(TRAIS) 11. Pervious concrete is very different than other types of concrete because of its mix design, placement procedures, and curing requirements. Because pervious concrete is thicker in consistency than regular concrete, a vibrating mechanical screed is used to level it off. A pervious concrete mix differs from a conventional one in terms of the gradation of aggregates, namely, a lack of fine aggregates. In addition, supplementary cementitious materials (SCMs) such as fly ash, pozzolans (ASTM C 618), and ground-granulated blast furnace slag (ASTM C 989) may be used.
It is reported that, the 28-day compressive strength of such mixes range from 800 psi to 3,000 psi based on compressive strength testing per ASTM C39. The design he chose included colored bands utilizing color hardeners, an infield of colored and stamped concrete, and infield areas of pervious concrete. As in traditional concreting, portland cements (ASTM C 150, C 1157) and blended cements (ASTM C 595, C 1157) may be used in pervious concrete. Also, it touches on practical and scientific challenges of PCPC. Pervious concrete is a 2 part on site filter for storm water in a dry detention system consisting of the Pervious Concrete Pavement and a coarse gravel retention layer for storm water storage.
Information for this Technical Bulletin on pervious concrete is based on field experience, and was obtained from ACI 522R-06 Pervious Concrete, Design and Control of Concrete Mixtures 2002 by PCA, Pervious Concrete Pavements 2004 by PCA and NRMCA Concrete in Practice CIP 38 Pervious Concrete … Pervious concrete is delivered to the jobsite by conventional ready-mix trucks and placed within standard forms. It is typically designed to capture rainfall on the pavement surface area, but may also accept run-on from adjacent impervious areas and other hardscapes (sidewalks), rooftops, or gutters. Design of the retention layer is a site specific task and should take into account, percability and characteristics of native soils, volume of storm water anticipated, rate of flow, and duration. Pervious Concrete Mix Designs. In addition, pervious concrete mixes vary among batch Pervious Concrete Mix Design . One thing that dictates the mix design is the compaction method. Author Biography Mohammed Sonebi, Civil Engineering School of Natural and Built Environment, Queen's University Belfast. Pervious Concrete This concrete allows water to flow through to the subgrade either for storage or to allow the water the opportunity to absorb into the earth. Vernon R. Schaefer, Keijin Wang, Muhannad T. Suleiman, and John T. Kevern 9.