TY - GEN
T1 - Early-age cracking resistance of repair cement mortar with copolymer powder and fibers
AU - Yang, Wencui
AU - Cai, Xiaoping
AU - Ge, Yong
AU - Yuan, Jie
AU - Zhou, Dengling
N1 - Publisher Copyright:
© 2016 Taylor & Francis Group, London.
PY - 2016
Y1 - 2016
N2 - Cement mortars used for repairing concrete barriers, on which surface scaling deterioration due to deicer salts and freeze-thaw have occurred, are required to have good cracking resistance and durability. In this paper, the effect of dispersible copolymer powder, polyacrylonitrile fibers and basalt fibers on the consistency, strength, cracking resistance of cement mortars at early age and scaling resistance were studied. The results showed that adding copolymer powder and fibers improved the cracking resistance of mortars but decreased the consistency slightly. Copolymer powder reduced the compressive strength but increased the flexural strength at 28 days. The strength of mortars with polyacrylonitrile fibers reduced at early age but increased at 28 days, while basalt fibers or the hybrid of two fibers improved the strength from the early age to 28 days. Adding copolymer powder or polyacrylonitrile fibers improved the scaling resistance of mortars, and they were more effective working with air entrainment.
AB - Cement mortars used for repairing concrete barriers, on which surface scaling deterioration due to deicer salts and freeze-thaw have occurred, are required to have good cracking resistance and durability. In this paper, the effect of dispersible copolymer powder, polyacrylonitrile fibers and basalt fibers on the consistency, strength, cracking resistance of cement mortars at early age and scaling resistance were studied. The results showed that adding copolymer powder and fibers improved the cracking resistance of mortars but decreased the consistency slightly. Copolymer powder reduced the compressive strength but increased the flexural strength at 28 days. The strength of mortars with polyacrylonitrile fibers reduced at early age but increased at 28 days, while basalt fibers or the hybrid of two fibers improved the strength from the early age to 28 days. Adding copolymer powder or polyacrylonitrile fibers improved the scaling resistance of mortars, and they were more effective working with air entrainment.
UR - https://www.scopus.com/pages/publications/85015043150
M3 - 会议稿件
AN - SCOPUS:85015043150
SN - 9781138030084
T3 - Concrete Solutions - Proceedings of Concrete Solutions, 6th International Conference on Concrete Repair, 2016
SP - 325
EP - 332
BT - Concrete Solutions - Proceedings of Concrete Solutions, 6th International Conference on Concrete Repair, 2016
A2 - Sideris, Kosmas
A2 - Papayianni, Ioanna
A2 - Grantham, Michael G.
PB - CRC Press/Balkema
T2 - 6th International Conference on Concrete Repair, 2016
Y2 - 20 June 2016 through 23 June 2016
ER -