Waste Metal For Improving Concrete Performance And Utilisation As An Alternative Of Reinforcement Bar

摘要

Waste material disposal is considered as a difficult issue to adopt in current world. Waste metal, which has been recognised as a major problem in the environment and resource deficiency, could have important implications in the concrete construction industries. Waste metal utilisation in construction of reinforced cement concrete (RCC) works is immerging in recent time. Construction industries are looking for cost effective structural materials and utilisation of renewable materials. Metal waste such as chips of tin, still and other metal fragments which is abandoned and spread in the environment could be utilize as a replacement of traditional steel reinforcement bar in the RCC. In this experiment, three different types of waste metal have been compared with commercial 40, 60 and 72 graded steel reinforcement bar. Compressive strength class of C25 concrete was used in the experiment and mechanical properties of concrete incorporating different waste metal were investigated in the first stage. Finally, three-point bend test on short beam was performed to compare their performances. Smaller metal fragments has shown better performance through micro crack bridging in concrete during loading stage and hence better than ordinary reinforcement concrete structure in some extent..