钢渣OGFC沥青混凝土堵塞性能研究
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摘要
采用钢渣代替橡胶改性OGFC中的粗集料,取代率分别为0%、25%、50%、75%和100%,通过室内渗水试验分析钢渣取代率对橡胶改性OGFC的渗透性和堵塞性能的影响规律。结果表明:OGFC的总空隙率和有效空隙率均随着钢渣取代率的增大而减小;橡胶改性OGFC的初始渗水系数与有效空隙率之间满足幂函数关系;随着堵塞物的增加,橡胶改性OGFC的渗水系数显著下降,之后基本保持不变,稳定后的渗水系数约为初始渗水系数的30%～45%,满足大于100 m/d的实际工程要求,可确保其发挥排水功能。
With the goal to study the permeability and clogging property of open graded friction course( OGFC) mixes with steel slag and rubber modified binder,the permeability test was conducted on the rubber modified OGFC specimens corresponding to 0%,25%,50%,75%, and 100%replacement of coarse aggregate by steel slag. The results show that the both the air void and effective porosity of rubber modified OGFC decrease with increasing replacement of coarse aggregate by steel slag. A power function can capture the relationship between the initial permeability of rubber modified OGFC and the effective porosity. With the increase of the clogging sand,the permeability of rubber modified OGFC decreases significantly and then remains stable. The permeability coefficient of rubber modified OGFC at the stable stage is about 30% ～ 45% of the initial one. Moreover, the stable permeability coefficient can meet the practical requirement that the permeability coefficient should be greater than 100 m/d,which ensures the drainage function of the rubber modified OGFC with steel slag.
With the goal to study the permeability and clogging property of open graded friction course( OGFC) mixes with steel slag and rubber modified binder,the permeability test was conducted on the rubber modified OGFC specimens corresponding to 0%,25%,50%,75%, and 100%replacement of coarse aggregate by steel slag. The results show that the both the air void and effective porosity of rubber modified OGFC decrease with increasing replacement of coarse aggregate by steel slag. A power function can capture the relationship between the initial permeability of rubber modified OGFC and the effective porosity. With the increase of the clogging sand,the permeability of rubber modified OGFC decreases significantly and then remains stable. The permeability coefficient of rubber modified OGFC at the stable stage is about 30% ～ 45% of the initial one. Moreover, the stable permeability coefficient can meet the practical requirement that the permeability coefficient should be greater than 100 m/d,which ensures the drainage function of the rubber modified OGFC with steel slag.
引文
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[13]李波,孟繁宇,李淑明,等.开级配抗滑磨耗层材料堵塞行为和疏通方法[J].华东交通大学学报,2013,30(4):69-74.
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[15]李伟,郎雷.钢渣沥青混凝土渗透、压缩及耐久性试验研究[J].科学技术与工程,2017,17(11):315-321.
[16] JTG F40-2017,公路沥青路面施工技术规范[S].
[17] JTG E20-2011,公路工程沥青及沥青混合料试验规程[S].
[2]康爱红,徐雪玲,寇长江.基于改进测试方法的透水沥青混合料空隙阻塞试验研究[J].公路工程,2017,42(5):102-105.
[3]冯新军,郝培文,查旭东.开级配沥青稳定碎石基层混合料设计方法研究[J].武汉理工大学学报,2009,31(17):57-61.
[4]向环丽,苏涛.再生排水级配沥青混合料抗水损害性能评估[J].公路工程,2015,40(3):70-75,79.
[5]刘凯,徐晓美,张磊,等.动态荷载作用下半刚性沥青路面动力响应研究[J].森林工程,2019,35(2):82-86.
[6] Deo O,Sumanasooriya M,Neithalath N. Permeability Reduction in Pervious Concretes Due to Clogging:Experiments and Modeling[J]. Journal of Materials in Civil Engineering,2010,22(7):741-751.
[7] Suresha S N,Varghese G,Shankar A U R. Laboratory and theoretical evaluation of clogging behaviour of porous friction course mixes[J]. International Journal of Pavement Engineering,2010,11(1):61-70.
[8] Charbeneau R J,Klenzendorf J B,Barrett M E. Methodology for Determining Laboratory and In-Situ Hydraulic Conductivity of Asphalt Permeable Friction Course[J]. Journal of Hydraulic Engineering,2011,137(1):15-22.
[9] Sansalone J,Kuang X,Ying G,et al. Filtration and clogging of permeable pavement loaded by urban drainage[J]. Water Research,2012,46(20):6763-74.
[10] Kayhanian M,Anderson D,Harvey J T,et al. Permeability measurement and scan imaging to assess clogging of pervious concrete pavements in parking lots[J]. Journal of Environmental Management,2012,95(1):114-123.
[11] Coleri E,Kayhanian M,Harvey J T,et al. Clogging evaluation of open graded friction course pavements tested under rainfall and heavy vehicle simulators[J]. Journal of Environmental Management,2013,129(18):164-172.
[12]魏亚,梁思明,吴泽弘.徐变对水泥路面板湿度翘曲及应力影响研究[J].工程力学,2017,34(10):106-115.
[13]李波,孟繁宇,李淑明,等.开级配抗滑磨耗层材料堵塞行为和疏通方法[J].华东交通大学学报,2013,30(4):69-74.
[14]朱云奇,曹海利.级配对OGFC沥青混合料抗阻塞性能的影响研究[J].公路交通科技(应用技术版),2014,10(9):180-182,186.
[15]李伟,郎雷.钢渣沥青混凝土渗透、压缩及耐久性试验研究[J].科学技术与工程,2017,17(11):315-321.
[16] JTG F40-2017,公路沥青路面施工技术规范[S].
[17] JTG E20-2011,公路工程沥青及沥青混合料试验规程[S].