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.

A review of microstructure properties of porous concrete pavement incorporating nano silica

Abstract: Microstructure properties are one of important key for the strength of porous concrete pavement. Active pozzolanic admixtures such as nano silica become interest in modern concrete technology to obtain high performance properties. The objective of this paper is to review the microstructure properties of porous concrete pavement containing nano silica. Studies have shown that nano silica can be used as cement replacement or admixture in porous concrete mixture. Lack of study conducted for the microstructure properties of porous concrete pavement. The present study has been undertaken to review the microstructure properties of porous concrete pavement incorporating nano silica. From the literature review, it can be conclude that the existing of nano scale pozzolans such as nano silica helps to achieve more dense and better microstructural packing and more impermeable cement matrix

Experimental study on the performance of pervious concrete

Abstract: With the construction of sponge city, the pervious concrete material has been developed rapidly. A high-performance pervious concrete is developed by using cement, silica fume (SF) and superplasticizer (SP). The effects of SF, SP, aggregate size, water-cement ration and aggregate-cement ratio on the permeability coefficient, compressive strength and flexural strength are studied by controlling variables, and exploring the corrosion resistance and abrasion resistance of pervious concrete. The results show that using 0.5% SP, 5% SF and small aggregate can greatly improve the strength. There is an optimum value for water-cement ratio to make the strength and permeability coefficient maximum. Compared to ordinary pervious concrete, the corrosion resistance and abrasion resistance of this pervious concrete are very good.

Graphene Oxide Modified Pervious Concrete with Fly Ash as Sole Binder

Abstract: In this study, a graphene oxide modified pervious concrete was developed by using a low-reactivity, high-calcium fly ash as sole binder, chemical activators and other admixtures. The density, void ratio, mechanical strength, infiltration rate, Young’s modulus, and degradation resistance of pervious concrete were measured against other three controlled groups. The test results indicated that the graphene oxide modified fly ash pervious concrete is comparable to the Portland cement pervious concrete. While the addition of 0.03% graphene oxide (by weight of fly ash) increased the compressive strength, split tensile strength, Young’s modulus and degradation resistance of fly ash pervious concrete noticeably, the void ratio and infiltration rate were reduced.

Comparative study of fly ash and rice husk ash as cement replacement in pervious concrete: mechanical characteristics and sustainability analysis

Abstract: Pervious concrete is a special type of concrete consisting of cement, coarse aggregate and water. Cement is a widely used raw material for construction including pervious concrete and had led to the release of huge amounts of CO2 to the environment. Therefore, there is lot of research interest in finding supplementary cementitious materials. The present study examined and compared the feasibility of using industrial waste fly ash (FA) and agricultural waste rice husk ash (RHA) for sustainable pervious concrete production. An experimental program was performed with substitution of FA and RHA contents of 5%, 10%, 15% and 20% as cement replacement and water to binder ratio of 0.3, 0.35, 0.4 and 0.45. The characteristics of pervious concrete and sustainability analysis were compared for both FA and RHA replacement with control concrete mortar. The results showed that both FA and RHA have a negative effect on permeability. The compressive strength was optimum for FA content lies between 10% and 15% replacement level and RHA content of 5% replacement level. Furthermore, the utilisation of FA and RHA decreased production cost, the total embodied energy and carbon emission, resulting in cost-effective and eco-friendly pervious concrete.

Production of water-permeable concrete

Abstract: PURPOSE:To provide a concrete pavement free from a pool in the road surface or a slope and easy to walk by using a water-permeable concrete for paving the road. CONSTITUTION:When curing a cement composition prepared by mixing inorganic granules having 1 to 10mm particle diameter and containing granules made of seashell, clay and soil, granules made of pea gravels and red mud, granules made of various burned ashes and granules made of stone powder in cement, a special inorganic curing agent composed mainly of sodium, potassium, nitrogen and boron is added thereto. Owing to the special inorganic curing agent, the surface coverage of cement is independent on the kind of the soil and water permeability is exhibited.