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Construction method of stabilized macadam self-curing cement layer pavement

A cement-stabilized gravel and self-maintenance technology, which is applied to roads, roads, and cohesive pavements paved on site, can solve problems such as cracks in the cement-stabilized gravel layer, reduce cracks, reduce sensitivity, and ensure self-curing effect of effect

Inactive Publication Date: 2021-08-10
HUITONG ROAD & BRIDGE CONSTR GROUP
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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 a construction method for stabilizing crushed stone self-maintaining cement layer pavement, to solve the above-mentioned problems in the prior art, thereby improving the problem of cracks in the cement-stabilized crushed stone layer and overcoming the time limitation problem during construction

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0041] A self-curing cement stabilized crushed stone mixture, the raw materials include the following components in parts by weight:

[0042] 80 parts of gravel aggregate, 15 parts of cement, 15 parts of water and 2.5 parts of self-curing agent;

[0043] Wherein, the self-curing agent is prepared from polyacrylate-13, polyoxyethylene fatty alcohol ether 709, polyoxymethylene fiber, emulsifier, stabilizer and water according to the mass ratio of 20:7:18:12:10:35;

[0044] Wherein, the emulsifier is tallow tetramine, and the stabilizer is polyacrylamide.

[0045] The preparation method of self-curing comprises the following steps:

[0046] (1) Mix and stir polyacrylate-13, polyoxyethylene fatty alcohol ether 709, emulsifier, stabilizer and water for 5 minutes;

[0047] (2) Add polyoxymethylene fibers to the reaction system, and stir at a medium speed for 10 minutes, so that the polyoxymethylene fibers are evenly dispersed;

[0048] (3) React the reaction system obtained in st...

Embodiment 2

[0050] A self-curing cement stabilized crushed stone mixture, the raw materials include the following components in parts by weight:

[0051] 100 parts of gravel aggregate, 25 parts of cement, 10 parts of water and 2 parts of self-curing agent;

[0052] Wherein, the self-curing agent is prepared from polyacrylate-13, polyoxyethylene fatty alcohol ether 709, polyoxymethylene fiber, emulsifier, stabilizer and water according to the mass ratio of 15:5:20:6:4:30;

[0053]Wherein, the emulsifier is tallow tetramine, and the stabilizer is polyacrylamide.

[0054] The preparation method of self-curing comprises the following steps:

[0055] (1) Mix and stir polyacrylate-13, polyoxyethylene fatty alcohol ether 709, emulsifier, stabilizer and water for 10 minutes;

[0056] (2) Add polyoxymethylene fibers to the reaction system, stir at a medium speed for 8 minutes, so that the polyoxymethylene fibers are evenly dispersed;

[0057] (3) React the reaction system obtained in step (2) a...

Embodiment 3

[0059] A self-curing cement stabilized crushed stone mixture, the raw materials include the following components in parts by weight:

[0060] 90 parts of gravel aggregate, 20 parts of cement, 12 parts of water and 2.3 parts of self-curing agent;

[0061] Wherein, the self-curing agent is prepared from polyacrylate-13, polyoxyethylene fatty alcohol ether 709, polyoxymethylene fiber, emulsifier, stabilizer and water according to the mass ratio of 18:8:25:8:6:32;

[0062] Wherein, the emulsifier is tallow tetramine, and the stabilizer is polyacrylamide.

[0063] The preparation method of self-curing comprises the following steps:

[0064] (1) Mix and stir polyacrylate-13, polyoxyethylene fatty alcohol ether 709, emulsifier, stabilizer and water for 15 minutes;

[0065] (2) Add polyoxymethylene fibers to the reaction system, stir at a medium speed for 5 minutes, so that the polyoxymethylene fibers are evenly dispersed;

[0066] (3) React the reaction system obtained in step (2)...

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Abstract

The invention discloses a construction method of a stabilized macadam self-curing cement layer pavement, and belongs to the technical field of road construction. The polyoxyethylene fatty alcohol ether and the polyacrylate are compounded to serve as a self-curing agent to be added into the cement stabilized macadam, the bonding performance between materials can be further improved, the brittleness problem of the cement stabilized macadam material is solved in a curing mode, a cement stabilized macadam layer is endowed with certain elasticity, and the sensitivity to temeprature and humidity is reduced, meanwhile, the polyformaldehyde fibers can further enhance the tensile strength and the compressive strength, the self-curing effect of the cement stabilized macadam mixed layer is guaranteed, and then cracks are reduced. According to the method, the joint laying delay time during laying of the cement stabilized macadam layer can be prolonged to 10 hours from current about 4 hours, the problem of time limitation during construction of joint laying is solved, and continuous construction of a longer section is guaranteed.

Description

technical field [0001] The invention relates to the technical field of road construction, in particular to a road surface construction method for self-maintaining cement layer of stabilized gravel. Background technique [0002] Cement-stabilized macadam has become a common material for the base course of high-grade highways and has been widely used. Cement-stabilized crushed stone has good mechanical properties, and its initial strength is high and accompanied by age growth, and its mechanical strength can also be adjusted according to actual engineering needs. Cement-stabilized macadam is characterized by high strength, good water stability, good frost resistance, and erosion resistance. It is an excellent pavement base material. However, cement stabilized macadam materials also have certain shortcomings, mainly because cement stabilized macadam is more brittle, which leads to strong sensitivity to humidity and temperature, and it is easy to cause cracks due to changes in ...

Claims

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Application Information

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IPC IPC(8): C04B24/32C04B24/26C04B28/00E01C7/14
CPCC04B24/2641C04B24/32C04B28/00C04B40/0039C04B2111/0075C04B2201/50E01C7/14E01C7/142C04B24/121C04B24/2652C04B24/00C04B14/02
Inventor 魏传勇刘明阳钱程时文莲黄威张若谋李爽李熙洋李旭李岩李志远刘欢欢刘晴枝刘硕马建
Owner HUITONG ROAD & BRIDGE CONSTR GROUP