A kind of asphalt pavement pothole repair construction technology

Abstract

A repairing construction process for pits and slots of asphalt pavements is disclosed and relates to the technical field of road construction. The process includes following steps: S1) a step of contraction treatment, namely a step of cutting a crack position of an original pavement to form a treatment groove, and putting dry ice inside the treatment groove and on the original pavement close to the treatment groove; S2) a step of treatment before repairing, namely a step of, after the dry ice is volatized, cutting the original pavement around the treatment groove to form a construction grooveand cleaning the inside of the construction groove; S3) a step of basic treatment, namely a step of hoisting a reinforced concrete prefabricated slab, and putting the prefabricated slab to the bottomof the construction groove; and S4) a step of joint filling treatment, namely a step of spraying modified asphalt to the inner wall of the construction groove and pouring asphalt concrete into the construction groove. Through cooling the original pavement before repairing to allow the original pavement to contract, an effect of reducing secondary damage formed because a new pavement contracts dueto temperature changes during a using process in a later period is achieved.

Description

technical field [0001] The invention relates to the technical field of road construction, more specifically, it relates to a construction technique for repairing potholes on asphalt pavement. Background technique [0002] Asphalt pavement refers to various types of pavement paved with road asphalt materials mixed with mineral materials, and is widely used in road construction. After the asphalt pavement is built, cracks will occur due to long-term loads and other reasons. After the water enters the interior of the road along with the cracks, a large hydrodynamic pressure is generated under the driving force, which leads to the occurrence of depressions at the cracks on the road surface to form potholes. Therefore, when cracks appear on the pavement, it needs to be repaired in time to reduce the probability of generating larger potholes. [0003] The authorized announcement number is CN100516365C, and the authorized announcement date is July 22, 2009. The Chinese patent dis...

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Problems solved by technology

[0004] The disadvantage of the existing technology is that when the repaired new asphalt pavement is affected by temperature changes, temperature stress will be generated inside the new pavement, and because there is a stress hysteresis between the pavement asphalt bricks pasted later and the original pavement, Will lead to cracks at the joint, causing secondary damage

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