FraMCoS 6 2007 Catania, Italy

Assessment of a tensile constitutive model considering various loading histories for early age concrete

Flexural tests were carried out under the several loading conditions, to verify a constitutive model subject to both hardening process and loading histories for early age concrete. A method of specifying the shape of a bilinear tension softening curve using…

First page of: Assessment of a tensile constitutive model considering various loading histories for early age concrete
Year 2007
File Size 292 KB
Download PDF (292 KB)

Abstract

Flexural tests were carried out under the several loading conditions, to verify a constitutive model subject to both hardening process and loading histories for early age concrete. A method of specifying the shape of a bilinear tension softening curve using a volume function produced from time-dependent changes in various material properties was proposed, with its validity being verified by comparison with test results. Then, a technique of superposing a stress-strain curve specified using the volume function for each time step was analytically verified using the Rigid-Body-Spring Model. This technique roughly reproduced the load-CMOD curves obtained from the tests, proving its validity.