Mutual Effect of Textile Binding and Coating on the Structural Performance of TRC Beams

Journal of Materials in Civil Engineering, vol. 32

Abstract

This study investigates the mutual effects of binding and pretreatment procedure (coating) on the structural performance of textile-reinforced concrete (TRC) composite beams under flexural loading. The goal is to choose an optimal reinforcing textile configuration that yields a better design of the textile performance. The investigation was performed by correlating between the microstructural mechanism, which is associated to the textile configuration, and the macrostructural response according to various structural parameters, such as the ultimate load, the relative structural ductility, and the equivalent fracture energy. An experimental investigation is presented on four different binding types of warp-knitted structures: pillar and counterlaid tricot, characterized by relatively circular roving cross section, and plain and tricot, characterized by elliptical roving cross section. Each type was investigated in uncoated configuration and by coating with 50% styrene-butadiene rubber (SBR). In total, 32 TRC beam specimens were designed, cast, and monotonically loaded. Results demonstrated that generally the type of binding is significantly pronounced in uncoated textiles and that coating considerably improves the structural performance of all types of textile binding. It is also concluded that relatively flat and elliptical cross-sectional areas of the rovings are preferable in the case of uncoated textile, while in the case of coated textile the preferable binding configurations are the ones characterized by a relatively circular roving cross section.

Authors 4

1. Graham Perry

   Technion – Israel Institute of Technology

   Affiliation as printed

   Ph.D. Student, Faculty of Civil and Environmental Engineering, Technion—Israel Institute of Technology, Haifa 32000, Israel

2. Goezdem Dittel Aachen Ph.D. Student Institut fuer Textiltechnik of Rheinisch-Westfaelische Technische Hochschule Aachen Univ

   RWTH Aachen University

   Affiliation as printed

   Ph.D. Student, Div. of Construction Composites, Institut fuer Textiltechnik of Rheinisch-Westfaelische Technische Hochschule Aachen Univ., Otto-Blumenthal-Strasse 1, 52074 Aachen, Germany

3. Thomas Gries Aachen Professor Institut fuer Textiltechnik of Rheinisch-Westfaelische Technische Hochschule Aachen Univ

   RWTH Aachen University

   Affiliation as printed

   Professor, Institut fuer Textiltechnik of Rheinisch-Westfaelische Technische Hochschule Aachen Univ., Otto-Blumenthal-Strasse 1, 52074 Aachen, Germany

4. Yiska Goldfeld corresponding

   Technion – Israel Institute of Technology

   Affiliation as printed

   Associate Professor, Faculty of Civil and Environmental Engineering, Technion—Israel Institute of Technology, Haifa 32000, Israel (corresponding author). ORCID: