TY - JOUR
T1 - Properties of self-consolidating concrete containing high-volume supplementary cementitious materials and nano-limestone
AU - Wang, Xin
AU - Wang, Kejin
AU - Li, Jinxin
AU - Garg, Nishant
AU - Shah, Surendra P.
N1 - Funding Information:
The authors would like to acknowledge the Oak Ridge Associated Universities (ORAU) – Tennessee Valley Authority (TVA), USA, for sponsoring the present study (Grant No. 7-22976).
PY - 2014
Y1 - 2014
N2 - In the present paper, conventional self-consolidating concrete (SCC) incorporating 40% Class F fly ash (FA) replacement for cement, and semi-flowable self-consolidating concrete (SFSCC) incorporating 40% FA and 15% metakaolin (MK) replacement for cement, with or without 1% nano-limestone (nanoLS) addition, were studied. Properties of the fresh concrete mixtures, such as air content, slump flow, and J-ring flow were tested. Properties of the hardened concretes, such as compressive strength, rapid chloride permeability, freezing–thawing resistance, and free drying shrinkage were examined. The results indicated that SCC mixture with 40% FA replacement displayed good workability and adequate compressive strength (33 MPa) at 28 days. In addition to enhancing strength (especially at early ages) and durability, MK also improved shape-holding ability of SFSCC. Addition of nanoLS further increased concrete strength and freezing–thawing resistance and reduced concrete permeability.
AB - In the present paper, conventional self-consolidating concrete (SCC) incorporating 40% Class F fly ash (FA) replacement for cement, and semi-flowable self-consolidating concrete (SFSCC) incorporating 40% FA and 15% metakaolin (MK) replacement for cement, with or without 1% nano-limestone (nanoLS) addition, were studied. Properties of the fresh concrete mixtures, such as air content, slump flow, and J-ring flow were tested. Properties of the hardened concretes, such as compressive strength, rapid chloride permeability, freezing–thawing resistance, and free drying shrinkage were examined. The results indicated that SCC mixture with 40% FA replacement displayed good workability and adequate compressive strength (33 MPa) at 28 days. In addition to enhancing strength (especially at early ages) and durability, MK also improved shape-holding ability of SFSCC. Addition of nanoLS further increased concrete strength and freezing–thawing resistance and reduced concrete permeability.
KW - Fly ash
KW - Metakaolin
KW - Nano-limestone
KW - Self-consolidating concrete
KW - Semi-flowable self-consolidating concrete
UR - http://www.scopus.com/inward/record.url?scp=84988631924&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=84988631924&partnerID=8YFLogxK
U2 - 10.1080/21650373.2014.954155
DO - 10.1080/21650373.2014.954155
M3 - Article
AN - SCOPUS:84988631924
SN - 2165-0373
VL - 3
SP - 245
EP - 255
JO - Journal of Sustainable Cement-Based Materials
JF - Journal of Sustainable Cement-Based Materials
IS - 3-4
ER -