摘要
研究了锂渣、硅灰、羟丙基甲基纤维素以及水性环氧树脂4种增稠材料对C20卵石型透水混凝土工作性能、透水性能及力学性能的影响。研究表明:硅灰效果最优,能明显改善卵石型透水混凝土拌合物的包裹性及粘结性,且掺量为5%时,透水混凝土透水系数达1.2mm/s,28d抗折强度与抗压强度分别达到3.8MPa与39.4MPa。
The effect of different thickening materials on work performance,pervious performance and mechanical properties of C20 artificial pebble pervious concrete are studied,which contained lithium slag,silica fume,HPMC （hydroxyl propyl methyl cellulose）,and water-borne epoxy resin.The results showed that,silica fume,which had the best water-retaining and thickening effect,could observably improve the work performance of pervious concrete,espe cially when the dosage of silica fume was 5%,permeability coefficient of the concrete was 1.2 mm/s,flexural strength of the concrete at 28 days was 3.8 MPa,compressive strength of the concrete at 28 days was 39.4 MPa.
关键词
卵石型透水混凝土
增稠材料
工作性能
透水性能
力学性能
pebble pervious concrete
thickening materials
work performance
pervious performance
mechanical properties
