Test method for interfacial consolidation strength of asphalt pavement with water-bearing asphalt

Abstract

The invention discloses a method for testing the solidification strength of a water-containing oilstone interface of an asphalt pavement. The method comprises the following five steps: carrying out preparation before test; carrying out primary preparation on test pieces; preparing test pieces with different water soaking time; determining the shear failure strength of the test pieces; and carryingout analogue computation on the water content of the oilstone interface of the matched test pieces. The method comprises the following specific test processes: carrying out indoor shear test on the test pieces with different water soaking time by virtue of a shear test instrument, and carrying out numerical simulation by virtue of a mass diffusion module of software ABAQUS, so as to obtain fittedcurves of water soaking time and interface water content; and finally, carrying out data processing, so as to obtain a fit relation between the water content of the oilstone interface and the shear strength. Compared with the prior art, the method has the beneficial effects that the relation between the water content of the oilstone interface and the total shear strength of a contact surface is determined by virtue of a numerical simulation-indoor test combined research method, and empirical methods in the past are effectively improved, so that the test data is relatively precise and scientific.

Description

technical field [0001] The invention belongs to the technical field of traffic civil engineering, and in particular relates to a method for testing the consolidation strength of the asphalt pavement water-containing oil-stone interface. Background technique [0002] With the wide application of asphalt mixture pavement structure in the field of high-grade highways, the problems of its durability and early failure of pavement structure have become increasingly prominent. The current survey results on pavement diseases show that the main disease type in low-temperature and severe cold areas is low-temperature cracking, followed by water damage, and the main disease type in high-temperature hot areas is high-temperature deformation, followed by water damage. No matter how the climate conditions are different, water damage is the main type of pavement damage, and water damage often occurs together with other disease types, develops together, and continues to deteriorate througho...

AI Technical Summary

Problems solved by technology

At present, the relevant research on the consolidation strength of the oil-stone interface has accumulated certain results. Among them, the quantitative test technology for the interface consolidation is the basis for studying the interface consolidation effect and determining the improvement plan, but there are few related studies on the interface with water. In particular, the relationship between the quantitative interfacial water and the consolidation strength of the oil-stone interface has not yet been found with relatively mature test methods and test results.

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