International Research Journal of Engineering and Technology (IRJET)
e-ISSN: 2395-0056
Volume: 09 Issue: 05 | May 2022
p-ISSN: 2395-0072
www.irjet.net
Investigations on Flow and Strength of Glass Fiber Self Compacting Concrete Syed Qasim Uddin1, Abdullah2, Mohd Abdul Aleemuddin3, Kanchala Nanchari4 Students, Department of Civil Engineering 4 HOD Dept of Civil Engineering ISL Engineering College, Hyderabad, Telangana, India ---------------------------------------------------------------------***--------------------------------------------------------------------advantages of the SCC with the positive effects of the fibre Abstract - Fibre-reinforced self-compacting concrete 1, 2, 3 UG
(FRSCC) is a new building material that combines positive characteristics of workability of self-compacting concrete (SCC) with enhanced characteristics of hardened concrete due to fibre addition. Fibers were combined randomly to create fibre reinforced concrete during the time, and fibres came in a variety of diameters. Generally, concrete has a higher compressive strength than it has tensile strength. However, random fibre insertion often boosts the tensile properties of the concrete without changing the compression properties. The purpose of this experimental work is to describe the mechanical strength behaviour of glass fibre reinforced Self Compacting Concrete (SCC) when it is exposed to compression, flexural, and split tensile strength tests for concrete grade M 70. Glass fibre contributed 0.5-2 percent of the binder. The mix design for M70 grade was determined in accordance with the codal clause of IS10262. The slump flow, L box, and V funnel tests are used to determine the different SCC fresh features such as flow ability, passage ability, and segregation resistance. Additionally, the compressive strength, flexural strength, and split tensile strength of firm concrete are determined. Key Words: Self Compacting Concrete, Fiber reinforced selfcompacted concrete, Glass fiber, fiber reinforcement
1. INTRODUCTION Self-compacting concrete (SCC) is a relatively new building material which is able to flow under its own weight, totally filling the formwork, however maintaining homogeneity even in the existence of congested reinforcement, and then consolidating without compaction. Time required for construction is shorter and production of SCC is without noise and vibrations. Also, SCC yields a good surface finish and gives better freedom in design. Filling ability, passing ability and segregation resistance are the important properties of SCC which are attained by increasing the amount of fines (i.e. particles <0.125 mm), reducing waterpowder ratio and using a superplasticizer [1,2]. With increase in content of fines, paste volume in SCC is increased, thus resulting in high shrinkage and creep. To reduce the paste content sometimes a stabilizer (viscosity modifying admixture) is used to improve the segregation resistance of SCC [3]. Fibre-reinforced self-compacting concrete (FRSCC) is a new building material that merges the © 2022, IRJET
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addition to a brittle material (concrete). It is a ductile material that in its fresh state runs into the interior of formwork, filling it in a natural way, passing through the obstacles, and consolidating under the action of its own weight. FRSCC can diminish two opposing weaknesses: cracking resistance in plain concrete and poor workability in fibre-reinforced concrete (FRC). FRSCC has found vast application in the construction of tunnel lining and railway sleepers. Another application of FRSCC is in the repair of highway and airfield pavements. Development of SCC gives major solution for placing concrete at high reinforced places and also its give better durability nature at the time of cast in-situ concrete. The SCC usage not affects the amount of reinforcement content in conventional concrete design. Other then durable advantage the SCC get high amount of resistance in segregation but, it’s get high flow ability. So, its possible to pump SCC in long distance and also the SCC used for various products. The various fiber additions on self compaction concrete improve their durability and strength characters. This project use glass fiber for improving strength and also reduce the unit weight purpose. Self Compacting Concrete generally possesses a high powder content which keeps the concrete cohesive with a high flowability.
Faster progress, as more amount of concrete free fall is possible
Better surface finishes because of more fines and better fluidity
Better molding ability, there by easy to shape the concrete for aesthetics
1.1 NEED FOR THIS STUDY Addition of fibers improves the strength character of concrete and the problem of developing micro cracks at the time of curing in self compacting concrete was overcome by use of glass in concrete. A Glass fibre has supplies strength to the concrete whereas the matrix protects the fibers.
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