Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Pervious high-calcium fly ash geopolymer concrete
Highlights ► Green concrete made of green binder materials. ► Liquid alkaline to fly ash ratios and NaOH concentrations were varied in pervious geopolymer concrete (PGC) mixtures. ► High-calcium fly ash geopolymer binder enables produce PGC with satisfactory properties. ► PGC behaviors are similar to conventional pervious concrete.
Abstract This study evaluates the properties of pervious concrete made of high-calcium fly ash geopolymer binder. Pervious geopolymer concretes (PGCs) were prepared from lignite fly ash (FA), sodium silicate (NS), sodium hydroxide (NH) solution, and coarse aggregate. The FA to coarse aggregate ratio of 1:8 by weight, constant NS/NH ratio of 0.50, alkaline liquid/FA (L/A) ratios of 0.35, 0.40, and 0.45, and NH concentrations of 10, 15, and 20M were the PGC mix proportions. The curing temperature of 60°C for 48h was used to activate the geopolymerization. The results showed that the high-calcium fly ash geopolymer binder could be used to produce pervious concrete with satisfactory mechanical properties. The relationships of the density-void content, compressive strength-density, and compressive strength-void content of the PGCs were derived and found to be similar to those of conventional pervious concrete.
Pervious high-calcium fly ash geopolymer concrete
Highlights ► Green concrete made of green binder materials. ► Liquid alkaline to fly ash ratios and NaOH concentrations were varied in pervious geopolymer concrete (PGC) mixtures. ► High-calcium fly ash geopolymer binder enables produce PGC with satisfactory properties. ► PGC behaviors are similar to conventional pervious concrete.
Abstract This study evaluates the properties of pervious concrete made of high-calcium fly ash geopolymer binder. Pervious geopolymer concretes (PGCs) were prepared from lignite fly ash (FA), sodium silicate (NS), sodium hydroxide (NH) solution, and coarse aggregate. The FA to coarse aggregate ratio of 1:8 by weight, constant NS/NH ratio of 0.50, alkaline liquid/FA (L/A) ratios of 0.35, 0.40, and 0.45, and NH concentrations of 10, 15, and 20M were the PGC mix proportions. The curing temperature of 60°C for 48h was used to activate the geopolymerization. The results showed that the high-calcium fly ash geopolymer binder could be used to produce pervious concrete with satisfactory mechanical properties. The relationships of the density-void content, compressive strength-density, and compressive strength-void content of the PGCs were derived and found to be similar to those of conventional pervious concrete.
Pervious high-calcium fly ash geopolymer concrete
Tho-in, Tawatchai (Autor:in) / Sata, Vanchai (Autor:in) / Chindaprasirt, Prinya (Autor:in) / Jaturapitakkul, Chai (Autor:in)
Construction and Building Materials ; 30 ; 366-371
04.12.2011
6 pages
Aufsatz (Zeitschrift)
Elektronische Ressource
Englisch
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