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, the effects of waste fly ash on properties of pervious concrete were studied. Fly ash was used to replace cement with equivalent volume method at different levels (3, 6, 9, and 12%).
Abstract: Pervious concretes, as sustainable pavement materials, have great advantages in addressing a number of environmental issues. Fly ash, as the industrial by-product waste, is the most commonly used as cement substitute in concrete. The objective of this paper is to study the effects of waste fly ash on properties of pervious concrete. Fly ash was used to replace cement with equivalent volume method at different levels (3%, 6%, 9%, and 12%). The control pervious concrete and fly ash modified pervious concrete were prepared in the laboratory. The porosity, permeability, compressive strength, flexural strength, and freeze–thaw resistance of all mixtures were tested. The results indicated that the addition of fly ash decreased the early-age (28 d) compressive strength and flexural strength, but the long-term (150 d) compressive strength and flexural strength of fly ash modified pervious concrete were higher than that of the early-age. The adverse effect of fly ash on freeze–thaw resistance of pervious concrete was observed when the fly ash was added. The porosity and permeability of all pervious concrete mixtures changed little with the content of fly ash due to the use of equal volume replacement method. Although fly ash is not positive to the properties of pervious concrete, it is still feasible to apply fly ash as a substitute for cement in pervious concrete.
18 citations
TL;DR: In this paper, five mixtures were made with natural and/or RAP aggregates and physical, mechanical and hydraulic (based on infiltration and clogging test) behavior was studied.
18 citations
TL;DR: In this article, the application of recycled concrete aggregates (RCA) and crushed bricks (CB) into pavement materials is an ideal waste management solution, by appropriate material design, the RCA and CB could be used...
Abstract: Application of recycled concrete aggregates (RCA) and crushed bricks (CB) into pavement materials is an ideal waste management solution. By appropriate material design, the RCA and CB could be used...
18 citations
Patent•
31 May 2017
TL;DR: The pervious concrete brick with high strength has the advantages of high compressive strength, excellent water permeability, and good frost resistance as discussed by the authors, but it is not suitable for outdoor use.
Abstract: The invention discloses a pervious concrete brick with high strength. The brick comprises the following raw materials: ordinary portland cement, broken stones, phosphogypsum, lithium slag powder, steel slag, coal ash, silica fume, iron tailing sand, metakaolin, mixed fibre, straw powder, a water reducer, poly(styrene-co-butadiene), a silicone acrylic emulsion, redispersible latex powder, macroporous resin, an epoxy resin adhesive, ethylene diamine tetra (methylene phosphonic acid) sodium, diisopropanolamine, sodium hyposulfite, calcium lignin sulphonate, and water. The pervious concrete brick with high strength has the advantages of high compressive strength, excellent water permeability, and good frost resistance.
18 citations
TL;DR: In this article, the authors presented the infiltration capacity reduction results, using the LCS permeameter, of polymer-modified porous concrete and porous asphalt surfaces in the University of Cantabria Campus parking area (Spain) 5 years after their construction.
Abstract: Porous surfaces have been used all over the world in source control techniques to minimize flooding problems in car parks. Several studies highlighted the reduction in the infiltration capacity of porous mixture surfaces after several years of use. Therefore, it is necessary to design and develop a new methodology to quantify this reduction and to identify the hypothetical differences in permeability between zones within the same car park bay due to the influence of static loads in the parked vehicles. With this aim, nine different zones were selected in order to check this hypothesis (four points under the wheels of a standard vehicle and five points between wheels). This article presents the infiltration capacity reduction results, using the LCS permeameter, of Polymer-Modified Porous Concrete (9 bays) and Porous Asphalt (9 bays) surfaces in the University of Cantabria Campus parking area (Spain) 5 years after their construction. Statistical analysis methodology was proposed for assessing the results. Significant differences were observed in permeability and reduction in infiltration capacity in the case of porous concrete surfaces, while no differences were found for porous asphalt depending on the measurement zone.
18 citations