Effect of fine aggregates in properties of porous concrete with cupola furnace slag

• Main Authors: Zaman, Shamoeta, Al Hasan, Md. Abdullah, Mutsuddy, Rupak
• Format: Conference Proceeding
• Language: English
• Subjects: Cast iron; Compressive strength; Concrete aggregates; Concrete construction; Degradation; Density; Infiltration rate; Iron and steel making; Slag; Storm runoff; Stormwater management; Water-cement ratio
• ISSN: 0094-243X; 1551-7616
• DOI: 10.1063/5.0129860

Nowadays various waste materials are used in concrete construction for the sake of sustainable and environment-friendly development. This study was carried out to explore the possibility of utilization of cupola furnace slag (which is a by-product of cast iron manufacturing process) in porous concrete as partial replacement of coarse aggregate. Porous concrete helps in decreasing the storm water runoff & is an eco-friendly pavement. This study presents the influence of fine aggregate on the properties of porous concrete with slag as partial coarse aggregate. For constant water to cement ratio of 0.28 and 20% coarse aggregate replacement by cupola furnace slag, three different mix compositions (1:0:4, 1:0.375:4 & 1:0.75:4) were selected and samples were prepared accordingly. The major properties investigated were compressive strength, resistance to degradation and infiltration rate along with density and void content. It was found that with the increasing amount of fine aggregate compressive strength, density and degradation resistance increase, whereas void content and infiltration rate decrease. From the study, porous concrete of required infiltration rate and degradation resistance with adequate compressive strength was recommended. It was observed that the limiting factor was the compressive strength as the other criteria were fulfilled by all three mixes.