Experimental simulation study on pore clogging mechanism of porous pavement
Experimental simulation study on pore clogging mechanism of porous pavement
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多孔路面堵孔机理试验模拟研究
DOI：
10.1016/j.conbuildmat.2018.07.199
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发表时间：
2018-10
影响因子：
7.4
通讯作者：
Li Li
中科院分区：
文献类型：
--
作者：
Jiong Zhang;Rui She;Zhaoxia Dai;Ruiping Ming;Guodong Ma;Xinzhuang Cui;Li Li
堵塞引起的渗透率降低是多孔混凝土路面的一个主要问题。由于雨水、运动和孔隙中的积累/沉积而导致的颗粒物渗透是多孔路面堵塞的主要原因。在本研究中，为了直接观察孔隙中颗粒的内部运动和堵塞演变，我们重点关注透明聚丙烯酸钠珠的堆积而不是透水混凝土骨料。研究了地表径流颗粒进入多孔混凝土内部孔隙引起的堵塞过程，并采用可视化方法分析了多孔介质的堵塞过程。采用控制变量法研究了多孔混凝土孔隙率、水平径流速度、渗流速度和颗粒尺寸分布对堵塞随时间发展、堵塞发展速率和堵塞状态下颗粒分布的影响。结果表明，堵塞过程呈现快速堵塞、部分恢复、缓慢堵塞和堵塞稳定四个阶段。孔隙率和堵塞粒度对堵塞发展速度的影响显着。多孔混凝土的孔隙率、渗流速度、堵塞粒径均对最终堵塞过程中堵塞颗粒的分布有影响，而水平径流效应可以忽略不计。
Permeability reduction caused by clogging is a major issue with porous concrete pavements. Particulate matter infiltration owing to rainwater, movement, and accumulation/deposition in the pores is the main cause of clogging in porous pavements. In this study, in order to observe the internal movement of particles in pores and the clogging evolution directly, we focus on the accumulation of transparent sodium polyacrylate beads instead of pervious concrete aggregate. The clogging process caused by particles in surface runoff entering the internal pores of porous concrete was studied, and a visualization method was applied to analyze the clogging process in porous media. The effects of the porous concrete porosity, horizontal runoff velocity, seepage velocity, and particle size distribution on the clogging development with time, clogging development rate, and particle distribution in the clogging state were studied using the control variable method. The results demonstrate that the clogging process exhibits four stages, namely rapid clogging, partial recovery, slow clogging, and clogging stability. The effects of porosity and clogging particle size on the clogging development rate are significant. Porous concrete porosity, seepage velocity, and clogging particle size all have impacts on the distributions of clogging particle in the final clogging process, while the horizontal runoff effect can be neglected.
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DOI：
10.1061/(asce)0733-947x(2003)129:3(309
发表时间：
2003-05
期刊：
Journal of Transportation Engineering-asce
影响因子：
--
作者：
Siew‐Ann Tan;T. Fwa;Chong-Teng Han
通讯作者：
Siew‐Ann Tan;T. Fwa;Chong-Teng Han
影响因子：
7.4
作者：
Huining Xu;Yiqiu Tan;Xingao Yao
通讯作者：
Huining Xu;Yiqiu Tan;Xingao Yao
影响因子：
8.7
作者：
Kayhanian, Masoud;Anderson, Dane;Muhunthan, Balasingam
通讯作者：
Muhunthan, Balasingam
基于3D CT成像的透水混凝土渗流数值研究
影响因子：
7.4
作者：
Jiong Zhang;Guodong Ma;Jingping Ming;Xinzhuang Cui;Li Li;Huining Xu
通讯作者：
Huining Xu
影响因子：
11.4
作者：
Neithalath, Narayanan;Weiss, Jason;Olek, Jan
通讯作者：
Olek, Jan