Effect of Short Fibers Orientation on Mechanical Properties of Composite Material – Fiber Reinforced Concrete

Abstract

Traditional fiberconcrete structures have fibres in the mix oriented in all spatial directions, distributed in the structural element volume homogenously, what not easy to obtain in practice. In many situations, structurally more effective is the insertion of fibres into the concrete structural element body by forming layers, with a predetermined fibre concentration and orientation in every layer. In the present investigation, layered fibre concrete is under investigation. Short steel fibres were attached to flexible warps with the necessary fibres concentration and orientation. Warps were placed into the prismatic mould separating them by concrete layers without fibres. Prisms were matured and tested under four-point bending. The bending-affected mechanical behaviour of cracked fibre concrete was simulated numerically by using a developed structural model. Comparing the simulation results with experimental data, material micromechanical fracture mechanisms were analysed and evaluated.

Concrete, Reinforced by Carbon Fibre Composite Structure, Load Bearing Capacity During Cracking

“…Back in the days of the Roman Empire, concrete made a real revolution in construction [2], [3]. Since then, concrete has been reinforced in various ways and materials, for example: bars made of different materials [4]- [7], different short fibres [8]- [10], and using different technologies [11]- [14]. The addition of discrete fibers to the concrete mixture to enhance its toughness and tensile strength is well acknowledged.…”

Experimental Compare of the Mechanical Properties of Pultruded Glass Fibre Reinforced Plastic Based on Polyester and Vinylester Resin

“…Modern composites are widely used now in different engineering constructions due to their high stiffness-toweight and strength-to-weight ratios [1], [2] and high dissipative properties [3], [4]. The mechanical properties of composite materials are estimated in most cases by using conventional fracture methods [5]- [6], ultrasonics [7] and inverse technique based on low-frequency vibrations [8]- [10].…”

Numerical simulation of composite reinforced by spun thread knitted fabric

“…One of the promising directions in textile reinforcing is the knitted fabric-reinforcement technology. Interest in polymer and brittle (concrete, ceramics) matrix composites, reinforced by such fabrics increased recently [1][2][3][4]. As one of the major advantages of such technology can be mentioned the possibility to produce complex shape products without having flanks in reinforcement at the stage of material fabrication.…”