THE EFFECTS OF USING WASTE GLASS POWDER AS PARTIAL REPLACEMENT OF CEMENT IN CONCRETE PRODUCTION

ABSTRACT The cement industry causes many environmental damages, because it manufacture causes the emission of green house gases to the atmosphere, such as Co2, which lead to global warming. Therefore, the search for new building material has become one of the most prominent engineering researches supported by construction companies in the world. This research studies the effect of using waste glass powder as partial substitute of cement at rate from 0%, 5%, 10%, 15% and 20% using the concrete grade of M15. Laboratory test were conducted to compare the performance of the control sample and the sample containing waste glass powder and this was done on fresh concrete to determine its workability by slum test and also the test were conducted on hardened concrete to determine the compressive strength at the days of curing of 7, 14, 21 and 28 days. The result clearly confirmed an increase in the workability of concrete with an increase in percentage of waste glass powder in the mixture. It also show improvement in the compressive strength and the optimum percentage of improvement was 10-15% of WGP. And then it declined from the previous work it proved that the glass powder has a pozzolanic reaction with cement hydrate. In the previous study shows that waste glass powder if ground finer than 100μm shows a pozzolanic behaviour. The result shows that up to 15% replacement of WGP increase strength at 28 days of curing and finally this research has attempted to provide an interesting approach to introducing glass powder as a cement replacement in concrete, aiming to improve the pozzolanic activity.