Mechanical Behaviour of TRC Composites: Experimental and Analytical Approaches (original) (raw)
Related papers
2018
Textile Reinforced Concrete (TRC), also known in Italy as Fabric-Reinforced Cementitious Matrix (FRCM) composite, represents a promising reinforcement solution for the upgrading and the restoring of the load carrying capacity of structural elements unable to meet the requirements imposed by recent technical regulations with respect to seismic actions. The research is focused on the investigation of the mechanical properties of FRCM composites at different scales of analysis; both mechanical characterization of the composite systems (fabric, matrix and dispersed short fibers) and meso-scale tests focussing on the interface bond-slip behaviour are presented in this paper.
Textile-Reinforced Concrete as a Structural Member: A Review
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...
Textile Reinforced Concrete: experimental investigation on design parameters
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.
Mechanical Behavior of Textile Reinforced Concrete (TRC) / Concrete Composite Elements
Journal of Advanced Concrete Technology, 2010
In this paper the response of composite structural elements cast against thin-walled stay-in-place (SiP) formwork elements made of Textile Reinforced Concrete (TRC) is experimentally investigated and analytically approached. TRC comprises an innovative composite material consisting of fabric meshes made of long fibre yarns (e.g carbon, glass, aramid or basalt) arranged in at least two (typically orthogonal) directions and embedded in a cementitious fine-grained matrix. Two types of reinforced concrete specimens were considered: the first one included 22 beam-type specimens incorporating flat TRC formworks, whereas the second included 11 prismatic column-type specimens cast into permanent precast TRC shafts. Moment and deflection values at first-crack, steel yielding (where applicable) and ultimate for the beam-type specimens were analytically derived based on a proposed simplified approximation of strain distribution across a fibre roving. Based on the results of this study SiP TRC formwork elements comprise an attractive system for hybrid construction practices.
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.
Flexural Behavior of Textile-Reinforced Concrete
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.
STUDY ON MECHANICAL PROPERTIES OF TEXTILE REINFORCED CONCRETE
i-manager’s Journal on Structural Engineering (JSTE), 2020
This study deals with the experimental investigations on the effects in Textile Reinforced Concrete (TRC) as reinforcing material and conventional concrete. In this study, M25 grade concrete is used for nominal mix design. High strength high modulus polyester filament yarns are used to study its effects in reinforcing concrete mixes and to obtain basic strength. For the concrete to achieve its maximum strength and longevity, curing must be carried out for a suitable period of time. In this study, the curing is done by preventing excessive loss of moisture from the concrete either by leaving formwork in place, covering the concrete with impermeable membrane after the formwork has been removed by the application of suitable chemical curing agent (water based), or by combination of such methods. Curing by continuously wetting the exposed surface prevents the loss of moisture from it. The compressive, flexural strength tests were performed by placing the textile in the form of layers 1, 2 and 3. As a result, it had been found that the use of polyester textile material considerably increases the flexural strengths. It is also observed that there is a sudden decrease in flexural strength and compressive strength when textile is placed in 3 layers. The maximum flexural and compression strength is obtained by placing the textile in the form of 2 layers and found to be economical. Eventually it has been observed that, there have been an increase in flexural strength for about 48%.
Mechanical Behaviour of Textile Reinforced Concrete
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...
Durability of Textile Reinforced Concrete: Existing Knowledge and Current Gaps
Applied Sciences, 2021
This paper aims to provide a review of the current literature on the durability of textile-reinforced concrete and mortar (TRC/TRM) composites. Most previous studies have focused on the role of chemical attacks, freeze-thaw conditions, and high temperatures on the mechanical performance of these composites. Information on the long-term performance of TRCs under synergistic action of mechanical and environmental loads is scarce. Considering the variety of fabrics and matrices used for the production of TRC composites, the existing data are still very limited and comprehensive studies are needed in this field. Additionally, due to the lack of standard procedures, different approaches are often followed for durability or post-ageing mechanical tests, or sufficient data on the curing and post-ageing preparation procedures followed are not provided. These have led to incompatibility of the existing data and in some cases contradictory results on the durability of these materials.
The potential of textile reinforced concrete for design of innovative structures
Proc. of the International fib Symposium on Conceptual Design of Structures, 2019
Textile Reinforced Concrete (TRC) is a recent evolution of ordinary reinforced concrete. This relatively new construction material replaces steel reinforcement with high-strength, non-corrosive textile fabrics in order to reduce cover requirements to minimum static values. This allows to cast thin and durable members with a thickness of 10 – 20 mm. To encourage the use in practice of TRC, several researches are focussing on its material and structural response. Within this frame, a number of prototypes have been built to explore the potential application of TRC. In the present research, the material and structural response of TRC are investigated as well as its application on full-scale elements. In this paper, the main results of this investigation are shown to highlight the potential of this material.