International Research Journal of Engineering and Technology (IRJET)
e-ISSN: 2395 -0056
Volume: 04 Issue: 03 | Mar-2017
p-ISSN: 2395-0072
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Behaviour of Ultra - High Performance Glass Concrete confined with High Carbon Steel Wire under Axial load KAVIYARASI T1, SARAVANA KUMAR N2, NIVETHA K3 1PG
Student Department of Civil Engineering, Mepco Schlenk Engineering College, Sivakasi, Tamil Nadu, India 2Assistant Professor Department of Civil Engineering, Mepco Schlenk Engineering College, Sivakasi, Tamil Nadu, India .3PG Student Department of Civil Engineering, Mepco Schlenk Engineering College, Sivakasi, Tamil Nadu, India ---------------------------------------------------------------------***--------------------------------------------------------------------bars under compression, thus enhance bonding action with concrete.
Abstract - This work proposes an idea on experimental
investigations with a new type of ultra- high performance concrete with external lateral confinement. As an approach towards a sustainable development, glass powder is used which deals with an evolution of indexes related to hydration of concrete. Five cylinders were tested with the variation of confinement pressure that was achieved by changing the winding spacing of high carbon steel wire (HCSW). An addition of external lateral reinforcement in the form of steel wires improves the toughness of the specimens. This technique plays a vital role in structural repairs, seismic strengthening and retrofitting of the structure. The results of the experimental study such as the ultimate load strength, stress – strain curve, effect of confinement and failure modes of the specimen are ascertained. These results showed that winding of HCSW is an effective and efficient methods of jacketing that can enormously enhance the strength and gives abundant warning compared with control specimen.
The results of earlier research work conducted by the J. Li et al, this paper experimentally investigates the performance of externally confined high strength concrete columns subjected to eccentric loading and determines the effectiveness of two confinement materials carbon fiber and glass fiber. A significant amount of research has been done by Mender et al. his work long stress strain behavior of confined concrete with spiral reinforcement was done both by experimentally and analytically. According to the latest research work that was conducted by Yang Wei et al investigates the HSW circular confined concrete columns with various spacing of wire under compressive load. With these conclusions comparison with ordinary steel spiral confinement was done. This model work proposed provide a better prediction of stress – strain curve for both specimens. In this current paper, high- carbon steel wire (HCSW) with strength more than 1500N/mm2 are preferred. These wires of smaller diameter are used for specimen jacketing. compared with FRP, HCSW is with high malleable, ductile and less sensitive to high climatic condition.
Key Words: ultra – high performance glass concrete, high carbon steel wire, jacketing, confinement, compressive strength.
The objective of this paper is to experimentally investigate the axial compression behaviour of Ultra-High performance glass concrete using high carbon steel wire as an external lateral confinement.
1.INTRODUCTION Ultra- high performance glass concrete has a very low water – to – binder ratio (W/B), high fineness admixtures, high energy absorption capacity and durability. Test results indicates that the addition of 2% of steel fibers significantly enhance the load carrying capacity and post cracking stiffness. In recent years, the usage of external lateral confinement has become enormously popular for the repair and rehabilitation of concrete structures.
2.RESEARCH SIGNIFICANCE The experimental results denote that the fresh Ultra-High Performance Glass Concrete (UHPGC) properties were gradually enhanced when the cement was replaced with non-absorptive glass powder particles. The strength improvement can be attributed to glass powder pozzolanicity and its mechanical performance. In order, to produce concrete economical and greener than the conventional UHPC.
Various strengthening methods such as strips, strands, hoops, spiral, wires etc. utilize the benefits produced by the lateral confinement of RC specimens to enhance structural integrity. For existing structures, the conventional steel bars and wires of low yield strength are used. This technique for RC cylinder improves both bearing capacity and ductility, reduces risk of buckling of main reinforcement
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