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Cement stabilized macadam mixture and road base layer construction method used in high-temperature seasons

A cement-stabilized gravel and construction method technology, which is applied to roads, roads, cement mixing devices, etc., can solve the problems of insufficient effective construction time of cement-stabilized gravel mixtures, and achieve delayed water stabilization time, easy to master, and low investment low cost effect

Active Publication Date: 2020-01-21
北京城建华晟交通建设有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a cement-stabilized gravel mixture and a road base construction method in high-temperature seasons, to solve the problem of insufficient effective construction time of the cement-stabilized gravel mixture in high-temperature seasons and when ordinary non-retarding cement is used

Method used

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  • Cement stabilized macadam mixture and road base layer construction method used in high-temperature seasons
  • Cement stabilized macadam mixture and road base layer construction method used in high-temperature seasons
  • Cement stabilized macadam mixture and road base layer construction method used in high-temperature seasons

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Effect test

Embodiment

[0054]A cement-stabilized crushed stone mixture comprising cement, sucrose solution, stabilized crushed stone coarse aggregate and fine aggregate,

[0055] Its component mass ratio is as follows:

[0056] Cement: 3%-5%;

[0057] Stabilized gravel coarse aggregate: 60%-65%;

[0058] Fine aggregate: 35%-40%;

[0059] The rest is sucrose solution.

[0060] This method of road base construction in high temperature season using cement-stabilized gravel mixture, the construction steps are as follows:

[0061] Step 1, mix ratio design of cement-stabilized gravel mixture:

[0062] Adjust according to the results of on-site sampling and screening, among which:

[0063] The gradation of the aggregate is close to the aggregate gradation curve of the indoor mix ratio design, and the deviation range of the sieve hole is controlled within ±3%;

[0064] According to the on-site construction temperature, determine the cement quality, water quality and the amount of sucrose in the water ...

Embodiment 1

[0099] Embodiment 1: The cement stabilized crushed stone mixture is composed of the following mass percentage components, cement: 5%, sucrose: 0.1‰ (accounting for cement); stabilized crushed stone coarse aggregate: 60%-65%, fine aggregate: 35% -40%.

Embodiment 2

[0100] Embodiment 2: The cement stabilized crushed stone mixture is composed of the following mass percentage components, cement: 4.5%, sucrose: 0.2‰ (accounting for cement); stabilized crushed stone coarse aggregate: 60%-65%, fine aggregate: 35% -40%.

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Abstract

The invention discloses a cement stabilized macadam mixture and a road base layer construction method used in high-temperature seasons. The mixture comprises cement, a saccharose solution, stabilizedmacadam rough aggregates and fine aggregates. Saccharose is fused in cement stabilized macadam mixed water, the cement hydration reaction can be delayed, the non-delayed-coagulation cement delayed coagulation effect is achieved, and the cement stabilized macadam mixture has sufficient construction delay time. The construction delay time can be flexibly adjusted according to the mixing amount, thesufficient construction time can be achieved for the cement stabilized macadam mixture under the situation that ordinary cement is used in the scorching summer, and accordingly the engineering qualityis ensured.

Description

technical field [0001] The invention belongs to road engineering, in particular to a road base construction method. Background technique [0002] In road engineering construction, cement-stabilized macadam is a relatively common material structure as the base layer, and it is widely used in various places. However, with the adjustment of the production capacity of the cement industry, the slow-setting cement specially used for roads is no longer produced in many areas due to its small application range, forcing the road base construction in some areas to use conventional building structure cement, and the setting time of this cement It is very short, usually 1.5 to 2 hours, which cannot meet the demand of 2 to 3 hours for the delay time of road base construction, which affects the quality of base construction. [0003] Due to the limited construction period, the construction of the road base is inevitable in high temperature seasons. In high temperature seasons, the effecti...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E01C3/00C04B28/00B28C5/08
CPCB28C5/08C04B28/00C04B2111/0075E01C3/00C04B24/10C04B14/02
Inventor 张勇刘飞付玉恒常改毛何迪管建华齐永超李志强
Owner 北京城建华晟交通建设有限公司
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