若干因素对多孔透水混凝土性能影响_蒋正武.pdfVIP

8 5 Vo l. 8, No . 5 2005 10 JO U RN A L OF BU IL DIN G M AT ER IAL S Oct . , 2005 : 1007 - 9629 ( 2005) 05 - 0513- 07 蒋正武, 孙振平, 王培铭 ( , 200092) : 研究了若干因素如骨料级配与粒径骨灰比水灰比外加剂及 拌工艺等对多孔 透水混凝土的空隙率透水系数与抗压强度等性能的影响. 结果表明: 骨料粒径与级配骨 灰比是影响多孔透水混凝土空隙率透水系数与抗压强度的关键因素 水灰比对多孔透水 混凝土的性能影响较小 减水剂硅灰及聚合物乳液等外加剂可改善多孔透水混凝土的性 能 水泥裹石法 拌工艺对多孔透水混凝土的透水系数影响不大, 但能使其抗压强度提 高空隙率下降. : 多孔透水混凝土 因素 空隙率 透水系数 抗压强度 : T U 52 8. 2 : A Effects of Some Factors on Properties of Porous Pervious Concrete J I A N G Zheng w u, S UN Zhe np i ng , WA N G P eimi ng ( Schoo l of M ater ials Science and Eng ineer ing, T ongji U niv ersity, Shang hai 200092, China) Abstract: Eff ect s of som e f act ors su ch as g radation and part icle size of aggr eg at e, mas s rat io of ag g regat e t o cem ent , mas s ratio of w at er t o cement, admix tures and mixing proces s on the prop er t ies of porou s perviou s concr et e( PP C) inclu ding porosity , p erm eat ion co ef ficient and com pr es sive st reng t h w er e st u died . T he result s indicat e, g radat ion and p art icle siz e of agg reg ate, m as s rat io of agg regat e t o cement are t he key f act ors af f ecting poro sit y, p ermeat ion coef f icient and com pr es sive strengt h of PPC. M ass rat io of w at er t o cem ent has m inor ef fect on pr opert ies of P PC. A d m ixt ures su ch as w at err educing admixt ure, silica f ume and poly mer latex im pro ve prop er ties of PPC. T he m ix ing pr ocess of cement p ast e encap sulating ag gregat e m et hod could im pro ve the com pres sive str engt h o f PP C and redu ce it s porosity w hile keeping its p ermeation coeff icient st a ble. Key words: poro us pervio us co ncr