INFLUENCE OF INDUSTRIAL BY-PRODUCTS IN ARTIFICIAL LIGHTWEIGHT AGGREGATE CONCRETE: AN ENVIRONMENTAL BENEFIT APPROACHKolimi Shaiksha Vali and S. Bala Murugan
Lightweight aggregate concrete manufactured from cold-bonded artificial lightweight aggregates with major amount of fly ash facilitates the use of high volume fly ash in aggregate with minimal energy use. This paper examines the influence of supplementary cementitious materials from industries on the strength behavior of cold-bonded artificial lightweight aggregate concrete due to partial replacement of cement. Replacing cement with granulated blast-furnace slag, silica fume and addition of glass fibres shows higher strength due to both matrix and matrix-aggregate inter facial bond densification with lesser cement content. Artificial lightweight aggregate concrete with a cement content of 249 kg/m3 develops approximately 32.1 N/mm2 compressive strength.