Fiber-reinforced rubber asphalt stress absorbing layer and construction method thereof

Abstract

The invention provides a fiber-reinforced rubber asphalt stress absorbing layer and a construction method thereof. The fiber-reinforced rubber asphalt stress absorbing layer per square meter comprises the following components: 0.2-1.0 kg of SBS (styrene butadiene styrene) modified emulsified asphalt, 70-150 g of glass fibers, 1.5-3.0 kg of rubber asphalt and 10-20 kg of broken stones. The construction method comprises the following steps of: spraying an SBS modified emulsified asphalt layer and spreading the glass fibers sequentially on the clean and dry surface of a lower supporting layer; after the SBS modified emulsified asphalt breaks emulsion, spraying the rubber asphalt and spreading the broken stones; and finally, rolling a road surface, and controlling the time from the spraying of the rubber asphalt to the completion of the rolling within 10-20 minutes. The rubber asphalt stress absorbing layer prepared by the invention is firmly adhered to the lower supporting layer, can prevent the oil bleeding phenomenon of an asphalt surface layer and the generation of the reflection crack of the asphalt surface layer, improves the anti-cracking performance of the rubber asphalt stress absorbing layer, and prolongs the service life of the road surface.

Description

technical field [0001] The invention relates to a formula of road pavement materials and a manufacturing method thereof, in particular to a fiber-reinforced rubber asphalt stress-absorbing layer and a construction method thereof. Background technique [0002] The existing rubber asphalt stress absorbing layer is a rubber asphalt layer with high deformation capacity that is paved between the semi-rigid base and the asphalt pavement or between the cement concrete pavement and the asphalt pavement. It is mainly used to relieve the stress concentration in the cracks. Prevents reflective cracks from forming in asphalt pavements. [0003] In actual engineering, it often occurs that the rubber asphalt stress-absorbing layer and the underlying layer (semi-rigid base or cement concrete pavement) are not firmly bonded; at the same time, it is easy to cause the rubber asphalt to "move up" or even the asphalt surface layer to "spread oil". Phenomena, resulting in many diseases such as ...

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Problems solved by technology

[0003] In actual engineering, it often occurs that the rubber asphalt stress-absorbing layer and the underlying layer (semi-rigid base or cement concrete pavement) are not firmly bonded; at the same time, it is easy to cause the rubber asphalt to "move up" or even the asphalt surface layer to "spread oil". Phenomena, resulting in many diseases such as shifting, wrapping and rutting of the asphalt surface layer, which seriously affects the performance of the pavement and shortens the service life of the pavement

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