基于振动拌和工艺的水泥稳定碎石混合料路用性能研究
|
摘要
为了解不同水泥剂量下水泥稳定碎石混合料的无侧限抗压强度、干缩和温缩性能、抗冲刷性能等路用性能及其变化规律,采用振动拌和、振机无振动拌和、普通静力拌和3种不同搅拌方式进行研究,然后基于试验结果对振动拌和工艺的作用机理进行了分析。结果表明:1)振动拌和工艺加大了拌和激振力,增加了水泥稳定碎石混合料的拌和均匀性;2)相比振机无振拌与普通静力拌和方式,振动拌和工艺下水泥稳定碎石混合料的无侧限抗压强度平均提高了30.8%、49.5%;振动拌和型水泥稳定碎石混合料的劈裂强度提高了46.1%;3)振动拌和工艺还能有效改善混合料干缩、温缩及抗冲刷等路用性能。
In order to understand the unconfined compressive strength,drying shrinkage,temperature shrinkage and erosion resistance of cement stabilized macadam mixtures with different cement dosages,three different mixing modes of vibro-mixing,vibrator without vibration mixing,ordinary static mixing,were studied. Then based on the test results,the mechanism of vibration mixing process is analyzed. The results show that: 1) The vibration mixing process increases the mixing excitation force and increases the mixing uniformity of the cement stabilized macadam mixture; 2) Compared with v vibrator without vibration mixing,ordinary static mixing mode,the unconfined compressive strength of the cement stabilized gravel mixture increased by 30. 8% and 49. 5% on average under the vibratory mixing technology; the splitting strength of the vibrating mixed cement stabilized gravel mixture increased by 46. 1%; 3) Vibrating mixing process can effectively improve the mix road performance such as shrinkage,temperature shrinkage and erosion resistance.
In order to understand the unconfined compressive strength,drying shrinkage,temperature shrinkage and erosion resistance of cement stabilized macadam mixtures with different cement dosages,three different mixing modes of vibro-mixing,vibrator without vibration mixing,ordinary static mixing,were studied. Then based on the test results,the mechanism of vibration mixing process is analyzed. The results show that: 1) The vibration mixing process increases the mixing excitation force and increases the mixing uniformity of the cement stabilized macadam mixture; 2) Compared with v vibrator without vibration mixing,ordinary static mixing mode,the unconfined compressive strength of the cement stabilized gravel mixture increased by 30. 8% and 49. 5% on average under the vibratory mixing technology; the splitting strength of the vibrating mixed cement stabilized gravel mixture increased by 46. 1%; 3) Vibrating mixing process can effectively improve the mix road performance such as shrinkage,temperature shrinkage and erosion resistance.
引文
[1]沈金安.沥青及沥青混合料的路用性能[M].北京:人民交通出版社,2001.
[2]刘大彬.高速公路半刚性基层沥青路面养护维修方案选择研究[D].西安:长安大学,2013.
[3]沈金安.高速公路沥青路面早期损坏分析与防治对策[M].北京:人民交通出版社,2004.
[4]白鹏飞.半刚性基层沥青路面病害分析及防治研究[D].郑州:郑州大学,2016.
[5]杨涛.半刚性基层沥青路面反射裂缝的产生机理及其防治措施[D].武汉:武汉理工大学,2005.
[6]王笑风.高速公路半刚性基层沥青路面预防性养护体系研究[D].西安:长安大学,2007.
[7]王卫中,冯忠绪.二次搅拌工艺对混凝土性能影响的试验研究[J].混凝土,2006(4):40-42.
[8]程毅,齐永超,吕文军.水泥稳定碎石串联式双拌缸两级拌合施工的研究与应用[J].辽宁省交通高等专科学校学报,2013,15(5):25-29.
[9]李頔,蒋应军,任皎龙.基于振动法的抗疲劳断裂水泥稳定碎石强度标准[J].建筑材料学报,2013,16(2):276-283.
[10]张良奇,孔鲜宁,冯忠绪.水泥稳定碎石振动搅拌装置的研制及工业试验[J].广西大学学报(自然科学版),2015(5):1155-1161.
[11]苟静波.基于振动法的水泥稳定碎石级配设计及路用性能研究[D].西安:长安大学,2013.
[12]冯建生.水泥稳定碎石基层耐久抗裂的振动搅拌技术的研究与应用[D].西安:长安大学,2015.
[13]李汝凯,落桑慈成,王火明,等.振动搅拌水泥稳定砂砾强度性能对比研究[J].重庆交通大学学报(自然科学版),2017,36(11):33-36.
[14]徐周聪,但路昭,吕少辉,等.基于振动拌和工艺的水泥稳定碎石混合料强度及拌和均匀性分析[J].公路交通技术,2017,33(6):4-8.
[2]刘大彬.高速公路半刚性基层沥青路面养护维修方案选择研究[D].西安:长安大学,2013.
[3]沈金安.高速公路沥青路面早期损坏分析与防治对策[M].北京:人民交通出版社,2004.
[4]白鹏飞.半刚性基层沥青路面病害分析及防治研究[D].郑州:郑州大学,2016.
[5]杨涛.半刚性基层沥青路面反射裂缝的产生机理及其防治措施[D].武汉:武汉理工大学,2005.
[6]王笑风.高速公路半刚性基层沥青路面预防性养护体系研究[D].西安:长安大学,2007.
[7]王卫中,冯忠绪.二次搅拌工艺对混凝土性能影响的试验研究[J].混凝土,2006(4):40-42.
[8]程毅,齐永超,吕文军.水泥稳定碎石串联式双拌缸两级拌合施工的研究与应用[J].辽宁省交通高等专科学校学报,2013,15(5):25-29.
[9]李頔,蒋应军,任皎龙.基于振动法的抗疲劳断裂水泥稳定碎石强度标准[J].建筑材料学报,2013,16(2):276-283.
[10]张良奇,孔鲜宁,冯忠绪.水泥稳定碎石振动搅拌装置的研制及工业试验[J].广西大学学报(自然科学版),2015(5):1155-1161.
[11]苟静波.基于振动法的水泥稳定碎石级配设计及路用性能研究[D].西安:长安大学,2013.
[12]冯建生.水泥稳定碎石基层耐久抗裂的振动搅拌技术的研究与应用[D].西安:长安大学,2015.
[13]李汝凯,落桑慈成,王火明,等.振动搅拌水泥稳定砂砾强度性能对比研究[J].重庆交通大学学报(自然科学版),2017,36(11):33-36.
[14]徐周聪,但路昭,吕少辉,等.基于振动拌和工艺的水泥稳定碎石混合料强度及拌和均匀性分析[J].公路交通技术,2017,33(6):4-8.