Effect of polypropylene fiber and sugar factory waste material on mechanical and durability properties of roller compacted concrete with recycled aggregate

Global population growth, diversification of needs and unconscious consumption consume the existing raw material resources in the world. In addition to affecting every sector in different ways, it seriously shocks the construction industry, which depends on raw materials. This problem has led civil engineers and researchers to produce alternative solutions. Reusing waste materials instead of producing a new material has become the brightest alternative solution in this process. In these days when we have come to the point where issues such as climate change crisis and global warming are no longer in the news, but are felt, the whole world is mobilized and directed towards recycling. Awareness has started to be raised in our country within the scope of combating climate change; The concept of sustainability, which aims to save energy and reduce greenhouse gas emissions, is becoming widespread. Natural disasters and restoration works constitute a large portion of waste materials. It is known that the rate of use of recycled aggregate in the concrete industry is increasing. The use of recycled aggregate (RCA) in concrete not only prevents environmental pollution, but also protects raw materials and saves energy. In this study, the mechanical, physical and durability properties of roller compacted concrete (RCC) produced using recycling aggregate, sugar factory waste ash (AK) and polypropylene (PP) fiber were compared with traditional RCC produced with natural aggregate. In this study, the usability of waste materials on RCC was investigated; RCC samples were produced by replacing RCA's at the rates of 0%, 25%, 50% and 100%. However, in order to slightly reduce cement consumption, 0%, 0.5%, 1%, 2% PP fiber was used as a 0%, 7.5%, 15% and 30% cement replacement to improve the properties of AK and RCC. RCC containing AK shows a relatively high absorbency coefficient because AK particles have high porosity, angular form, irregular size and high ignition loss. The design prepared with optimum proportions and the application of CRCA, FRCA, AK and PP fiber together can effectively reduce the carbon emissions of RCCs.