ISSN: 0149-6123
CODEN: CCAGPD
Page Count: 7

Creep of Lightweight Aggregate Concrete Under Variable Stresses
Tasdemir, MA
Visiting scholar, Northwestern University, IL

Uzunhasanolu, N
Associate prof. of civil engineering and graduate student, Faculty of Civil Engineering, Istanbul Technical University,

Akyüz, S
Associate prof. of civil engineering and graduate student, Faculty of Civil Engineering, Istanbul Technical University,

Abstract

In this work, the creep of lightweight aggregate concrete under constant stress is described by a logarithmic function of time, and the variations of the coefficients with age are experimentally determined. Using the relation thus obtained, an attempt is made to predict the creep of lightweight concrete specimens with the same composition under stepwise varying stresses, assuming a linear viscoelastic behavior. It was established that there is good agreement between the predicted and experimental values.

Keywords:
concrete, lightweight aggregate concrete, creep, time-dependent strain, stress, age of loading, logarithmic creep function, linear viscoelastic behavior, pumice lightweight aggregate, variable stresses

Paper ID: CCA10085J
DOI: 10.1520/CCA10085J
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