31-10-2014, 03:36 PM
Abstracts: In developing countries like India, the generation of construction and demolition (C &D) waste is upto the tune of 23.75 million tones annually and these figures are likely to double fold in the next 7 years. The generation of huge amount of construction waste is expected due to demolition of older structures built more than 30 years ago. On the other hand, the reuse of construction waste is highly essential from the view point of Life Cycle Assessment (LCA) and effective recycling of the construction resources. Using the demolished concrete debris as recycled concrete aggregate conserves natural aggregates, reduces the impact on landfills, decreases energy consumption and can provide cost savings. Use of demolished concrete debris as aggregate in concrete has become compulsion for many countries due to the scarcity of natural aggregates. The use of recycled aggregates in concrete results in significant economical and environmental benefits. In order to promote the reuse of concrete waste, it is necessary to achieve three basic concepts
1) assurance of safety and quality, (2) decrease of environmental impacts, and (3) increase of cost effectiveness of construction.In the present work, an attempt has been made to assess the effect of recycled concrete aggregate on the strength of ordinary concrete. The goal of this study is to develop the economical and sustainable concrete by using the concrete waste available on the site. Along with this, the influence of different admixture such as, fly-ash (Pozzocrete 60), rise-husk-ash etc. on the strength of recycled aggregate concrete will also be checked.
1) assurance of safety and quality, (2) decrease of environmental impacts, and (3) increase of cost effectiveness of construction.In the present work, an attempt has been made to assess the effect of recycled concrete aggregate on the strength of ordinary concrete. The goal of this study is to develop the economical and sustainable concrete by using the concrete waste available on the site. Along with this, the influence of different admixture such as, fly-ash (Pozzocrete 60), rise-husk-ash etc. on the strength of recycled aggregate concrete will also be checked.