International Research Journal of Engineering and Technology (IRJET)
e-ISSN: 2395-0056
Volume: 04 Issue: 07 | July -2017
p-ISSN: 2395-0072
www.irjet.net
AN EXPERIMENTAL INVESTIGATION ON THE EFFECT OF NANO-TiO2 PARTICLES ON THE PROPERTIES OF CONCRETE Abdul Hafiz S. B.1, Dr. K. B. Prakash2 1Student-M.Tech-Structural
Engineering, Government Engineering College, Haveri, Karnataka, India. Government Engineering College, Haveri, Karnataka, India. ---------------------------------------------------------------------***--------------------------------------------------------------------2Principal,
Abstract – This paper deals with an experimental investigation conducted on the properties of concrete to know the mechanical properties and durability of concrete on addition of Nano-TiO2 particles. Cement is replaced by Nano-TiO2 particles in different percentage, such as 0%, 0.5%, 1.0%, 1.5% & 2.0% respectively. The study is done on M30 grade of concrete. The Nano-TiO2 particles have been very effective for the replacement of cement at 1.0% for the strength parameter and durability when compared to normal concrete. Key Words: Nano-TiO2, compressive strength, flexural strength, split tensile strength, shear strength, impact strength, soroptivity. 1. INTRODUCTION Concrete is considered as material of the 21st century due to its functional use in the structures, buildings, factories, bridges and airports. The improvement in the concrete strength and durability is needed because of rapid population explosion and technology. To improve concrete properties, different supplementary cementatious material or SCMs are added. Fly ash, blast furnace slag, rice husk, silica fume and even bacteria are some of the supplementary cementatious materials. Nanotechnology is a rising field of science identified with the comprehension and control of matter at the nano-scale, i.e. at measurements between roughly 1-100 nm. Nanotechnology includes nano-scale science, designing and innovation that included imaging, measuring, displaying and controlling at this length scale. In the serviceability record arrangement of units, the prefix "nano" implies 1-billionth or 10-9. Along these lines 1 nm is 1-billionth of a meter. Nano-powders (grain size, 1-100nm) have high surface area hence it enhance the chemical, optical and mechanical properties. It is anticipated that addition of nano powders into composites will increase strength, reduce voids, and improve self control and cleaning. Incorporating of nano-particles in order to improve the durability of concrete is rarely reported. Therefore introducing some nano-particles which probably could improve the mechanical and durability properties of cementatious composites is inherent. Due to the new potential uses of nano-particles, there is a global interest in the investigation of the influence of nano particles in Š 2017, IRJET
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construction materials especially cements mortar and concrete. The nano scale size of particles can result in dramatically improved properties from conventional grainsize materials of the same chemical composition. There are several reports on merging nano-particles in concrete which most of them have focused on using SiO2 nano particles. Nano-TiO2 particles containing concrete acts by triggering photo catalytic degradation of the pollutants, such as NOx, carbon monoxide, VOCs, chlorophenols and aldehydes from vehicle and industrial emissions. Self-cleaning and depolluting concrete products are already being produced for use in the facades of buildings and in paving materials for roads and have been used in Europe and Japan. In addition to imparting self-cleaning properties, a few studies have shown that nano-TiO2 can accelerate the early-age hydration of Portland cement, improve compressive and flexural strengths, and enhances the abrasion resistance of concrete. 2. EXPERIMENTAL INVESTIGATION 2.1. Material used 2.1.1. Ordinary Portland cement. Ordinary Portland cement of 43 grade confirming to IS 8112:1989 is used. The chemical composition and cement properties are given in table-1 and table-2. Table 1: Chemical composition of cement. Composition CaO SiO2 Al2O3 CaSO4 FeO3 MgO S Alkalis
Percentage (%) 61 23 05 04 03 02 01 01
Table 2: Properties of cement. Properties Specific gravity Normal consistency ISO 9001:2008 Certified Journal
Results 3.15 33% |
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