High-property Cold Patch Asphalt Mixture Preparation And Application Technology In Low Temperature

Cold patch asphalt mixture has a characteristic of repairing in low temperature condition. Though in winter, the pavement can be repaired timely. Cold patch asphalt mixture applied in road maintenance. But cold patch asphalt mixture has some defects in construction workability and water stability what restriction strongly on applying widely.The paper using finite element software ANSYS numerical simulation of the asphalt concrete pavement structure. In the light of the relative position of tyre load and repaired structure,the paper design 5 conditions for stress and stain response regularity. Proposing modulus parameter for cold patch asphalt mixture for construction technology control in key position analysis.Experimental study of cold patch asphalt binder is based on three main indexes to determine the optimum component. Combining with viscidity test prepare for good workability cold patch asphalt mixture. By the work of low-temperature, initial strength, formed strength, water stability to determine the component ratio of cold patch asphalt binder. Designing mixture optimum gradation and calculating the optimum asphalt content and study the best amount of resin for developing the high performance cold patch mixture working in-10℃. After developing the high performance cold patch asphalt mixture,constructing in outdoor and proposing constructing process probe into cracks and pits. Papers aimed at preparing and constructing of the low temperature high performance cold patch asphalt mixture and proposing repair process.