Study on Influence of Cooling Mode on the Permeability of High Temperature Damaged Concrete

DOI

10.2991/ecae-17.2018.46How to use a DOI?

Keywords

component; cooling mode; after exposure to high temperature; penetration coefficient

Abstract

Two experiments of capillary suction and chloride penetration were carried out on the concrete specimens after exposure to natural cooling and spray water-cooling, and absorption coefficient and permeability coefficient were used to estimate the combining influence of cooling mode and temperature. The results show that high temperature cause severe degradation both the capillary suction and chloride ion resistance of concrete. Owing to short spray cooling time, the large temperature difference between inside and outside of concrete and large temperature stress, which accelerate progressive ion penetrating from outside. Then water absorption coefficient and chloride ion content in concrete surface is significantly greater than that of exposure to natural cooling. Therefore, spray water cooling mode has worse effect on permeability of concrete damaged in high temperature.

Copyright

© 2018, the Authors. Published by Atlantis Press.

Open Access

This is an open access article distributed under the CC BY-NC license (http://creativecommons.org/licenses/by-nc/4.0/).

Download article (PDF)

TY  - CONF
AU  - Qing Su
AU  - Kunfa Li
PY  - 2017/12
DA  - 2017/12
TI  - Study on Influence of Cooling Mode on the Permeability of High Temperature Damaged Concrete
BT  - Proceedings of the 2017 2nd International Conference on Electrical, Control and Automation Engineering (ECAE 2017)
PB  - Atlantis Press
SP  - 221
EP  - 224
SN  - 2352-5401
UR  - https://doi.org/10.2991/ecae-17.2018.46
DO  - 10.2991/ecae-17.2018.46
ID  - Su2017/12
ER  -