Construction process for changing cement concrete pavement into asphalt pavement

Abstract

The invention provides a construction process for changing a cement concrete pavement into an asphalt pavement. The construction process comprises the following steps step 1, milling an original cement concrete pavement and cleaning waste residues; step 2, spreading SBR modified emulsified asphalt on the milled cement concrete surface for multiple times, wherein a spreading amount of starting, stopping and joints is slightly greater than the normal spreading amount during spreading; step 3, mixing a TPS high-viscosity asphalt mixture and paving the mixture on the surface of the SBR modified emulsified asphalt, wherein a paving starting speed is slightly lower than a normal paving speed during paving; and step 4, rolling the paved TPS high-viscosity asphalt mixture, wherein the TPS high-viscosity asphalt mixture starts to be rolled in a high-temperature state and cannot be repeatedly rolled in a low-temperature state. Due to a fact that the TPS high-viscosity asphalt has an excellent viscosity characteristic and an adhesion capacity, the TPS high-viscosity asphalt surface layer is adopted as an additional paving layer of the cement concrete pavement, a defect that the asphalt pavement is prone to cracking is overcome, a pavement bearing capacity is improved, and pavement safety and durability are enhanced.

Description

technical field [0001] The invention relates to the field of pavement construction, in particular to a construction technique for converting cement concrete pavement into asphalt pavement. Background technique [0002] White to black, a term used in road construction, is to transform the original cement concrete pavement (gray white) into asphalt concrete pavement (black) to achieve the effects of environmental protection, dust prevention, noise reduction and driving comfort. Compared with the original concrete pavement, the adhesion between the road surface and the tires after white to black is enhanced, the braking performance of the vehicle is greatly improved in handling emergencies, and the vehicle is safer and more stable to drive. [0003] The current pavement engineering "white to black" asphalt pavement structure has problems such as easy cracking, poor drainage performance, low strength, poor healing ability after damage, and short service life. [0004] In order ...

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Problems solved by technology

[0003] The current pavement engineering "white to black" asphalt pavement structure has problems such as easy cracking, poor drainage performance, low strength, poor healing ability after damage, and short service life.

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