TY - JOUR
T1 - Mechanical and durability studies on concrete containing wollastonite-fly ash combination
AU - Kalla, Pawan
AU - Misra, Anurag
AU - Gupta, Ramesh Chandra
AU - Csetenyi, Laszlo
AU - Gahlot, Vimal
AU - Arora, Amarnath
PY - 2013/3
Y1 - 2013/3
N2 - Several materials including fly ash, silica fume, metakaoline, wollastonite etc. which are either industrial wastes or naturally occurring minerals, have been investigated for making durable concrete material. Fly ash, silica fume, marble slurry etc. have been used in combination with wollastonite in cement concrete mixes for property enhancement. Huge amount of fly ash is being produced in India every year. It is expected to reach 225 million tons by 2017, creating its disposal problem which can be minimized by utilizing it in useful applications. The present investigation has been aimed to determine the influence of wollastonite-fly ash (W-FA) combination on properties of concrete such as strength, permeability, and durability over a range of water-binder (w/b) ratios and cement replacement. The microstructure and mercury intrusion porosity results of concrete mixes indicated that increased replacement levels of cement by W-FA combination (45-55%) causes some densification resulting into their enhanced mechanical and durability properties. (C) 2012 Elsevier Ltd. All rights reserved.
AB - Several materials including fly ash, silica fume, metakaoline, wollastonite etc. which are either industrial wastes or naturally occurring minerals, have been investigated for making durable concrete material. Fly ash, silica fume, marble slurry etc. have been used in combination with wollastonite in cement concrete mixes for property enhancement. Huge amount of fly ash is being produced in India every year. It is expected to reach 225 million tons by 2017, creating its disposal problem which can be minimized by utilizing it in useful applications. The present investigation has been aimed to determine the influence of wollastonite-fly ash (W-FA) combination on properties of concrete such as strength, permeability, and durability over a range of water-binder (w/b) ratios and cement replacement. The microstructure and mercury intrusion porosity results of concrete mixes indicated that increased replacement levels of cement by W-FA combination (45-55%) causes some densification resulting into their enhanced mechanical and durability properties. (C) 2012 Elsevier Ltd. All rights reserved.
KW - Water-binder ratio
KW - Durability
KW - Fly ash
KW - MICROSILICA
KW - Concrete
U2 - 10.1016/j.conbuildmat.2012.09.102
DO - 10.1016/j.conbuildmat.2012.09.102
M3 - Article
SN - 0950-0618
VL - 40
SP - 1142
EP - 1150
JO - Construction and Building Materials
JF - Construction and Building Materials
ER -