Performance Evaluation Of Cement Mortar Mixed With Construction And Demolition Waste

Abstract

newlineConstruction is one of the most important sectors for the development of a country. In India, it newlineis one of the major sectors that contributes to socio-economic development. Due to the vast newlineincrease in construction and demolition work, there is a huge volume of construction and newlinedemolition waste generated. For, the sustainable growth of the country, these wastes should be newlinedisposed off efficiently without harming the environment by using new technologies and newlinemethods. One such way of tackling the construction and demolition waste issues is using it as newlinerecycled aggregates in mortars. Adopting this method is beneficial in many ways, such as newlineenvironmental protection, cost-effectiveness, etc. However, benefits are limited when it is used newlineas recycled fine aggregate in comparison to recycled coarse aggregate. Therefore, replacing the newlinesand, with CDW fine aggregate is possible up to a limited percentage only. The construction newlineand demolition waste used in this study has been collected from the Papum Pare district of newlineArunachal Pradesh. The collected waste is crushed to fine form and is reused as recycled fine newlineaggregate in mortar, for partially replacing the sand. Three types of construction and demolition newlinewastes are collected for recycled fine aggregate, namely RCC recycled fine aggregate, Brick newlinepowder recycled fine aggregate, and SPT recycled fine aggregate. The RCC waste recycled newlinefine aggregate was found to be more efficient in comparison to the other two wastes. To find newlinethe optimum replacement percentage, various tests have been performed, such as Compressive newlinestrength, Permeability, Porosity, Water absorption, and Ultrasonic pulse velocity. The newlinestructural and mineralogical tests for the materials have also been performed by SEM, XRD, newlineand EDX analysis. The optimum percentage of RCC recycled fine aggregate to partially replace newlinesand was found to be 35%. newlineThe amount of replacement of construction and demolition waste recycled fine aggregate was newlinefixed at 35% according to the test result obtained.