摘要
试验研究了再生粗骨料的粒径、水灰比、骨灰比和砂率四种因素对再生骨料透水性混凝土的抗压强度、有效孔隙率和透水系数三种性能指标的影响规律。结果表明:抗压强度随着骨料的粒径、水灰比和砂率的增加而增大,随着骨灰比的增大而降低;有效孔隙率随着骨灰比的增大而增大,随着粒径、砂率的增大而减小,随着水灰比的逐渐增大呈现先上升后下降的趋势;各因素对透水系数的影响与对有效孔隙率的影响规律是一样的。
The influences of four factors （ recycled coarse aggregate size, water-cement ratio, aggregate-ash ratio and sand ratio） on three performance indicators （compressive strength, effective porosity and permeability coefficient） of recycled aggregate pervious concrete were investigated. The resuits showed that the compressive strength increased with the increase of aggregate particle size, water-cement ratio and sand ratio, and decreased with the increase of aggregateash ratio. The effective porosity increased with the increase of aggregate-ash ratio, and decreased as the increase of particle size and sand ratio. The effective porosity presented a risingdeclining as the water-cement ratio increased gradually, the influences of four factors on permeability coefficients and on the effective porosity are similar.
出处
《青海大学学报（自然科学版）》
2013年第6期13-18,28,共7页
Journal of Qinghai University(Natural Science)
基金
教育部春晖计划(Z2001004)
关键词
再生骨料
透水性混凝土
抗压强度
有效孔隙率
透水系数
recycled aggregate
pervious concrete
compressive strength
effective porosity
permeability coefficient
