Pervious concrete

About: Pervious concrete is a research topic. Over the lifetime, 2920 publications have been published within this topic receiving 27720 citations. The topic is also known as: porous concrete & permeable concrete.

Fuzzy set approach to condition assessments of novel sustainable pavements in the Canadian climate

Abstract: Since the use of pervious concrete pavement structures (PCPSs) is essentially still in the trial stage in Canada, long-term and quantitative pavement condition data are not available. The existing ...

Method used for preparing simulate planting concrete from sludge

Abstract: The invention provides a method used for preparing simulate planting concrete from sludge. The method comprises following steps: large particle substances in sludge are removed, and the sludge is subjected to dehydration; the dehydrated sludge is uniformly mixed with other ingredients so as to obtain a sludge mixture; the sludge mixture is subjected to balling so as to obtain cobblestone-shaped aggregate materials with uniform size; a cementing material and the cobblestone-shaped aggregate materials are subjected to cementation moulding so as to obtain porous concrete blocks; standard curing is carried out; natural soli is distributed on a bottom layer as subbottom soil; the porous concrete blocks are dispersed on the subbottom soil; the pores of the porous concrete blocks are filled with a planting matrix; and the surfaces of the porous concrete blocks are coated with natural soil so as to obtain the simulate planting concrete. The method is capable of realizing resource utilization of sludge, avoiding a series problems caused by sludge dredging, bottom mud, and industrial sludge, is capable of reducing consumption of natural broken stone and cobble, and reducing pollution loading of river caused by rain and overland runoff slightly-polluted water.

Effect of fly ash on freeze–thaw durability of concrete in marine environment

Abstract: Deterioration of structural concrete exposed to freeze–thaw cycles is one of the most important durability problems under subzero temperature conditions. It becomes more devastating when associated with marine environment. Supplementary cementitious material such as fly ash may be used as partial replacement of cement for making more dense, less absorptive and less permeable concrete which improve freeze–thaw durability. This paper presents a part of an experimental study on the freeze–thaw effect of concrete specimens exposed to artificial seawater simulating marine environment and plain water over 360 cycles. Three different grades of concrete M38, M33 and M28, each with four different fly ash replacement level, 20, 30, 40 and 60% were used for the experimental programme. The deteriorative effects were measured by studying weight and volume change, compressive strength, permeability characteristics and rapid chloride penetration resistance of the deteriorated test specimens. the optimum amount o...

Pervious Concrete Surface Characterization to Reduce Slip-Related Falls

Abstract: This paper presents results from a unique study that employed biomechanical evaluation techniques to assess the slipping behavior of traditional and pervious concrete pavements under icy conditions. Gait motion analysis using embedded force plates, electromyography, and tracking videography were used to analyze subject mobility of on icy and wet pervious concrete. Results show that pedestrian contact pressure on pervious concrete is more than twice the pressure on traditional impervious concrete. In slippery conditions, the pervious concrete specimens had more controlled gait cycles and reduced slipping. The unique surface characteristics combined with high permeability reduces surface icing, suggesting that pervious concrete offers superior slip resistance in inclement weather.