THE IMPACT OF WASTE PAPER ASH AS A CEMENT REPLACEMENT MATERIAL ON C-25 CONCRETE'S PROPERTIES

Concrete is one of the versatile and widely used building materials in the world construction industry. It is known that cement is one of the basic materials used in the production of concrete. However the production of cement is both environmental unfriendly and uneconomical as compared to the other constituents of concrete, showing that the cement industry has sustainability problems. In order to alleviate these problems of the cement industry, the use of different cement replacing materials which have lower cost of production, lower emission of CO2, and lower energy consumption, were being implemented. On the other hand, more waste paper ends up in landfill or dump sites than those recycled. Paper is a natural polymer which consists of wood cellulose, which is the most abundant organic compound in the planet. This study is therefore focuses on investigating the technical feasibility of using waste paper ash as cement replacement material in concrete production. In this study experimental investigations are carried out to evaluate the improvement of the fresh and hardened properties of C-25 concrete incorporating waste paper ash .Initially, waste paper ash samples were collected from different office and converted to ash. Secondly chemical compositions of paper ash were investigated. And then cement has been replaced by waste paper ash in the range of 0%, 5%, 10%, 15%, 20% and its effects on both fresh and hardened properties of C – 25concrete was studied.