多空隙沥青混合料排水及抗堵塞性能研究  

Drain Ability and Anti-clogging Ability of Porous Asphalt Mixture

作　　者：王宏畅[1] 周明刚[1] 

机构地区：[1]南京林业大学土木工程学院,江苏南京210037

出　　处：《建筑材料学报》2016年第2期413-416,共4页Journal of Building Materials

基　　金：江苏省高校优秀中青年教师和校长境外研修计划;住房和城乡建设部科技研究计划项目(2011-K5-17);江苏高校优势学科建设工程资助项目

摘　　要：选用具有一定级配的细集料与水混合作为堵塞剂,借助路面渗水仪进行多空隙沥青混合料(PAM)的多周期排水堵塞试验,测定其渗水系数,研究空隙率(VV)、最大公称粒径(NMAS)、混合料级配、堵塞剂及沥青种类等对PAM排水及抗堵塞性能的影响规律.结果表明:集料最大公称粒径为1.18mm的堵塞剂比集料最大公称粒径为0.60 mm的堵塞剂更易堵塞PAM试件空隙;PAM连通空隙率越大,其排水性能越强,抗堵塞性能也越强;PAM的最大公称粒径变化对其排水能力没有明显影响,但最大公称粒径较大的PAM试件的抗堵塞性能更好;与细型级配PAM相比,粗型级配PAM的排水及抗堵塞性能更强;不同沥青种类对PAM排水及抗堵塞性能影响不大.The grading fine aggregate mixed with water was chosen as clogging agent. Water permeability coefficients were measured by using pavement surface permeameter simulation multi-cycle drainage clog- ging experiment of porous asphalts mixture（PAM）. The influence of volume of air void（VV）, normal maximum aggregate size（NMAS）, gradation, clogging agent, asphalt type on the PAM＇s drain ability and anti-clogging ability was researched. The experimental results indicate that the clogging agent with NMAS of 1.18 mm is better than that of 0.6 mm to clog the PAM; VV has an obvious influence on PAM＇s drain ability and anti-clogging ability. NMAS of the aggregate has an obvious influence on PAM＇s anti-clogging ability, with no obvious influence on the drain ability. PAM with the coarser gradation has better perform- ance on drain ability and anti-clogging ability. Asphalt type has little influence on PAM＇s drain ability and anti-clogging ability.

关 键 词：道路工程 多空隙沥青混合料 空隙率 集料最大粒径 渗水系数 堵塞剂 

分 类 号：U416.217[交通运输工程—道路与铁道工程]