HMA/CC (Hot-Mix Asphalt)/(Cement Concrete) composite type pavement structure and constructing method thereof

Abstract

The invention relates to an HMA/CC (Hot-Mix Asphalt)/(Cement Concrete) composite type pavement structure and a constructing method thereof. The composite type pavement structure comprises a roadbed layer, wherein an emulsified asphalt dilute slurry seal layer, a cement concrete slab layer, a clamped rib layer and a hot mix asphalt layer are sequentially paved on the roadbed layer. The pavement structure mainly presents the characteristic of rigidness and also has flexibility; the asphalt layer can be used for greatly relieving impacts of vehicles to the pavement board; the clamped rib layer in the structural system has the advantages of small material modulus, high viscosity and good elasticity recovery performance and can be used for better absorbing stress generated by deformation of a cement concrete slab and effectively suppressing the transmission of reflection cracks; and the emulsified asphalt dilute slurry seal layer can be used as a powerful measure of preventive curing, greatly and can improve the waterproofing of the pavement and avoid damages such as pumping, and the like. The structure provided by the invention has the advantages of reasonable structural design, simple construction method and lower construction cost.

Description

technical field [0001] The invention relates to a rigid-flexible composite pavement structure, in particular to an HMA / CC composite pavement structure and a construction method thereof. Background technique [0002] Cement pavement and asphalt pavement are the two main forms of advanced pavement structure, which are widely used all over the world. However, as the price of asphalt continues to rise in recent years, the cost of building asphalt pavement continues to rise. There is a large amount of limestone distributed in our country, the output of cement is large, and the price is relatively cheap. Various regions in our country have begun to study and promote the use of cement pavement in combination with their own actual conditions, so the number of cement concrete pavement construction is increasing. However, with the development of my country's economic construction and transportation industry, the traffic volume of highways is increasing, and the phenomenon of cement c...

AI Technical Summary

Problems solved by technology

However, the research on the structure of asphalt layer on cement concrete pavement at home and abroad is still in its infancy, and there is still a lack of in-depth and detailed research on the structural form of rigid-flexible pavement. From the perspective of engineering practical application, the main problems focus on two aspects: one is The treatment technology of the rigid-flexible interface, how to do the bonding and waterproofing of the rigid-flexible interface plays a very important role in the strength, stability, and durability of the pavement after the overlay; the second is the prevention and treatment of reflection cracks

Images