STUDY THE EFFECT OF RECYCLED GLASS POWDER IN COMBINATION WITH CORN STARCH AS A BINDING AGENT – “A SUSTAINABLE APPROACH TOWARDS RE-EVALUATING THE MECHANICAL PROPERTIES OF GLASS CONCRETE”

Abstract

Concrete is a versatile building material which is utilized in maximum construction activities. Extensive deterioration might encounter in concrete due to abrupt environmental changes, but fibrous concrete can potentially enhance the value and scaleof concrete, which can substantially play significant role inhumid environments. Concrete is consumed exponentially in execution works with inevitably increasing consumption. It has to encounter multi-dimensional environmental issues like blistering and scaling. Some fibers if added can substantially improve the voids ratio in fibrous concrete. Keeping in view, sodium silicate glass (SSG) might be considered substitutefor cement. It can be utilized with different percentages 0%,5%,10% and 15%as a replacement cement in combination with corn starch(CS), which should be 1% for all mixes. In this paper, an experimental study is conductedto investigate the classified properties of concrete,by performing wide range of testing procedures that includes, compression test, split tensile test, alkali silica reactivity test, sulfate resistivity test and drying shrinkagetest. In this connection, ninety-sixconcrete cylinderswere prepared for compression and split tensile test, forty-eightconcrete cubes for compression test and thirty-six mortar bars of four mixes are prepared for durability testing. Freshly prepared concrete was tested and checked for workabilityduring the pouring of concrete cylinders. Poured cylinders’ samples are left for different age-based testing of curing to be conductedat 7,14,21 and 28 days respectively. After curing, samples are tested to check the compressive strength of hardened concrete. Workability of four mixes lies between 50-70mm. Test resultsshowed that compressive strength of concrete is increased using SSG of15% as compared to other mixes of concrete with 5% and 10%, inferring thatfibrous concrete is suitable for humid environments, where high strength and concrete with minimum voidsis required. In addition to that, the glass powder if added cautiously can predominantly improves the strength of concrete ultimately helps inreduction of water cement ratio. As per the recommendations of the research, if the cement’s quantity is reduced drastically and instead of cement then recycled glass powder is added to concrete at least 15% for quantities included in overall concrete mixture to attain optimum results.