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Treatment method for road pavement base solidification modification

A treatment method and road surface technology, applied in the direction of roads, roads, road repair, etc., can solve the problems of poor crack resistance of the road base, and achieve the effects of simple construction method, reduced damage, and reduced occupation.

Active Publication Date: 2017-03-15
INST OF GEOLOGY & GEOPHYSICS CHINESE ACAD OF SCI
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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 treatment method for curing and modifying road pavement bases, which is used to solve the problem of poor crack resistance of traditional road bases

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0020] Embodiment: a kind of processing method of road pavement base solidification modification, comprises the following steps:

[0021] (1) Red mud mixture treatment: In terms of mass percentage, weigh 40 tons of red mud and put it into a silo of the cement stabilized soil mixing station, weigh 21 tons of 1# crushed stone, 2 21 tons of #crushed stone and 18 tons of 3# crushed stone are placed in another silo of the mixing station, and the materials in the two silos are added to the forced mixer, and the mixture is evenly mixed to obtain 100 tons of mixture ;

[0022] (2) Red mud mixture solidification treatment: In terms of mass percentage, weigh 7 tons of ordinary Portland cement with a strength of 32.5MPa, add it to a forced mixer, mix and stir evenly, and obtain 107 tons of solidified material;

[0023] (3) Mixing ratio of red mud solidified material: take the solidified material, use vibration molding method, mix the solidified material with water to form samples with d...

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PUM

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Abstract

A treatment method for road pavement base solidification modification is characterized by comprising five steps: red mud mixture treatment, mixture solidification treatment, water addition of a solidified material, improvement anti-cracking treatment of the solidified material and onsite paving test. The method can meet requirements of road base strength and rebound modulus, can be widely applied to filled soil lacking areas and areas with high output of red mud solid wastes. By the above method, occupancy of cultivated land by red mud can be minimized, damage of red mud to the environment is reduced, and waste is changed into valuable things. Through solidification and improvement treatments of red mud, crack resistance of road base can be enhanced, the problem that a traditional road base is easy to crack after design and construction is solved, and service life of the pavement is prolonged. The method is suitable for pavement base filling in road engineering, especially applicable to filled soil lacking road sections and areas abound in red mud.

Description

technical field [0001] The invention relates to the field of road engineering, in particular to a design of a pavement base and a construction method thereof. Background technique [0002] Traditional road base materials include cement stabilized soil, lime stabilized soil and fly ash stabilized gravel. Cement-stabilized crushed stone uses graded crushed stone as aggregate, uses a certain amount of cementitious material and sufficient mortar volume to fill the gaps in the aggregate, and paves and compacts according to the principle of embedded extrusion, with high strength and impermeability And frost resistance, but prone to shrinkage cracks, poor crack resistance. Lime-stabilized soil is mixed with slaked lime powder or quicklime powder into various crushed or original loose soils, and the mixture obtained after mixing, compacting and curing is called lime-stabilized soil, which has certain strength, but poor water resistance. weak. Fly ash stabilized crushed stone is a...

Claims

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Application Information

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IPC IPC(8): E01C21/00C04B28/04C04B18/04
CPCY02W30/91E01C21/00C04B18/0409C04B28/04C04B2111/00017
Inventor 李志清沈鑫周应新钱坤张晓锋陈武杜婷婷戚志宇樊思林汪永林李文曾维成吴尚峰
Owner INST OF GEOLOGY & GEOPHYSICS CHINESE ACAD OF SCI