Pavement structure of rubber powder modified cement stabilized macadam mixture base course and proposing method of pavement structure

Abstract

The invention relates to a pavement structure of a rubber powder modified cement stabilized macadam mixture base course. The pavement structure comprises a bituminous concrete pavement surface layer,a cement stabilized macadam mixture base course, a graded broken stone subbase and a rubber powder modified cement stabilized macadam mixture base course, wherein the thickness of the rubber powder cement stabilized macadam mixture base course is 20 to 22cm, and the modulus of the rubber powder cement stabilized macadam mixture base course is 800 to 1000MPa; the thickness of the cement stabilizedmacadam mixture base course is 18 to 20cm, the modulus of the cement stabilized macadam mixture base course is 1300 to 2000MPa, and the thickness of the bituminous concrete pavement surface layer is 12 to 25cm. The pavement structure of the rubber powder modified cement stabilized macadam mixture base course, disclosed by the invention, has positive social and economic significance for delaying the appearance of pavement reflective cracks under heavy load traffic and prolonging the service life of the pavement.

Description

technical field [0001] The invention belongs to the technical field of construction, and relates to a rubber powder modified cement stabilized crushed stone mixture base pavement structure and a drafting method thereof. Background technique [0002] At present, with the development of my country's economic construction, the national economy urgently needs a large amount of energy to be transported out of the energy production area in time. According to the latest survey report, the proportion of cargo transportation in my country's comprehensive transportation system is relatively high, reaching 75.5%. The volume of freight on arterial roads (such as national highways and provincial highways) has increased sharply. Driven by economic interests, many freight drivers use overloading to reduce operating costs. As the proportion of overloaded vehicles continues to increase, the rate of overloading of freight vehicles is also rising sharply. Under the interaction of these factor...

AI Technical Summary

Problems solved by technology

The base layer of this patent is dense asphalt stabilized macadam ATB-25 layer. Compared with cement stabilized macadam mixture base, the cost is more expensive, the initial investment is large for large-scale use, and the practicability is poor.

The anti-fatigue layer of this patent is a rubber-modified asphalt AC-10 layer. Compared with the rubber powder modified cement stabilized gravel base, it also has the problem of high cost, and its processing operation and laying process requirements are relatively high, which does not meet the requirements. Principles of ease of use and efficiency in processing

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