新型温拌复合改性橡胶沥青及其路用性能
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摘要
针对目前温拌橡胶沥青混合料低温性能、抗水损害能力较差的现状,文中基于复合改性的方法提出一种新型的温拌复合改性橡胶沥青,通过黏度、针入度、软化点、延度等试验评价其温拌效果、基本性能,同时以马歇尔试验、车辙试验、冻融劈裂、低温抗裂性、小梁弯曲、蠕变等室内试验评价其混合料的路用性能,与橡胶沥青和传统温拌橡胶沥青进行对比。试验结果表明:新型温拌复合改性橡胶沥青的温拌效果良好,混合料具有优良的路用性能,各项性能均优于橡胶沥青混合料,同时极大地改善了温拌橡胶沥青的低温性能和水稳定性。
Aiming at the current situations of warm-mixed rubber asphalt mixture in terms of poor temperature performance and poor water damage resistance,in this paper a new type of temperaturecomposite compound modified rubber asphalt is proposed based on the composite modification method,whose warm mixing effect and basic performance are evaluated through the tests of viscosity,penetration,softening point and elongation.At the same time,Marshall test,rutting test,freezing and thawing,low temperature crack resistance,trabecular bending,creep and other laboratory tests are conducted to evaluate the road performance of the mixture.The new-type asphalt mixture is compared with the rubber asphalt and traditional warm-mixed rubber asphalt.The test results show that:the new warm mixed compound modified rubber asphalt has a good warm mixing effect with extraordinary road performance,and its properties are better than the rubber asphalt mixture,and at the same time it can improve the low temperature performance and water stability.
Aiming at the current situations of warm-mixed rubber asphalt mixture in terms of poor temperature performance and poor water damage resistance,in this paper a new type of temperaturecomposite compound modified rubber asphalt is proposed based on the composite modification method,whose warm mixing effect and basic performance are evaluated through the tests of viscosity,penetration,softening point and elongation.At the same time,Marshall test,rutting test,freezing and thawing,low temperature crack resistance,trabecular bending,creep and other laboratory tests are conducted to evaluate the road performance of the mixture.The new-type asphalt mixture is compared with the rubber asphalt and traditional warm-mixed rubber asphalt.The test results show that:the new warm mixed compound modified rubber asphalt has a good warm mixing effect with extraordinary road performance,and its properties are better than the rubber asphalt mixture,and at the same time it can improve the low temperature performance and water stability.
引文
[1]何亮,黄晓明,马涛.有机降粘剂温拌橡胶沥青的制作工序研究[J].公路交通科技,2013,30(3):13-16.
[2]杨志方,孙文州,鞠英明,等.温拌橡胶沥青混合料路面技术试验研究[J].中国市政工程,2011,2(1):75-77.
[3]蔡骏,葛折圣,袁俊.温拌橡胶沥青混合料施工温度的确定[J].科学技术与工程,2011,11(6):1386-1404.
[4]杜旭斌,温拌橡胶沥青混合料试验研究[J].公路工程,2013,38(3):83-85.
[5]王伟明,吴旷怀,孟繁冰,等.Sasobit对温拌橡胶沥青及沥青混合料高温性能影响[J].广州大学学报:自然科学版,2012,11(3):65-69.
[6]JTG E20-2011公路工程沥青及沥青混合料试验规程[S].
[7]张肖宁,王绍怀,吴旷怀,等.沥青混合料组成设计的CAVF法[J].公路,2001,(12):17-20.
[2]杨志方,孙文州,鞠英明,等.温拌橡胶沥青混合料路面技术试验研究[J].中国市政工程,2011,2(1):75-77.
[3]蔡骏,葛折圣,袁俊.温拌橡胶沥青混合料施工温度的确定[J].科学技术与工程,2011,11(6):1386-1404.
[4]杜旭斌,温拌橡胶沥青混合料试验研究[J].公路工程,2013,38(3):83-85.
[5]王伟明,吴旷怀,孟繁冰,等.Sasobit对温拌橡胶沥青及沥青混合料高温性能影响[J].广州大学学报:自然科学版,2012,11(3):65-69.
[6]JTG E20-2011公路工程沥青及沥青混合料试验规程[S].
[7]张肖宁,王绍怀,吴旷怀,等.沥青混合料组成设计的CAVF法[J].公路,2001,(12):17-20.