Papers by Author: Jin Shan Wang

Abstract: In the adhesive postinstalled method, headed anchor is anchored into concrete by means of a high strength epoxy resin adhesive. To measure the concrete compressive strength, the metal anchor is “pulled” from the concrete. There occur four types of failure when the metal anchor is pulled out. This paper introduces the rationale of the adhesive postinstalled method to estimate the in-place concrete strength. The embedment depth and the diameter of the reaction ring are specified by experimental phenomenon and theoretical analysis.

Abstract: Reinforced concrete beams strengthened with externally bonded CFRP sheet and prestressed CFRP are analyzed in this paper. Crack developments and displacements with curvatures for different beams are analyzed. Test results show that prestressed CFRP are able to control the development of macro cracks in concrete and prestressed CFRP is an effective method to improve the toughness of concrete, reduce strengthening cost and meanwhile enhance bearing capacity of concrete beams.