Numerical Modeling on the Structural Performance of RCC Beams Made With SCC Produced By RCA as Coarse Aggregate

Abstract

Economical status of a country mainly depends on the amount of investments made on the infrastructure development. Most of the high rise buildings constructed in our country have grown old and are being demolished or strengthened. The construction of new high rise structures will require huge amount of source materials like cement and fine and coarse aggregate. Especially, 8 – 12 billion tons of natural aggregates were consumed annually by the construction industry around the world. This may result in increased demand on the source materials and leading to various socioeconomic problems. On the other hand, disposal of concrete debris from the demolished high rise concrete structures requires large land area for open disposal. In order to solve these two problems, concrete debris from the demolished structures are processed and used as an alternative material to the coarse aggregate. The main objective of this study is to determine the structural performance of recycled concrete aggregate in self-compacting concrete (SCC) as a replacement for coarse aggregates.RCA is used as substitute for coarse aggregate at percentages ranging from 0 to 100%, at an interval of 20%. To evaluate the structural performance of RCC beams prepared with fibre reinforced SCC of grade M40 was tested experimentally and numerically. Numerical investigation on RCC beams was done in the simulation software ANSYS packages.