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 , an eco-friendly low-carbon coal gangue pervious concrete (CGPC) was prepared with coal-gangue aggregates (CGAs) and solid waste-based sulfoaluminate cement (WSAC) as binders.
8 citations
Patent•
07 Sep 2016
TL;DR: In this article, the authors proposed a pervious concrete consisting of 12-15% of ash concrete, 75-80% of coarse aggregate, 5-10% of a water corrosion inhibitor, 1-2% of an active admixture, 0.3-0.5% of re-dispersible emulsion powder and 0.02% of cellulose ether.
Abstract: The invention provides long-acting high-permeability pervious concrete which has a long-term high permeable rate and a high anti-clogging rate. The pervious concrete comprises the following components in percentage by weight: 12-15% of ash concrete, 75-80% of a coarse aggregate, 5-10% of a water corrosion inhibitor, 1-2% of an active admixture, 0.3-0.5% of re-dispersible emulsion powder, 0.01-0.02% of cellulose ether and 0.2-0.3% of a water reducer, wherein the water corrosion inhibitor is prepared by uniformly mixing granular alum of which the particle size is 5-8mm and silicon phosphorus crystals according to a ratio of 1:(2-4) and then uniformly spraying a mixture of VAE emulsion, cement and water on particle surfaces, and the coarse aggregate is broken stones of which the particle size is 5-15mm. The pervious concrete provided by the invention adopts the combination of the water corrosion inhibitor and meta-kaolin to replace part of the coarse aggregate and cement so as to ensure the strength that the concrete should have, and utilizes the composition of the alum and silicon phosphorus crystals which greatly differ in water solubility as a corrosion inhibitor, and obtains a high initial porosity and a lasting pervious effect by virtue of the combination of rapid dissolution of the album and slow dissolution of the silicon phosphorus crystals.
8 citations
Dissertation•
18 Jan 2010
8 citations
23 Nov 2012
TL;DR: In this paper, a pervious concrete slab loaded by both an 80 kN dual wheel axle and, to simulate a light vehicle, a 22 kN single wheel axle was used as the surface layer for light traffic pavement by carrying out a laboratorial analysis in order to better understand the mechanical and hydraulic behavior of three coarse aggregate gradation mixtures.
Abstract: The main goal of this research was to study the pervious concrete material as the surface layer for light traffic pavement by carrying out a laboratorial analysis in order to better understand the mechanical and hydraulic behavior of three different coarse aggregate gradation mixtures. Besides that, it was applied a Finite Element Analysis in order to identify the pervious concrete behavior when loaded by different vehicle loads by using the EverFE Software The mechanical characterization was developed by evaluating the tests results of flexural strength, split tensile strength, compressive strength, Young’s Modulus and the non-destructive ultrasonic test. The hydraulic conductivity was measured using a constant head permeameter. In order to carry out the mechanistic analysis, it was considered a pervious concrete slab loaded by both an 80 kN dual wheel axle, and, to simulate a light vehicle, a 22 kN single wheel axle. The studied material has shown, considering the void ratio of 0,25, values of hydraulic conductivity around 0,14 cm/s, characterizing a material with good drenability characteristics. Besides that, it presented a flexural strength of 2,1 MPa and Young’s Modulus of 15.000 MPa, reaching the half of the values commonly used in regular concretes for pavements. By using the mechanistic analysis, it was possible to assess that this specific studied pervious concrete has enough strength to be used as the surface layer of pavements loaded by lightweight vehicles.
8 citations
01 Jun 2007
TL;DR: In this paper, the performance of pervious concrete at sites where it has been in use for several years is explored, including the wear and infiltration of a Pervious Concrete roadway shoulder.
Abstract: This report is part one of a four part report that explores the performance of pervious concrete at sites where it has been in use for several years. The reports 1. examine infiltration rates for eight pervious concrete parking lots and their subsoils; 2. investigate pervious concrete construction and maintenance techniques; 3. review the compressive strength of pervious concrete compared to conventional concrete; and 4. evaluate the wear and infiltration of a pervious concrete roadway shoulder.
8 citations