水稳碎石基层材料循环冷再生性能提升试验
|
摘要
针对水稳碎石基层材料在多次循环冷再生过程中出现的强度增长过快、干缩时间延长、抗水损性能衰减的问题,基于可持续冷再生理念,采用室内模拟试验模拟水稳碎石基层材料的循环冷再生过程,通过无侧限抗压强度试验、干缩试验、动水冲刷试验,对改善前后各个循环冷再生周期内的混合料性能进行研究。结果表明:采用减少水泥掺量、掺聚丙烯纤维、掺膨胀剂3种措施,水稳碎石基层混合料的力学特性、收缩特性及水稳特性均得到提高,延长了水稳旧料的使用寿命,实现可持续利用。
Aiming at the problems of excessive strength growth,prolonged drying shrinkage time and attenuation of water loss resistance of cement-stabilized macadam base material in the process of cold recycling,based on the concept of sustainable cold recycling,laboratory simulation test was used to simulate the cold recycling process of cement-stabilized macadam base material and the performance of the mixture in the cold recycling of each cycle before and after the improvement was studied by the unconfined compressive strength test,the dry shrink test and the hydrodynamic wash test.The test results show that the mechanical properties,shrinkage properties and water stability of mixtures for cement-stabilized macadam base are improved by reducing cement content,adding polypropylene fiber and adding expansion agent,which prolongs the service life of cement-stabilized macadam base and realizes sustainable utilization.
Aiming at the problems of excessive strength growth,prolonged drying shrinkage time and attenuation of water loss resistance of cement-stabilized macadam base material in the process of cold recycling,based on the concept of sustainable cold recycling,laboratory simulation test was used to simulate the cold recycling process of cement-stabilized macadam base material and the performance of the mixture in the cold recycling of each cycle before and after the improvement was studied by the unconfined compressive strength test,the dry shrink test and the hydrodynamic wash test.The test results show that the mechanical properties,shrinkage properties and water stability of mixtures for cement-stabilized macadam base are improved by reducing cement content,adding polypropylene fiber and adding expansion agent,which prolongs the service life of cement-stabilized macadam base and realizes sustainable utilization.
引文
[1]卢宇舟,夏彦博,孟力.沥青路面病害及养护维修技术[J].科技创新导报,2013(11):126.
[2]傅大宝,李玉华,刘金福.城市道路沥青路面病害调查及成因分析[J].筑路机械与施工机械化,2014,31(9):76-78.
[3]师晖军.铜黄高速公路沥青路面病害分析及大修方案设计[J].筑路机械与施工机械化,2010,27(9):60-64,69.
[4]王国锋.沥青混凝土路面早期破坏的原因及修补方法[J].筑路机械与施工机械化,2011,28(5):59-61.
[5]李向阳.高等级公路沥青路面预防性养护[J].筑路机械与施工机械化,2005,22(10):36-37.
[6]黄磊.水泥乳化沥青多次冷再生混合料的路用性能研究[J].中外公路,2013,33(5):235-238.
[7]崔钧,高雁北,胡得义.乳化沥青就地冷再生工艺[J].筑路机械与施工机械化,2006,23(10):4-6.
[8]吴超凡,曾梦澜,钟梦武,等.乳化沥青冷再生混合料设计方法试验研究[J].湖南大学学报(自然科学版),2008,35(8):19-23.
[9]马培新.就地冷再生技术的应用与发展[J].筑路机械与施工机械化,2005,22(6):31-32.
[10]樊江顺,李富清,姚琳宁.改性乳化沥青冷再生技术的发展与应用[J].筑路机械与施工机械化,2006,23(10):1-3.
[11]STIMILI A,FERROTTI G,GRAZIANI A,et al.Performance Evaluation of a Cold-recycled Mixture Containing High Percentage of Reclaimed Asphalt[J].Road Materials&Pavement Design,2013,14(S1):149-161.
[12]LEE K W,BRAYTON T E,MUELLER M,et al.Rational Mix-Design Procedure for Cold In-Place Recycling Asphalt Mixtures and Performance Prediction[J].Journal of Materials in Civil Engineering,2016,28(6):146-160.
[13]王宏,郝培文,南兵章,等.乳化沥青冷再生混合料高温稳定性研究[J].公路工程,2013,38(4):191-195.
[14]郭寅川,申爱琴,张名成,等.沥青路面复合式冷再生基层混合料路用性能影响因素[J].公路交通科技,2014,37(7):32-38.
[15]张海.沥青路面无机结合料冷再生基层疲劳性能研究[D].大连:大连理工大学,2013.
[16]朱唐亮,谈至明,周玉民.水泥稳定类基层材料抗冲刷性能的试验研究[J].建筑材料学报,2012,15(4):565-569.
[17]王博.半刚性基层材料抗冲刷性能研究[D].西安:长安大学,2010.
[18]沙爱民,胡力群.半刚性基层材料抗冲刷性能试验方法研究[J].中国公路学报,2002,15(2):7-10.
[19]安春英.水泥稳定碎石基层混合料抗冲刷性影响因素分析[J].中外公路,2012,32(1):268-271.
[2]傅大宝,李玉华,刘金福.城市道路沥青路面病害调查及成因分析[J].筑路机械与施工机械化,2014,31(9):76-78.
[3]师晖军.铜黄高速公路沥青路面病害分析及大修方案设计[J].筑路机械与施工机械化,2010,27(9):60-64,69.
[4]王国锋.沥青混凝土路面早期破坏的原因及修补方法[J].筑路机械与施工机械化,2011,28(5):59-61.
[5]李向阳.高等级公路沥青路面预防性养护[J].筑路机械与施工机械化,2005,22(10):36-37.
[6]黄磊.水泥乳化沥青多次冷再生混合料的路用性能研究[J].中外公路,2013,33(5):235-238.
[7]崔钧,高雁北,胡得义.乳化沥青就地冷再生工艺[J].筑路机械与施工机械化,2006,23(10):4-6.
[8]吴超凡,曾梦澜,钟梦武,等.乳化沥青冷再生混合料设计方法试验研究[J].湖南大学学报(自然科学版),2008,35(8):19-23.
[9]马培新.就地冷再生技术的应用与发展[J].筑路机械与施工机械化,2005,22(6):31-32.
[10]樊江顺,李富清,姚琳宁.改性乳化沥青冷再生技术的发展与应用[J].筑路机械与施工机械化,2006,23(10):1-3.
[11]STIMILI A,FERROTTI G,GRAZIANI A,et al.Performance Evaluation of a Cold-recycled Mixture Containing High Percentage of Reclaimed Asphalt[J].Road Materials&Pavement Design,2013,14(S1):149-161.
[12]LEE K W,BRAYTON T E,MUELLER M,et al.Rational Mix-Design Procedure for Cold In-Place Recycling Asphalt Mixtures and Performance Prediction[J].Journal of Materials in Civil Engineering,2016,28(6):146-160.
[13]王宏,郝培文,南兵章,等.乳化沥青冷再生混合料高温稳定性研究[J].公路工程,2013,38(4):191-195.
[14]郭寅川,申爱琴,张名成,等.沥青路面复合式冷再生基层混合料路用性能影响因素[J].公路交通科技,2014,37(7):32-38.
[15]张海.沥青路面无机结合料冷再生基层疲劳性能研究[D].大连:大连理工大学,2013.
[16]朱唐亮,谈至明,周玉民.水泥稳定类基层材料抗冲刷性能的试验研究[J].建筑材料学报,2012,15(4):565-569.
[17]王博.半刚性基层材料抗冲刷性能研究[D].西安:长安大学,2010.
[18]沙爱民,胡力群.半刚性基层材料抗冲刷性能试验方法研究[J].中国公路学报,2002,15(2):7-10.
[19]安春英.水泥稳定碎石基层混合料抗冲刷性影响因素分析[J].中外公路,2012,32(1):268-271.