Effect of high–intensity sustained triaxial stresses on the mechanical properties of plain concrete

Author:

Taliercio A. L. F.1,Berra M.1,Pandolfi A.1

Affiliation:

1. Politecnico di Milano ENEL/Ricerca/PIS

Abstract

An experimental research programme was carried out to investigate the effects of high–intensity prolonged triaxial stresses on the strength and stiffness properties of concrete. The specimens tested were subjected to constant stresses equal to 90 or 95% of the failure stress deviator under monotonic loading in different deviatoric planes. The stiffness properties of the specimens were evaluated at different time intervals. The decrease in shear modulus was taken as a measure of the creep–induced damage. The specimens which did not fail at constant stress within five days were unloaded and monotonically reloaded to failure. For the specimens tested at the lower stress, damage tends to stabilize after the early stage at constant load, whereas, for the tests performed at the higher stress, damage seems to keep on increasing for the entire duration of the creep test. The strength of the specimens surviving the creep tests was found to increase moderately with respect to the control samples, with the failure envelope of the material being dependent on the hydrostatic creep stress.

Publisher

Thomas Telford Ltd.

Subject

General Materials Science,Building and Construction,Civil and Structural Engineering

Cited by 9 articles. 订阅此论文施引文献 订阅此论文施引文献,注册后可以免费订阅5篇论文的施引文献,订阅后可以查看论文全部施引文献

1. An improved Lubliner strength model based on Ottosen failure criterion for concrete under multiaxial stress state;Structural Concrete;2021-11-02

2. Revisiting the dynamic compressive behavior of concrete-like materials;International Journal of Impact Engineering;2012-11

3. Strength and damage of concrete under high triaxial loading;European Journal of Environmental and Civil Engineering;2010-06

4. Strength and damage of concrete under high triaxial loading;EUR J ENVIRON CIV EN;2010

5. Effect of the water/cement ratio on concrete behavior under extreme loading;International Journal for Numerical and Analytical Methods in Geomechanics;2009-12-10

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