STUDY ON MECHANICAL PROPERTIES OF TEXTILE REINFORCED CONCRETE

Materials and Structures, 2013

Textile Reinforced Concrete (TRC) is an advanced cement-based material in which fabrics used as reinforcement can bring significant loads in tension, allowing architects and engineers to use thin crosssections. Previous research projects, developed during the last 10 years mainly in Germany, Israel and the USA, have shown the capabilities of such a material. In this paper an extensive experimental investigation of TRC is presented: tensile tests were carried out to obtain a complete mechanical characterization of the composite material under standard conditions, considering the influence of different variables such as reinforcement ratio, fabric geometry, curing conditions, displacement rate and specimen size.

MATEC Web of Conferences, 2016

This paper deals with the flexural behaviour of textile-reinforced concrete (TRC). Two samples of TRC made of high strength reinforcing fabrics made of glass and carbon rovings were produced. Three-point bending test was carried out to examine the flexural performance of the developed samples. The maximum flexural strength and reinforcement efficiency were calculated. Experimental results showed that that all types of applied fabric reinforcement contributed to increases strength as compared to nonreinforced concrete. Furthermore, the deformation behavior of reinforced concrete was analyzed. The advantage is in higher residual load-bearing capacity, which allows maintaining the integrity of the structure.

Buildings

Textile-reinforced concrete (TRC) is a form of reinforced concrete, where conventional reinforcement is replaced with textiles or fibers. The high tenacity of the textile fibers results in flexible and durable concrete structures. The literature has been limited to TRC applications in retrofitting and nonstructural applications. Therefore, this article attempts to detangle the progressive research direction on the usage of TRC as a structural member. For this, (i) a bibliometric study using scientometrics analysis to visualize the keyword network, and (ii) qualitative discussions on identified research areas were performed. The literature was categorized into four main research areas, namely material properties of TRC, composite behavior of TRC, bond-slip relations, and TRC applications as structural elements. In addition, the advantages and disadvantages in the usage of TRC as a structural member are discussed in association with the identified research areas. Furthermore, the arti...

The objective of this study was to investigate use of pultrusion technique as a cost-effective method for the production of thin-sheet fabric-reinforced cement composites. Cement based composites were developed with different fabric types using cast (hand lay up) process and pultrusion (impregnated) methods. Knitted fabric made from low modulus polypropylene (PP) fabric, woven fabric made from low modulus polyethylene (PE), and bonded glass meshes were used. Tensile and pullout tests as well as SEM observations were used to examine the mechanical, bonding and microstructure properties. It was observed that the processing method significantly affects the bond as well as the tensile performance of the composite. The best performance was achieved for the PP pultruded composites.

Polymers

Textile reinforced concrete (TRC) has gained attention from the construction industry due to its light weight, high tensile strength, design flexibility, corrosion resistance, and remarkably long service life. Some structural applications that utilize TRC components include precast panels, structural repair, waterproofing elements, and façades. TRC is produced by incorporating textile fabrics into thin cementitious concrete panels. Premature debonding between the textile fabric and concrete due to improper cementitious matrix impregnation of the fibers was identified as a failure-governing mechanism. To overcome this performance limitation, in this study, a novel type of TRC is proposed by replacing the cement binder with a polymer resin to produce textile reinforced polymer concrete (TRPC). The new TRPC is created using a fine-graded aggregate, methyl methacrylate polymer resin, and basalt fiber textile fabric. Four different specimen configurations were manufactured by embedding 0...

2015

Fibre reinforcement has been used to reinforce concrete members for decades. It has combined well with concrete to help control cracking and increase toughness and other properties such as corrosion resistance. The use of traditional fibre reinforcement has led to the development of a new material called textile reinforcement (multifilament continuous fibre) which can also be used as the main reinforcement instead of steel reinforcement. This study experimentally investigates concrete beams reinforced only with carbon textile material (TRC beams). The tensile strength of textile reinforcement and pull out strength of TRC were measured. Four-point bending tests were performed on 76 beams (small and large scale beams). Several parameters such as volume fraction and reinforcement layout were studied in order to investigate their effect on TRC beam behaviour. The results showed that with the correct layout and geometry of textile reinforcement, these reinforced concrete beams, providing...

Cement and Concrete Composites, 2014

This papers addresses the disparities that exist in measuring the constitutive properties of thin section cement composites using a combination of tensile and flexural tests. It is shown that when the test results are analyzed using a simplified linear analysis, the variability between the results of tensile and flexural strength can be as high as 200-300%. Experimental results of tension and flexural tests of laminated Textile Reinforced Concrete (TRC) composites with alkali resistant (AR) glass, carbon, aramid, polypropylene textile fabrics, and a hybrid reinforcing system with aramid and polypropylene are presented. Correlation of material properties is studied analytically using a parametric model for simulation of flexural behavior using a closed form solution based on tensile stress-strain constitutive relation. The flexural load carrying capacity of TRC composites is computed using a back-calculation approach, and parameters for a strain hardening material model are obtained using the closed form equations. While the parametric model over predicts the simulated tensile response for carbon and polypropylene TRCs, predictions are however consistent with experimental trends for aramid and glass TRCs. Detailed discussion of the differences between backcalculated and experimental tensile properties is presented. Results can be implemented as average moment-curvature relationship in the structural design and analysis of cement composites.

2018

1 Final year, Bachelor of Engineering, Department of Civil Engineering, Oxford Engineering College, 2 Assistant Professor, Department of Civil Engineering, Oxford Engineering College, 3Professor & Head of the Department, Department of Civil Engineering, Oxford Engineering College. --------------------------------------------------------------------***--------------------------------------------------------------------ABSTRACT“Our World is made of concrete”. As a Civil Engineer we all know that Concrete is strong only in Compression and weak in Tension. In order to increase the Tensile strength of the Concrete, it is being reinforced with steel, which unfortunately also has the drawback of being susceptible to corrosion and fatigue. It will further increase the maintenance and repair cost of the structure. And it is clear that we urgently need high performance construction materials to adequately meet our needs. An innovative concept to eliminate these drawbacks is the textile reinfo...

IOSR Journal of Mechanical and Civil Engineering, 2016

The present investigation was carried out to determine the split tensile strength and also the resistance to cracking by determining the flexural strength of plain concrete and polyester fiber reinforced concrete by using "Recron 3s", a polyester fiber by Reliance. This is aimed at increasing the tensile strength and flexural strength of concrete which weak in tension and only strong in compression. This is also aimed at increasing the ductility of concrete under tensile stresses. OPC 43 Grade Cement was used in this work and all the necessary testes on cement and aggregates were conducted. Various fiber percentages of 0.2%, 0.4%, and 0.6% by weight of cement were tested for compressive strength, split tensile strength, and flexural strength. These mixes were then compared with a nominal mix with 0% fiber. A comparative analysis was carried out so as to obtain the percentage increase/decrease in strength due to the addition of fibers for all the above tests. It was observed that addition of fiber percentage of 0.4% gave the maximum strengths for all the three tests.

Sādhanā

Textile Reinforced Concrete (TRC) is gaining its popularity as a construction material. It is essential to investigate new materials to quantify its expected structural performance and integrity. The purposed study is to investigate the influence of material type and volume fraction of textile and type of matrix on the impact behaviour of textile reinforced concrete slabs. Both glass and basalt textiles were used in the investigations. Based on the investigations, it is concluded that the type of binder influences the impact resistance at first crack as well as the delamination possibility. Glass textile reinforced concrete slabs show more displacement and more residual capacity compared to basalt textile reinforced concrete slabs. With increased number of layers, the basalt textile reinforced concrete slabs exhibited decrease in impact resistance due to delamination. As energy level increases, glass textile reinforced slabs show increase in peak displacement whereas basalt textile reinforced concrete slabs show a decrease. The investigations reported will be useful for extending the knowledge of textile reinforced concrete for various impact resistant applications.