Title:
Properties of Steam-Cured Fly Ash Concrete Using Porous Ceramic Waste Aggregate
Author(s):
Phuong Trinh Bui, Yuko Ogawa, Naoki Doi, Kenji Kawai, and Ryoichi Sato
Publication:
Symposium Paper
Volume:
303
Issue:
Appears on pages(s):
323-336
Keywords:
porous ceramic waste aggregate; fly ash; steam curing; compressive strength; pore structure; autogenous shrinkage; carbonation resistance
DOI:
10.14359/51688144
Date:
6/1/2015
Abstract:
In the present study, the effects of porous ceramic waste aggregate (PCWA) on the mechanical properties and durability of the steam-cured fly ash concrete are investigated. The replacement ratios of fly ash were 0%, 20% and 40% by mass, and those of PCWA were 0%, 10% and 20% by volume. Three kinds of curing conditions: dried after steam curing (D-Steam), sealed after steam curing (S-Steam), and sealed curing (Sealed), were used. The experimental results show that the compressive strength of the fly ash concrete with 20% replacement of PCWA increased regardless of curing conditions, and the pore volume decreased. The autogenous shrinkage of the S-Steam cured fly ash concrete was reduced significantly by using 20% replacement of PCWA. The carbonation resistance of the D-Steam cured fly ash concrete was also improved by using 10% replacement of PCWA and 40% replacement of fly ash.