Topic
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.
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TL;DR: In this paper, a linear path function is tailored for pervious concrete and validated by an image analysis method, and the pore size distribution density is calculated and incorporated in a semi-empirical model to predict the compressive stress versus strain behavior.
Abstract: Research has been carried out linking matrix strength, total porosity, aggregate size and mean pore size of pervious concrete to its compressive strength. While matrix strength, total porosity and aggregate size are easy accessible parameters, mean pore size is derived from the pore size distribution determined using linear path function. The linear path function is tailored for pervious concrete and validated by an image analysis method. Additionally, based on the statistically extracted pore size distribution the pore size distribution density is calculated and incorporated in a semi-empirical model to predict the compressive stress versus strain behavior of pervious concrete. In this research 27 different pervious concrete series are investigated, varying in their matrix strength (from 29 MPa to 174 MPa), their aggregate to binder ratio (from 2.5 to 3.5) and their aggregate size (from 1.19 mm to 4.75 mm). Based on the coefficient of determination a good correlation between experimental and predicted compressive behavior of the pervious concrete series is achieved.
60 citations
TL;DR: In this paper, the authors analyzed the relationship between the porosity and the permeability of concrete and compared the performance of the falling head and constant head permeability tests, and presented the advantages of performing the constant-head test to assess the permeabilities of the PC.
59 citations
TL;DR: In this article, the effect of coal bottom ash (NGCBA) and non-ground granulated blast furnace slag (NGGBFS) on permeability properties regarding durability of concrete is investigated.
59 citations
TL;DR: In this article, the authors investigated the properties of pervious concrete made with air-cooling electric arc furnace slag (EAFS) as aggregates and found that perviouscrete made with EAFS aggregates had better mechanical strength and a greater permeability coefficient than that made with natural river gravels.
59 citations
TL;DR: In this article, a modification to the well-known Carman-Kozeny hydraulic conductivity model is proposed to more accurately predict the permeability of both normal and macroporous pervious concrete.
59 citations