Behavior of reinforced concrete beams using recycled aggregates and fly ash admixtures strengthening with CFRP sheets

Abstract

Recycled reinforced concrete is the most effective and feasible solution to solve the problem of construction waste. Currently, the topic is being interested in domestic and foreign researchers, especially in the current period of depletion of natural aggregates. Construction waste landfill sites are also gradually shrinking. This paper presents and analyzes the experimental results obtained from 4 samples of reinforced concrete beams with dimensions of 200×300×1800 mm. In which, 03 beams use recycled aggregate and 01 beam uses natural aggregate. The beams use 30%, 50%, 70% recycled aggregate, and 30% fly ash, respectively. Reinforce beam with CFRP sheet, perform three-point bending test to determine the relationship between load and deflection of the test specimen. Experimental results allow analysis and evaluation of flexural behavior of reinforced concrete beams using recycled concrete aggregates with fly ash admixture reinforced with CFRP fiber panels.