Anti-crack pavement structure and construction method
A technology of pavement structure and construction method, which is applied in the field of municipal engineering and can solve problems such as easy cracks in asphalt pavement
Pending Publication Date: 2021-11-30
CHINA FIRST HIGHWAY ENG +1
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Problems solved by technology
[0004] The purpose of the present invention is to provide an anti-crack pavement structure and construction method to solve the technical problem that the asphalt pavement is easy to crack
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[0025] refer to figure 1 , the present invention provides a crack-resistant pavement structure, including a pavement structure located on a roadbed 100, wherein the pavement structure includes, from bottom to top, a graded crushed stone cushion 200, an inorganic binder stabilized material base, and a graded crushed stone Base course 500 and asphalt concrete surface course 600.
[0026] On the subgrade 100, a graded crushed stone cushion 200, an inorganic binder stabilized material base, a graded crushed stone base 500, and an asphalt concrete surface layer 600 are sequentially laid; among them, 4% cement stabilized sand and gravel are selected for the stabilized material base without mechanism materials, and no Mechanism-stabilized material bases are more sensitive to changes in humidity and temperature. During the service process, due to the combined effects of temperature, humidity and loads, cracks are prone to occur, which in turn leads to the formation of reflective crack...
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Abstract
The invention provides an anti-crack pavement structure and a construction method, and relates to the technical field of municipal engineering. The anti-crack pavement structure comprises a pavement structure located on a roadbed. The pavement structure sequentially comprises a graded broken stone hardcore, an inorganic binder stabilizing material base layer, a graded broken stone base layer and an asphalt concrete surface layer from bottom to top. The graded broken stone of the anti-crack pavement structure provided by the invention belongs to granular mixtures, and the problem of reflection cracks of the asphalt concrete surface layer is solved by virtue of the dissipation effect of the graded broken stone on stress, that is, when the inorganic binder stabilizing material base layer generates cracks, the graded broken stone base layers are arranged on the inorganic binder stabilizing material base layer and the asphalt concrete surface layer, and the graded broken stone base layer can dissipate stress, so that the problem of emission cracks of the inorganic binder stabilizing material base layer is solved.
Description
technical field [0001] The invention relates to the technical field of municipal engineering, in particular to a crack-resistant pavement structure and a construction method. Background technique [0002] In order to improve the service life of the pavement structure, my country has long adopted the design idea of "strong foundation, thin surface, stable soil foundation". Based on my country's economic foundation and the current situation of highway engineering construction, the semi-rigid base course represented by cement-stabilized macadam will still be widely used for a long time due to its good bearing capacity, high stability, and strong frost resistance. In the pavement structure of roads of various grades. However, semi-rigid base materials are brittle and sensitive to changes in humidity and temperature. [0003] Due to the combined effect of temperature, humidity, load and other factors during service, cracks are prone to occur, and soon after the road is opened ...
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Login to View More IPC IPC(8): E01C7/32
CPCE01C7/32
Inventor 李伟王玉果郑德荣刘培刚黄浩吴景利
Owner CHINA FIRST HIGHWAY ENG