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

UR - http://www.scopus.com/inward/citedby.url?scp=84887346928&partnerID=8YFLogxK

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 -