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Pro-Ecological Utilization of Crushed Concrete as an Aggregate to Improve the Compressive Strength with Steel Fibers and Styrene-Butadiene Rubber Latex

Awchat Ganesh D., Monde Amruta S., Sirsikar Rajat A., Dhanjode Gopal C., Tayade Suhas E., Rathore Shailendra S.

Ecological Engineering & Environmental Technology

2022

Vol. 23, iss. 3

95--105

Demolition of old structures and pro-ecological utilisation of such demolished concrete waste materials must be considered an important ecological issue that helps conserve non-renewable natural resources. Crushed concrete in the form of recycled coarse aggregate (RCA), steel fibres (SF) of 30–50 kg/m3 and styrene-butadiene rubber (SBR) latex of 5%, 10%, and 15% by cement weight attempted to strengthen the strength in compression of polymer modified steel fiber reinforced crushed concrete (PMSFRCC). Ninety-nine cubes each of M20, M25, M30, and M40 grade were cast separately to assess the strength in compression of natural aggregate concrete (NAC), crushed concrete (CC), and PMSFRCC. According to the experimental results, PMSFRCC with SF 30 kg/m3 and SBR Latex 5% by weight of cement improves compressive strength by 8.92% & 6.22% in mix-1, 7.63% & 5.45% in mix-2, 4.27% & 7.87% in mix-3, and 9.87% & 7.46% in mix-4 when compared to NAC at 28 and 90 days.It reflects significant improvement and validation of utilisation of CC as a potential source of an aggregate to improve compressive strength for the desired purpose.