A temporary road pavement structure and road construction method

Abstract

The invention discloses a temporary road pavement structure which comprises a roadbed, a base layer and a surface layer from bottom to top in sequence, wherein the base layer is a cured soil layer with cement and a soil curing agent; the surface layer is a macadam floor consisting of graded broken stone. By virtue of properties of the soil curing agent, the soil curing agent is mixed with mixing materials, through a series of physical and chemical reactions, the compactness of a soil body is increased, the soil body is a dense stable soil layer, and thus the bearing capability of the roadbed can be greatly improved. The soil curing agent is wide in adaptability, is capable of effectively curing soil, mud, various solid building wastes and the like, and is applicable to large-scale recycledand reused building wastes. The cured soil layer made of the soil curing agent is used as the road base layer, so that compared with a conventional temporary road, the temperature road made with theroad base layer is high in strength and good in water stability and dry shrinkage resistance, the amounts of conventional road construction materials such as lime, cement, coal ash and macadam can bereduced, and the road construction cost can be effectively reduced.

Description

technical field [0001] The invention relates to the technical field of road engineering, in particular to a temporary road pavement structure and a road construction method. Background technique [0002] Temporary roads refer to temporary roads or temporary bridges built to meet the needs of survey and construction and to facilitate the transportation of materials and machinery in the construction of the main project. Temporary roads need to be demolished or recultivated after the completion of the main project. Therefore, the construction of temporary roads should maximize the entry and deployment of construction machinery and materials, and minimize pollution and damage to farmland and the environment. [0003] At present, lime reinforced soil and fly ash reinforced soil are widely used at home and abroad, but lime soil and fly ash soil have two main disadvantages in engineering application: first, the early strength is low and the integrity is poor, and it generally takes...

AI Technical Summary

Problems solved by technology

[0003] At present, lime reinforced soil and fly ash reinforced soil are widely used at home and abroad, but lime soil and fly ash soil have two main disadvantages in engineering application: first, the early strength is low and the integrity is poor, and it generally takes more than seven days to form a certain strength. This is extremely unfavorable to the arrangement of the construction period and the saving of funds

The second is that the water stability and freezing stability of the two are seriously insufficient. During the use period, with the seasonal changes of temperature and humidity, more shrinkage cracks are prone to occur, resulting in a decrease in strength.

Powder soil stabilizer has problems such as poor uniformity, difficulty in controlling uniformity, easy caking, inconsistent fineness and properties, etc.

And existing liquid type soil solidifying agent (as Chinese patent application CN104694133A, CN105038806B) has poor water stability, contains inorganic acids such as sulfuric acid or acidic salts, is strongly acidic, not only brings great harm to the operator Dangerous, at the same time strong acidity is very unfavorable to the restoration of planting soil in the future, it is environmentally destructive, and it does not meet the current development requirements of "resource conservation and environmental friendliness"

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