【摘要】：針對河道直立式硬質(zhì)護(hù)岸普遍存在的環(huán)境問題,以預(yù)制多孔混凝土板為生態(tài)改造的基質(zhì),對6種不同孔隙率、骨料粒徑及水灰比的多孔混凝土進(jìn)行了抗壓強(qiáng)度與靜態(tài)水質(zhì)凈化試驗(yàn);采用河道模擬裝置測定了預(yù)制板在水體流動(dòng)狀態(tài)下對水質(zhì)的改善效果。試驗(yàn)結(jié)果表明,當(dāng)設(shè)計(jì)孔隙率為30%、骨料粒徑為10~20 mm、水灰比為0.30時(shí),多孔混凝土的抗壓強(qiáng)度和水質(zhì)凈化效果較好。預(yù)制多孔混凝土板對水中污染物具有良好的持續(xù)性去除效果,在秋季當(dāng)水力停留時(shí)間為6 d時(shí),對河水中COD_(Mn)、NH_3-N、TN和TP的去除率分別可達(dá)到49.5%、82.6%、47.4%和39.1%。
[Abstract]:In view of the common environmental problems of vertical rigid bank protection in river courses, six kinds of porous concrete with different porosity, aggregate particle size and water-cement ratio were tested for compressive strength and static water quality purification, and the effect of prefabricated slabs on water quality under the condition of water flow was measured by using prefabricated porous concrete slabs as the matrix of ecological transformation. The experimental results show that the compressive strength and water quality purification effect of porous concrete is better when the design porosity is 30% and the aggregate particle size is 10 鈮，

本文編號：2522997