TY - GEN
T1 - Creep properties of cementitious materials from indentation testing
T2 - 9th International Conference on Creep, Shrinkage, and Durability Mechanics: A Tribute to Zdenek P. Bazant, CONCREEP 2013
AU - Vandamme, M.
AU - Zhang, Q.
AU - Ulm, F. J.
AU - Le Roy, R.
AU - Zuber, B.
AU - Gartner, E.
AU - Termkhajornkit, P.
PY - 2013/1/1
Y1 - 2013/1/1
N2 - Concrete creeps, and this creep must be well characterized and modeled to properly design civil engineering infrastructures. Here, we present some results on the creep properties of cementitious materials obtained by using the indentation technique. Firstly, we show that minutes-long microindentations on cement paste yield a quantitative measurement of their long-term logarithmic creep kinetics, which can be used to predict the rate of long-term creep of concrete. Then, by performing microindentations, we study the effect of relative humidity on the long-term creep properties of hydrated C3S samples, compacted samples made of pure C-S-H, and compacted samples made of pure CH. The last part is dedicated to a study by nanoindentation of the creep properties of C-S-H phases directly within a hydrated cement paste. We identify scaling relations independent of mix proportion and heat treatment, which we can explain by drawing a thorough analogy between the mechanical behavior of C-S-H and that of clays.
AB - Concrete creeps, and this creep must be well characterized and modeled to properly design civil engineering infrastructures. Here, we present some results on the creep properties of cementitious materials obtained by using the indentation technique. Firstly, we show that minutes-long microindentations on cement paste yield a quantitative measurement of their long-term logarithmic creep kinetics, which can be used to predict the rate of long-term creep of concrete. Then, by performing microindentations, we study the effect of relative humidity on the long-term creep properties of hydrated C3S samples, compacted samples made of pure C-S-H, and compacted samples made of pure CH. The last part is dedicated to a study by nanoindentation of the creep properties of C-S-H phases directly within a hydrated cement paste. We identify scaling relations independent of mix proportion and heat treatment, which we can explain by drawing a thorough analogy between the mechanical behavior of C-S-H and that of clays.
UR - https://www.scopus.com/pages/publications/84887348899
U2 - 10.1061/9780784413111.005
DO - 10.1061/9780784413111.005
M3 - Conference contribution
AN - SCOPUS:84887348899
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 - 48
EP - 61
BT - Mechanics and Physics of Creep, Shrinkage, and Durability of Conrete
PB - American Society of Civil Engineers (ASCE)
Y2 - 22 September 2013 through 25 September 2013
ER -