Evaluation method for bonding strength of drainage asphalt mixture joint

Abstract

The invention provides an evaluation method for the bonding strength of a drainage asphalt mixture joint. The evaluation method comprises the following steps: forming a platy rut sample, and cutting the rut sample into two half block test pieces with equal area; smearing a to-be-evaluated joint material on a cutting joint, and curing; molding the cured half-piece rut test piece and the other half-piece test piece on which the joint material is not smeared to obtain a complete platy rut test piece; cutting a joist, dividing joist test pieces into two groups, and separately carrying out a nonmetal tensile test and a bending test on the joist test pieces. According to the evaluation method provided by the invention, a universal testing machine is adopted, and the cutting size of the test piece is below 20cm, so that the operation in a room is facilitated; the evaluation method is an indoor test method with high feasibility; the evaluation result gives out valuable guidance for selection of the joint material and site joint construction.

Description

technical field [0001] The invention belongs to the technical field of highway engineering, and relates to a method for evaluating the bonding strength of drainage asphalt mixture joints. Background technique [0002] Drainage asphalt pavement joints refer to the construction of the stubble parts between different road widths during the construction and paving of traffic road pavements. For pavements paved with drainage asphalt materials, drainage asphalt pavement joints are an important factor affecting the smoothness of the pavement, and are also an important part of the pavement. Poor bonding strength of the joints is likely to cause structural defects in the pavement. During the opening process of the pavement, jumping at the joints of the drainage asphalt pavement is a dangerous situation that often occurs when driving on the road. There have been quality problems such as sinking or bulges, cracks, and even looseness. Drainage asphalt pavement joint construction is a ...

AI Technical Summary

Problems solved by technology

However, its large gap characteristics, especially at the joints, such as improper construction at the joints, will cause the gaps in the joints to be too large, and phenomena such as sinking or protrusions, cracks, and even looseness are more likely to occur

However, there is still no effective test method for how to evaluate the strength of the bonding force at the seam.

Images