International Research Journal of Engineering and Technology (IRJET)
e-ISSN: 2395 -0056
Volume: 04 Issue: 05 | May -2017
p-ISSN: 2395-0072
www.irjet.net
EIA FOR REDUCTION IN GLOBAL WARMING A NEW ERA IN CONSTRUCTION INDUSTRY – NANO CONCRETE ASHWIN KUMAR E.K1 , M.M VIJAYALAKSHMI2 1UG
Scholar, Department of civil Engineering, Sathyabama University, Chennai, India-600119 and Research head, Department of civil Engineering, Sathyabama University, Chennai, India-600119 ---------------------------------------------------------------------***--------------------------------------------------------------------2Professor
Abstract - The increase in the greenhouse effect causes
ecological imbalance contributing to global warming which is at alarming rate. Concrete usage around the world is second only to water. According to the recent study as of 2015, 280 tons of cement is manufactured in India and 4180 tons of cement is manufactured over all in the world which means 4180 tons of CO2 is emitted as pollution in the environment which leads to global warming. An important ingredient in the conventional concrete is the Portland cement. The cement industry is responsible for 6% of all CO2 emission, because the production of one tone of Portland cement emits approximately one tone of CO2 into the atmosphere. In order to overcome the global warming effect caused by the manufacturing of the ordinary Portland cement there is an immediate need to find a suitable substitute. In this investigation, the property of concrete modified with titanium di oxide in M45 grade is determined. As per IS-10262 – 2009 concrete Mix design, two types of samples are prepared for the experimental work. In the first sample titanium di oxide replaces about 0.5%, 1%, and 1.5% of cement in M45 grade of concrete and the second sample is the conventional concrete. These samples are casted and cured up to 28 days for carrying out the related tests. Compressive test, split tensile test and flexural test are the tests conducted on this cured samples. Using titanium di oxide (Tio2), it is observed that compressive strength, split tensile strength, flexural strength is higher in the first sample which is a nano concrete compared to the conventional concrete.
of the common properties of Nano-Particles are - Welldispersed nano-particles increase the viscosity of the liquid phase helping to retain the cement grains and aggregates which improves the segregation Resistance and workability of the system [4]. Nano-Particles fill the voids between cement grains which results in the Immobilization of ‘’free’’ water (‘’filler effect”) [5]. Well-dispersed nano particles acts as centers of crystallization of cement hydrates, therefore accelerating the hydration [6]. Nano-Particles favor the formation of small-sized uniform clusters of C-S-H. NanoParticles participates in the pozzolonic reactions, resulting in the consumption of Ca(OH)2 formation of an ‘’additional’’ CS-H.Nano-Particles improve the structure of the aggregates contact zone, resulting in a better bond between aggregates and cement paste[7].Crack arrest and interlocking effects between the slip planes provided by nano-particles improve the overall mechanical properties like toughness, shear, tensile and flexural strength of cement based materials[8].This research involved partial replacement of cement by TIO2 and thereby making concrete more affordable to common man.
Key words: Greenhouse effect, Nano Particles, Titanium di oxide, M45 concrete, compressive strength, split tensile strength, flexural strength
1.INTRODUCTION Concrete is one of the most widely used construction materials. It is usually associated with Ordinary Portland cement as the main component for making concrete [1]. The demand for concrete as a construction material is on the increase. The development of concrete modified using Titanium dioxide is in the response for the need of a greener concrete in order to reduce carbon dioxide emission from the cement production [2]. It offers a significant opportunity to materialize green concrete as it is possible to utilize a byproduct such as titanium dioxide to replace the use of ordinary Portland cement in concrete, and hence to reduce the emission of carbon dioxide to the atmosphere [3]. Some © 2017, IRJET
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Fig - 1: Titanium di-oxide(TiO2) when viewed under Scanning electron microscope at mag = 100.00 K X.
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