve the technical problems of insufficient road performance and short service life of the existing cement stabilized gravel mixture

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] Embodiment 1: An environment-friendly composite admixture modified cement stabilized gravel mixture is made of the following raw materials in parts by weight:

[0032] 83 parts of gravel, 0.4 parts of modified rubber powder, 0.3 parts of nano-graphene microflakes (KNG-180-3), 4 parts of road Portland cement, 0.02 parts of retarder sodium tripolyphosphate, 9 parts of ceramic fragments, 0.4 part of coir fiber, 0.6 part of salix fiber; the gradation adopted is C-B-2 type.

Embodiment 2

[0033] Embodiment 2: An environment-friendly composite admixture modified cement stabilized gravel mixture is made of the following raw materials in parts by weight:

[0034] 83 parts of gravel, 0.5 parts of modified rubber powder, 0.4 parts of nano-graphene microflakes, 5 parts of road portland cement, 0.03 parts of retarder sodium tripolyphosphate, 10 parts of ceramic fragments, 0.6 parts of coconut shell fiber, sand 0.7 parts of willow fiber; the gradation is C-B-2 type.

Embodiment 3

[0035] Embodiment 3: An environment-friendly composite admixture modified cement stabilized gravel mixture is made from the following raw materials in parts by weight:

[0036] 83 parts of gravel, 0.6 parts of modified rubber powder, 0.5 parts of nano-graphene microflakes, 5 parts of road portland cement, 0.04 parts of retarder sodium tripolyphosphate, 11 parts of ceramic fragments, 0.8 parts of coconut shell fiber, sand 0.9 parts of willow fiber; the gradation is C-B-2 type.

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Abstract

The invention discloses an environment-friendly composite additive modified cement stabilized macadam mixture. The environment-friendly composite additive modified cement stabilized macadam mixture is prepared from the following raw materials in parts by weight: 75 to 90 parts of macadam, 0.3 to 1.5 parts of modified rubber powder, 0.3 to 1.0 part of nano graphene microchip, 3 to 8 parts of cement, 0.02 to 0.10 part of retarder, 9 to 16 parts of ceramic fragment, 0.3 to 2.2 parts of coconut fiber and 0.5 to 1.9 parts of salix mongolica fiber. The addition amount of the water accounts for 4.2-6.5% of the mass of the dry materials. The environment-friendly composite additive modified cement stabilized macadam mixture has the advantages of excellent pavement performance, simple preparation process and non-toxic and harmless raw materials, can improve the anti-freezing property and dry shrinkage property of a road base, and plays a significant role in prolonging the service life of an asphalt pavement; the environment-friendly composite additive modified cement stabilized macadam mixture is environment-friendly, low-carbon, wide in raw material source, free of pollution in the production process, low in price and low in cost, and has good economic and social benefits.

Description

technical field [0001] The invention relates to the technical field of road engineering materials, in particular to an environment-friendly composite admixture modified cement-stabilized gravel mixture and a preparation method thereof. Background technique [0002] With the development of the transportation industry, it also drives the development of the automobile industry, and the overloading phenomenon faced by roads is also becoming more and more serious. At present, my country's road construction is mainly based on cement-stabilized macadam semi-rigid bases, and usually a large number of cracks will appear within a few years after opening to traffic. The semi-rigid base has its own advantages, including good integrity and simple construction technology, but the ordinary cement-stabilized crushed stone semi-rigid base is very prone to shrinkage cracks. [0003] For this reason, people add rubber powder to it to improve its performance. However, in the actual constructio...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B28/04C04B18/24C04B18/26C04B18/22C04B20/02C04B22/16C04B111/20
CPCC04B28/04C04B18/248C04B18/265C04B18/22C04B20/023C04B22/16C04B2111/0075C04B2111/29C04B2111/20C04B2201/52C04B18/165C04B14/024C04B14/02Y02W30/91
Inventor 李振霞陈渊召张亚婕张渊龙杨玉庆郭滕滕王云鹏李战辉任清何梓闻冯秋红孙卫华李东伟李高鹏何新民王朝辉郭鹏牛相杰江晓晓孙新凯聂嘉昕王宁丁盛权王琪琛李政辰张运堂冯小伟
Owner NORTH CHINA UNIV OF WATER RESOURCES & ELECTRIC POWER
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