Assessing the utilisation of industrial waste as aggregate and manufactured sand: microstructural and durability characteristics on high-performance concrete

Abstract

Purpose

Utilising industrial waste, such as fly ash (FA) and bagasse ash (BA), reduces waste management and increases mechanical strength. Concrete is modified with FA and BA in the cool bonded method of concrete preparation.

Design/methodology/approach

The study used to partially replace cement with BA powder at proportions 0, 5, 10, 15, 20 and 25% and coarse aggregates are replaced with FA aggregates made with FA and cement using a cold-bonded technique at proportions 0–25%. FA aggregates were made at 10:90, 15:85, 20:80 and 25:75 proportions of cement and FA. The FA aggregates at the best proportion 15:85 was selected as a coarse aggregate by conducting tests like specific gravity, crushing value, impact value and water absorption tests.

Findings

The addition of 30% content decreases porosity by 21% and increases strength significantly at 28 days. Microstructure evolution is carried out to identify material behaviour.

Originality/value

Mechanical and durable properties such as flexural strength, tensile strength, water absorption test, acid and alkaline tests are conducted on M50 grade concrete after 3–28 days of curing.

Citation

Reddy Kamasani, C. and Siddamreddy, S.R. (2022), "Assessing the utilisation of industrial waste as aggregate and manufactured sand: microstructural and durability characteristics on high-performance concrete", International Journal of Structural Integrity, Vol. 13 No. 4, pp. 734-749. https://doi.org/10.1108/IJSI-03-2022-0034