An experimental investigation on the suitability of coarse recycled aggregate for high strength concrete

摘要

This paper presents the findings of an experimental investigation on the viability of using coarse recycled aggregate for production of high strength concrete. The investigation was carried out using workability test, compressive test, and indirect tensile test. There were total of five batches of concrete mixes, consist of every 25% increment of recycled aggregate replacement from 0.0 % to 100 %.rnThe workability of concrete considerably decreased as the amount of recycled aggregate increased. For strength characteristics, the results showed that it is possible to get high strength concrete (50 Mpa or greater) using recycled aggregate replacement ratio of up to 50 %. The reduction in compressive and indirect tensile strength will be around 20 %.