Bond Stress Equation for Unconfined ConcreteThe purpose of this experimental work is to develop an equation for bond stress of unconfined concrete. The parameters considered in this study are content of silica fume, diameter of pull out bar and embedded length of pull out bar. Cubes and ...
K. (2012). "Uniaxial bond stress-slip relationship of reinforcing bars in concrete." Adv. Mater. Sci. Eng., 2012, 12.Hong S, Park S-K. Uniaxial Bond Stress-Slip Relationship of Reinforcing Bars in Concrete. Adv Mater Sci Eng 2012;2012:1-12....
cross sectional area of the strand B bond modulus (slope of bond stress curve in the plastic zone) h total depth of the concrete section c concrete cover d strand diameter e c (x) concrete compression strain along the x-direction
Understanding the bond behaviour between reinforcing steel and concrete under high-loading rates is becoming more and more important with increasing frequency of natural disasters, impact loadings and a threat of terrorism. This paper aims to obtain a better understanding of the material interactions bet...
Exposure of concrete structures to high temperatures leads to significant losses in mechanical and physical properties of concrete and steel reinforcement as well as the bond characteristics between them. Degradation of bond properties in fire may significantly influence the load capacity of concrete struct...
The NSM FRP strip is thought to be pulled out when the principal tensile stress of concrete on this semiconical surface exceeds the tensile strength of concrete. The method is able to consider the effect of groove spacing (i.e., the “interaction among adjacent strips” in their papers) on...
In the process of pulling out, the bar is subjected to tension whereas the surrounding concrete is in compression. In case of a beam test, both the steel and surrounding concrete are in tension. Because of the change in stress state, the results of the bond stress obtained from pull-out ...
Degradation of bond strength due to corrosion of steel strands is of great importance for serviceability of prestressed concrete structures. An analytical model is proposed to demonstrate the effect of corrosion of steel strand on reduction of bond strength. Corrosion expansion force generated by steel...
Fresh state property and the setting of concrete play a fundamental part in the overall strength. Interfaces are more susceptible to porosity and permeability, which affect the bond of the coming layer with the substrate layer [154]. The probable reason for the presence of voids is anisotropy ...
Bond strength Single and double pull-out test High strength concrete Design ultimate stress 1. Introduction Bond refers to the interaction between reinforcing steel and the surrounding concrete, which allows transferring of tensile stress from the steel into the concrete. It is the mechanism that allo...