Research on Design Method of Material Composition for Small Grain Size Asphalt Mixture Based on Practical Function
|Course||Road Materials Science and Engineering|
|Keywords||Small size asphalt mixture Coarse and fine aggregate boundaries sieve Repairing the road surface deformation Control road surface cracking Restore the road surface skid Construction technology Economic Benefit Analysis|
Of many economically developed areas of highway construction has entered a period of reconstruction conservation , the combined asphalt pavement early damage is more serious , urgent need of an effective conservation measures in order to improve road conditions , and to save maintenance costs . By the small size asphalt mixture forming a thin layer of asphalt overlay can be used to prevent the road continues to deteriorate attenuation performance , improve pavement smoothness , restore skid resistance of the road surface , the original road reinforcement , pavement one of the effective means of preventive maintenance . Moreover , the small size asphalt mixture also stress relief layer as the transformation of the old road or a new road surface wear layer . Therefore, in recent years has been widely used in road works . This article first, with California bearing ratio test , through dry mixed aggregate carrying capacity analysis to determine the small particle size mixes boundaries sieve size . Next in the full analysis , draw on existing gradation and mixture ratio design method based on research applicable to repair the road surface deformation control cracking of the road surface and restore the road surface skid resistance, small size asphalt mixture material composition design approach and corresponding with than the key control indicators , and related indoor performance test verification tests and material properties . Study different types of small particle size on the basis of analysis of the applicability and rotation compaction characteristics of three kinds of asphalt mixture , mix construction process . Finally , carry out analysis thin layer overlay materials costing and cost-effectiveness . Studies have shown that the small size asphalt mixture design can be used as a thin layer of different diseases Pavement Maintenance overlay material is a \the effect of the wide scope of its widely used to lay the foundation . Of small size asphalt mixture construction technology and economic analysis , to provide a reference for its promotion of applications and related technology development .