Flexural Performance of Prefabricated Ultra-High-Strength Textile Reinforced Concrete (UHSTRC): An Experimental and Analytical Investigation

Egodawaththa Ralalage Kanishka Chandrathilaka,Priyan Mendis,Shanaka Kristombu Baduge,Petikirige Sadeep Madhushan Thilakarathna

doi:10.3390/buildings10040068

Egodawaththa Ralalage Kanishka Chandrathilaka, Priyan Mendis + Show 2 more

Open Access

https://doi.org/10.3390/buildings10040068

Copy DOI

Journal: Buildings	Publication Date: Apr 2, 2020
Citations: 3	License type: CC BY 4.0

Affiliation: University of Melbourne

Abstract

Textile Reinforced Concrete (TRC) is a prefabricated novel lightweight high-performance composite material that can be used as a load-bearing or non-load-bearing component of prefabricated buildings. Making TRC with Ultra-High-Strength Concrete (UHSC) (≥100 MPa) can be considered as a potential improvement method to further enhance its properties. This paper investigated the performance of Ultra-High-Strength Textile Reinforced Concrete (UHSTRC) under flexural loading. A detailed experimental program was conducted to investigate the behavior of UHSC on TRC. In the experimental program, a sudden drop in load was observed when the first crack appeared in the UHSTRC. A detailed analytical program was developed to describe and understand such behavior of UHSTRC found in experiments. The analytical program was found to be in good agreement with the experimental results and it was used to carry out an extensive parametric study covering the effects of the number of textile layers, textile material, textile mesh density, and UHSTRC thickness on the performance of UHSTRC. Using a high number of textile layers in thin UHSTRC was found to be more effective than using high-thickness UHSTRC. The high modulus textile layers effectively increase the performance of UHSTRC.

Highlights

The use of Textile Reinforced Concrete (TRC) is increasing in recent years due to its superior properties, such as its excellent load-bearing capacity, high durability, fire-resistant nature, high corrosion resistance, and its various applications in construction [1,2,3,4,5,6]
All Ultra-High-Strength Textile Reinforced Concrete (UHSTRC) samples were found to be failed after the rupture of the bottom textile layer
The parametric studies showed that use of high strength textile mesh (Carbon fiber) with high mesh densities can increase the ratio between serviceability and ultimate conditions to reduce the efficiency in UHSTRC

Summary

Introduction

The use of Textile Reinforced Concrete (TRC) is increasing in recent years due to its superior properties, such as its excellent load-bearing capacity, high durability, fire-resistant nature, high corrosion resistance, and its various applications in construction [1,2,3,4,5,6]. As concrete cover required for the TRC is low due to the high corrosion resistance of the textile, TRC members can be fabricated with thinner sections compared to the conventional steel-reinforced sections [8,9]. This specific property of TRC is much more important in the context of using the TRC panels as facades in buildings [10,11]. TRC can be considered as a potential composite material for the prefabricated

Objectives

Results

Discussion

Conclusion