基于振动搅拌的水泥稳定碎石基层性能试验
|
摘要
为了解振动搅拌下水泥稳定碎石在施工后半刚性基层的性能,采用普通搅拌设备和振动搅拌设备分别制备水泥稳定碎石并经过常规的摊铺和压实工艺后测试基层的压实度、抗压强度和摊铺高度。结果表明,在相同的摊铺条件下,普通搅拌的水泥稳定碎石在摊铺后虚铺层表面有明显的离析现象,而振动搅拌的虚铺表面无离析,集料分布均匀;在相同的压实工艺下,振动搅拌混合料的压实度高于普通搅拌,终压后振动搅拌混合料的水泥含量平均值略大于设计值且波动小,普通搅拌则波动较大。
In order to understand the performance of semi-rigid base after construction of cement stabilized macadam under vibratory mixing,ordinary mixing equipment and vibratory mixing equipment were used to prepare cement stabilized macadam,and the compactness,compressive strength and paving height of base course were tested after conventional paving and compacting process.The results show that under the same paving conditions,there is obvious segregation phenomenon on the surface of deficiency pavement after paving cement stabilized macadam with ordinary mixing,but there is no segregation on the surface of deficiency pavement with vibratory mixing,and the aggregate is well-distributed.Using the same compaction technology,the compactness of vibratory mixing mixture is higher than that of ordinary mixing mixture,and the average cement content of vibratory mixing mixture after final compaction is slightly larger than the designed value;the fluctuation is small comparing to ordinary mixture.
In order to understand the performance of semi-rigid base after construction of cement stabilized macadam under vibratory mixing,ordinary mixing equipment and vibratory mixing equipment were used to prepare cement stabilized macadam,and the compactness,compressive strength and paving height of base course were tested after conventional paving and compacting process.The results show that under the same paving conditions,there is obvious segregation phenomenon on the surface of deficiency pavement after paving cement stabilized macadam with ordinary mixing,but there is no segregation on the surface of deficiency pavement with vibratory mixing,and the aggregate is well-distributed.Using the same compaction technology,the compactness of vibratory mixing mixture is higher than that of ordinary mixing mixture,and the average cement content of vibratory mixing mixture after final compaction is slightly larger than the designed value;the fluctuation is small comparing to ordinary mixture.
引文
[1]邹静蓉,张治强,李涛.普通干线公路半刚性基层沥青路面破坏机理及控制措施[J].公路交通科技,2018,34(5):1-7.
[2]刘越,丁园园,王娜.高速公路改扩建项目建设现状与趋势[J].工程建设,2015,47(5):53-55.
[3]沙爱民.半刚性基层的材料特性[J].中国公路学报,2008,21(1):1-5.
[4] YOUNG S.DOH S H,BAEK K W K.Estimation of Relative Performance of Reinforced Overlaid Asphalt Concretes Against Reflection Cracking Due to Bending More Fracture[J].Construction and Building Materials,2009,23:1803-1807.
[5] RUIBO R,HIWEN L,ZHEREN W.Analysis of Semi-rigid Asphalt Pavement with Flexible Base as a Sandwich Layer[J].Material Design Construction Maintenance and Testing of Pavements,2014,25(6):155-162.
[6] FALLAH S,KHODAII A.Reinforcing Overlay to Reduce Reflection Cracking:an Experimental Investigation[J].Geotextiles and Geomembranes,2015,43(3):216-227.
[7] KHALIFA S,AL-JABRI A H,AL-SAIFY R T.Effect of Copper Slag as a Fine Aggregate on the Properties of Cement Mortars and Concrete[J].Construction and Building Materials,2011,25(2):933-938
[8] SHAHU J T,PATEL S,SENAPATI A.Engineering Properties of Copper Slag-Fly Ash-Dolime Mix and Its Utilization in the Base Course of Flexible Pavements[J].Journal of Materials in Civil Engineering,2013,25(12):1871-1879.
[9]丁俊杰.固结剂对水泥稳定土强度的影响[D].大连:大连理工大学,2016.
[10]张良奇,冯忠绪,赵利军.1m3双卧轴混凝土振动搅拌装置的试验研究[J].广西大学学报(自然科学版),2013,38(2):250-255.
[11]赵利军,张磊,冯忠绪,等.混凝土振动搅拌的合理振动参数[J].混凝土,2009(12):126-128.
[12]应荣华,黎凯,胡恒武.水泥稳定碎石搅拌方式研究[J].公路与汽运,2018(8):61-68.
[13]闫少杰,宋少民,张良奇.振动搅拌对大流动性混凝土性能的影响[J].混凝土,2017(8):152-155.
[14]刘朝阳,赵利军,李雅洁,等.振动搅拌对混凝土强度的影响[J].现代制造技术与装备,2018(10):32-35.
[15]但路昭,陈飞,陈伟,等.基于振动拌和工艺的水泥稳定碎石混合料路用性能研究[J].公路交通技术,2018,34(5):21-26.
[16]赵顺.振动搅拌与振动成型对混凝土性能指标的影响研究[D].西安:长安大学,2018.
[2]刘越,丁园园,王娜.高速公路改扩建项目建设现状与趋势[J].工程建设,2015,47(5):53-55.
[3]沙爱民.半刚性基层的材料特性[J].中国公路学报,2008,21(1):1-5.
[4] YOUNG S.DOH S H,BAEK K W K.Estimation of Relative Performance of Reinforced Overlaid Asphalt Concretes Against Reflection Cracking Due to Bending More Fracture[J].Construction and Building Materials,2009,23:1803-1807.
[5] RUIBO R,HIWEN L,ZHEREN W.Analysis of Semi-rigid Asphalt Pavement with Flexible Base as a Sandwich Layer[J].Material Design Construction Maintenance and Testing of Pavements,2014,25(6):155-162.
[6] FALLAH S,KHODAII A.Reinforcing Overlay to Reduce Reflection Cracking:an Experimental Investigation[J].Geotextiles and Geomembranes,2015,43(3):216-227.
[7] KHALIFA S,AL-JABRI A H,AL-SAIFY R T.Effect of Copper Slag as a Fine Aggregate on the Properties of Cement Mortars and Concrete[J].Construction and Building Materials,2011,25(2):933-938
[8] SHAHU J T,PATEL S,SENAPATI A.Engineering Properties of Copper Slag-Fly Ash-Dolime Mix and Its Utilization in the Base Course of Flexible Pavements[J].Journal of Materials in Civil Engineering,2013,25(12):1871-1879.
[9]丁俊杰.固结剂对水泥稳定土强度的影响[D].大连:大连理工大学,2016.
[10]张良奇,冯忠绪,赵利军.1m3双卧轴混凝土振动搅拌装置的试验研究[J].广西大学学报(自然科学版),2013,38(2):250-255.
[11]赵利军,张磊,冯忠绪,等.混凝土振动搅拌的合理振动参数[J].混凝土,2009(12):126-128.
[12]应荣华,黎凯,胡恒武.水泥稳定碎石搅拌方式研究[J].公路与汽运,2018(8):61-68.
[13]闫少杰,宋少民,张良奇.振动搅拌对大流动性混凝土性能的影响[J].混凝土,2017(8):152-155.
[14]刘朝阳,赵利军,李雅洁,等.振动搅拌对混凝土强度的影响[J].现代制造技术与装备,2018(10):32-35.
[15]但路昭,陈飞,陈伟,等.基于振动拌和工艺的水泥稳定碎石混合料路用性能研究[J].公路交通技术,2018,34(5):21-26.
[16]赵顺.振动搅拌与振动成型对混凝土性能指标的影响研究[D].西安:长安大学,2018.