多孔混凝土板改造直立硬质护岸的水质改善效果
发布时间：2019-08-04 14:51
【摘要】：针对河道直立式硬质护岸普遍存在的环境问题,以预制多孔混凝土板为生态改造的基质,对6种不同孔隙率、骨料粒径及水灰比的多孔混凝土进行了抗压强度与静态水质净化试验;采用河道模拟装置测定了预制板在水体流动状态下对水质的改善效果。试验结果表明,当设计孔隙率为30%、骨料粒径为10~20 mm、水灰比为0.30时,多孔混凝土的抗压强度和水质净化效果较好。预制多孔混凝土板对水中污染物具有良好的持续性去除效果,在秋季当水力停留时间为6 d时,对河水中COD_(Mn)、NH_3-N、TN和TP的去除率分别可达到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，
本文编号：2522997
[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，
本文编号：2522997
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