Use of power plant bottom ash as fine and coarse aggregates in high-strength concrete

摘要: Abstract In this study, experiments have been carried out to evaluate the utilization of bottom ash (by-product power plant) as fine and coarse aggregates in high-strength concrete with compressive strength 60–80 MPa. Firstly, chemical physical characteristics particles, such compositions, specific gravity SEM images, were investigated. Further conducted by replacing normal sand gravel varying percentages (25%, 50%, 75%, 100%). The effect on flow density mixture was investigated aspect particle shapes paste absorption ash. Mechanical properties, strengths modulus elasticity flexural evaluated. It found that slump fresh slightly decreased from 530 mm 420 mm when replaced 100% aggregates, while did not affect flow. Moreover, it also showed both had more influence than strength.