Creep of concrete elements under time-varying stresses. Stress relaxation in concrete elementsdoi:10.1016/B978-0-12-818027-3.00004-0Koryun KarapetyanSpecificity of Deformation and Strength Behavior of Massive Elements of Concrete Structures in a Medium with Low Humidity...
An isotropic model for creep damage of concrete under uniaxial compression is proposed, where the combined effect of nonlinear viscous strain evolution and crack nucleation and propagation at high stress levels is considered. Strain splitting assumption is used for creep and damage contributions. Creep ...
First, the creep process of the marine clay-concrete interface can be largely decomposed into the instantaneous creep stage, the attenuation creep stage and the uniform creep stage. Second, the creep stability time and the shear creep displacement generally increase as the shear stress level ...
[8]; the second is to establish the nonlinear functional relationship between the creep responses and the stresses based on the uniaxial creep characteristic under low stress levels; the third is to establish the nonlinear creep constitutive equations of concrete under high stress levels by using ...
In this paper, combined with the concrete mix proportion of typical hydraulic engineering, creep tests of hydraulic concrete under loading/unloading with different loading ages (7, 28, and 60 days) are conducted under unified test conditions. Furthermore, the equivalent age theory is introduced to...
The existing mechanical and grouting anchors mostly use the expansion shell method to form a cavity on the borehole wall, and the cement slurry is poured to form multiple enlarged head plates, but the operation is more difficult and the diameter of the f
a comprehensive set of laboratory experiments was conducted on Gosford sandstone. The tests were performed under quasi-static and creep uniaxial compressive loadings. The single and multi-step creep tests were performed on samples with different slenderness ratios to explore the combined effect of shape...
- 《Journal of Advanced Concrete Technology》 被引量: 3发表: 2015年 Nanoindentation creep testing: Advantages and limitations of the constant contact pressure method Different loading protocols have been developed in the past to investigate the creep properties of materials using instrumented indentation ...
Creep of Concrete J.J. Brooks, in Concrete and Masonry Movements, 2015 Creep Poisson's Ratio Under uniaxial compression, creep occurs not only in the axial direction, but also in the lateral or normal directions. This is referred to as lateral creep. By analogy to elastic strains, the ratio...
accuracy.When the method is used,there is no need to implement material test of shrinkage and creep,thus it can avoid the errors that might be resulted from deducing the real shrinkage and creep of concrete under the bridge working environment through the test results obtained under standard ...