IRJET- TEXTILE FIBRE REINFORCED CONCRETE (original) (raw)

The Project work is on the study of textile fibre reinforced concrete. The influence of type of fibres and their content on the characteristics of textile fibre reinforced concrete having different volume fractions are studied. Fibres include steel fibres, glass fibres, synthetic fibres and natural fibres-each of which lend varying properties to the concrete. In addition, the character of fibre-reinforced concrete changes with varying concretes, fibre materials, geometries, distribution, orientation, and densities. The mechanical properties such as compressive strength, split tensile strength and flexural strength are studied. However, whether textiles can cooperate with concrete very well depends on the bond between them. In this paper, the bonding mechanism that the stress was transferred from fine concrete to textile was analysed, and the influences of the initial bond length of textile, the surface treatment of textile, the strength and workability of concrete as well as the level of prestressing force on bond behaviour were investigated on the basis of pull-out tests. The results reveal that with initial bond length increasing, the maximum pull force increases, and increasing concrete strength and improving workability of concrete matrix, epoxy resin impregnating and sand covering of textile as well as prestressing textile can obviously increase the bond strength between the textile and concrete.The textiles with rows made of fibre-threads through basketry which are oriented parallel with the occurring stresses instead of randomly-dispersed short fibres in concrete can increase obviously the efficiency of fibre-reinforcing. Moreover, textiles have no risk of corrosion due to the ingress of chlorides and carbonation of concrete and are lightweight, flexible, high-strength as well as non-magnetic. Therefore, textile reinforced concrete structures are expected to have wide application foregrounds. In order to ensure that the bond between fibre and matrix and avoid pores, both of which influence the strength of the structure, the biggest grain size of matrix must be enough small and matrix must have a very nice workability and consistency so that they fully penetrate the textile. As prestressed textile reinforced concrete is concerned, the self-can influence the application of prestress. Thus, a new kind of self-compacting concrete (SCC) named as fine concrete is developed. The central task of this paper is development and optimization of the matrix in term of its chemical compatibility with the materials (alkali-resistant glass fibres) as well as a suitable consistency and workability based on test methods used for self-compacting concrete, rapid hardening, and high early strengths, for planned production processes.