Some remarks about chemical prestressing of FRP reinforce-ment

Abstract

In last years has been observed a new wave of interest in the research and practical use of self-stressing concrete, now in combination with various types of non-traditional reinforcement. One of the widely used types of these reinforcements is FRP bars and long fibers (textile). We connect the major problems of FRP reinforcement using as a structural reinforcement with the development of exceeding deflections as well as crack opening under service loads. One of the most effective methods for its performance enhancing is chemical pre-stressing with self-stressing concrete. When self-stressing concrete matrix combined with textile forms a new composite material, namely according to Boxing Wang et al., textile -reinforced self-stressing concrete (TRSSC). This paper presents a critical analysis of some basic assumptions of the proposed models for assessment restraint strains/self-stresses distribution and calculation method of cracking load and deflection of textile reinforced self-stressing concrete.