The flexural strength of green foamed concrete with polypropylene fiber

Abstract

Green concrete is made from eco-friendly waste materials. It reduces CO2 emissions and reduces water use. Normal concrete contributes about 40-50% of carbon in the air due to its production, impacting climate change. The waste material from coal combustion, like fly ash used as an additive to replace some cement in the concrete mixture. Foamed concrete is considered concrete with an eco-friendly material because it uses less aggregate and reduces water use. Concrete is weak to tensile forces; adding Fly ash can reduce pores allowing acidic substances to enter. Adding polypropylene fiber to prevent cracking makes foamed concrete more ductile. Green expanded concrete contains 0.8% foaming agent, with polypropylene fiber (PPF) variants of 0.15%, 0.2%, 0.3%, and 25% fly ash as a cement alternative. The findings of the flexural strength test demonstrate that fibers added to green foam concrete boost its flexural strength. Green foam containing polypropylene fibers produces a maximum flexural strength of 0.3% higher than green foam concrete without fibers.