TY - GEN
T1 - Improved estimation of long-term relaxation function of aging concrete from its compliance function
AU - Bažant, Z. P.
AU - Hubler, M. H.
AU - Jirásek, M.
PY - 2013
Y1 - 2013
N2 - The age-adjusted effective modulus method (AAEM) is a standard ACI and CEB-fib for simplified estimates of the creep response of concrete structures. The AAEM requires the user to supply the relaxation function, R(t, t'), of the concrete to be used. This function may be obtained through numerical methods, but more easily from a simple closed-form formula. Such a formula was first presented by Bažant and Kim in 1979, but was improved in 2012 by Bažant, Hubler, and Jirásek. This paper summarizes and discusses this recent improvement to the closed-form approximation of R(t, t'), which gives a more accurate representation of the multi-decade creep.
AB - The age-adjusted effective modulus method (AAEM) is a standard ACI and CEB-fib for simplified estimates of the creep response of concrete structures. The AAEM requires the user to supply the relaxation function, R(t, t'), of the concrete to be used. This function may be obtained through numerical methods, but more easily from a simple closed-form formula. Such a formula was first presented by Bažant and Kim in 1979, but was improved in 2012 by Bažant, Hubler, and Jirásek. This paper summarizes and discusses this recent improvement to the closed-form approximation of R(t, t'), which gives a more accurate representation of the multi-decade creep.
UR - http://www.scopus.com/inward/record.url?scp=84887346928&partnerID=8YFLogxK
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U2 - 10.1061/9780784413111.052
DO - 10.1061/9780784413111.052
M3 - Conference contribution
AN - SCOPUS:84887346928
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 - 437
EP - 442
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 -