TY - GEN
T1 - Measuring the chemical shrinkage of alkali-activated slag cements using the buoyancy method
AU - Cartwright, Christopher P.
AU - Rajabipour, Farshad
AU - Radlińska, Aleksandra
PY - 2013/1/1
Y1 - 2013/1/1
N2 - Recent incentives to reduce the carbon footprint of Portland cement (PC) concrete have sparked the research and development of eco-friendly products such as alkali-activated slag (AAS) concrete. AAS is a promising product, capable of developing compressive strengths comparable to PC concrete. However, its large drying and autogenous shrinkage (the latter being the focus of this paper) have impeded its marketability and use in the construction industry. The mechanisms and parameters that control the self-desiccation of AAS are relatively unknown. Chemical shrinkage, the driving force of autogenous shrinkage, has never been measured for AAS systems; however, it has been theoretically estimated to be much higher than that of PC. The first step in determining why the autogenous shrinkage of AAS is so large is to investigate its chemical shrinkage. This research focuses on proper measurement of the chemical shrinkage of AAS and the parameters that affect the results.
AB - Recent incentives to reduce the carbon footprint of Portland cement (PC) concrete have sparked the research and development of eco-friendly products such as alkali-activated slag (AAS) concrete. AAS is a promising product, capable of developing compressive strengths comparable to PC concrete. However, its large drying and autogenous shrinkage (the latter being the focus of this paper) have impeded its marketability and use in the construction industry. The mechanisms and parameters that control the self-desiccation of AAS are relatively unknown. Chemical shrinkage, the driving force of autogenous shrinkage, has never been measured for AAS systems; however, it has been theoretically estimated to be much higher than that of PC. The first step in determining why the autogenous shrinkage of AAS is so large is to investigate its chemical shrinkage. This research focuses on proper measurement of the chemical shrinkage of AAS and the parameters that affect the results.
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U2 - 10.1061/9780784413111.036
DO - 10.1061/9780784413111.036
M3 - Conference contribution
AN - SCOPUS:84887331387
SN - 9780784413111
T3 - Mechanics and Physics of Creep, Shrinkage, and Durability of Conrete: A Tribute to Zdenek P. Bazant - Proceedings of the 9th Int. Conf. on Creep, Shrinkage, and Durability Mechanics, CONCREEP 2013
SP - 308
EP - 315
BT - Mechanics and Physics of Creep, Shrinkage, and Durability of Conrete
PB - American Society of Civil Engineers (ASCE)
T2 - 9th International Conference on Creep, Shrinkage, and Durability Mechanics: A Tribute to Zdenek P. Bazant, CONCREEP 2013
Y2 - 22 September 2013 through 25 September 2013
ER -