Experimental study on durability of FRP entirely-wrapped concrete cylinders and FRP strip-wrapped concrete cylinders under wet-dry cycles in salt solution

Study on deformation and failure process infrared information of concrete samples in shearing testing;

The reinforcement surface corrosion states of concrete samples of nine types of technical conditions are judged by half-cell potential, A.

Permeability test is conducted to study pre-splitting exploding effects on concrete sample on the basis of radial spoke permeability theory,to draw a conclusion that coefficient of permeability shows logarithmic growth with explosive,to show power exponent reduction with radius.

, expounds the regulations of the current standards in these aspects, and puts forward some controllingmethods for the fabricatingofthe concrete specimens in the construction site.

The method is used to inverse the defects in the concrete specimens, and the location of the inversed defects agrees with that of the pre-placed.

This method is employed to analyze the static behavior of six circular concrete-filled steel tubular columns under axial-compressing loading.

Simplified analytic models for glass fiber-reinforced polymer-confined concrete circular columns;