TY - GEN
T1 - Chloride diffusion property of recycled aggregate concrete treated with water repellent agents-silane
AU - Zhu, Yaguang
AU - Dai, Jianguo
AU - Li, Qiuyi
PY - 2011/1/17
Y1 - 2011/1/17
N2 - Silane-base water repellent agents can significantly suppress the capillary water absorption of concrete and consequently improve the durability of the concrete and protects the internal steel reinforcement. This paper presents test result on chloride diffusion property of natural and recycled aggregate concrete externally and internally treated with silane-based water repellent agents based on the ASTM C1202 test method. The effects of concrete cracks on the chloride diffusion property were also investigated. After the tests, the impregnation depth of silane into the natural and recycled aggregate concrete, the total charges passing the testing samples and penetration depth of chloride during the testing period were determined. It was found that, for both cracked and uncracked concrete, externally treated natural and recycled aggregate concrete performed better than internally treated ones. The water repellent treatment method is more effective for recycled aggregate concrete than natural aggregate concrete because a deeper impregnation depth can be achieved in the former case.
AB - Silane-base water repellent agents can significantly suppress the capillary water absorption of concrete and consequently improve the durability of the concrete and protects the internal steel reinforcement. This paper presents test result on chloride diffusion property of natural and recycled aggregate concrete externally and internally treated with silane-based water repellent agents based on the ASTM C1202 test method. The effects of concrete cracks on the chloride diffusion property were also investigated. After the tests, the impregnation depth of silane into the natural and recycled aggregate concrete, the total charges passing the testing samples and penetration depth of chloride during the testing period were determined. It was found that, for both cracked and uncracked concrete, externally treated natural and recycled aggregate concrete performed better than internally treated ones. The water repellent treatment method is more effective for recycled aggregate concrete than natural aggregate concrete because a deeper impregnation depth can be achieved in the former case.
KW - Chloride penetration
KW - Concrete
KW - Crack
KW - Recycled aggregate
KW - Silane
KW - Water repellent agent
UR - http://www.scopus.com/inward/record.url?scp=78651268552&partnerID=8YFLogxK
U2 - 10.4028/www.scientific.net/AMR.168-170.755
DO - 10.4028/www.scientific.net/AMR.168-170.755
M3 - Conference article published in proceeding or book
SN - 9780878492077
T3 - Advanced Materials Research
SP - 755
EP - 761
BT - Advances in Building Materials
T2 - 2011 International Conference on Structures and Building Materials, ICSBM 2011
Y2 - 7 January 2011 through 9 January 2011
ER -