Experimental Study on the Influence of Bagasse Ash and Fly Ash on the Durability of Hardened Concrete Properties

One of the more expensive components of concrete is cement, and demand for it is continually growing on a global scale. Therefore, in order to fulfill the growing market for concrete and keep building costs under control, it is essential to use modern waste materials, mineral admixtures, and other resources. Based on a thorough review of the literature, it was found that waste products like fly ash and bagasse ash produce concrete that is more effective and has improved properties including permeability, workability, strength, and resistance to corrosion of steel reinforcement. Therefore, FA and BA a pozzolanic substances that are utilized in place of ordinary Portland cement in the present study. Four different mixes of concrete were prepared based on fly ash (FA) and bagasse ash (BA) (mix 1—conventional concrete, mix 2—conventional concrete with 10% FA, mix 3—conventional concrete with 10% BA, and mix 4—conventional concrete with 10% FA and 10% BA). It has been noted that the RCPT values have reduced by 59 and 9% by mix 2 and 3, respectively as compared to conventional concrete at 28 days. However, the combination of 10% of FA and BA (mix 3) resulted in to decrease of 56% in comparison with standard concrete (mix 1). Additionally, it was seen that the carbonation of 5 mm on mix 2 at 90 days whereas 5 and 7 mm was observed on mix 4 at 56 and 90 days, respectively. At 28, 56, and 90 days of curing, the electrical resistivity was found to be maximum in mixes 2 and 3. The initial surface absorption test (ISAT) on mix 2, 3, and 4 were found reduced by 88, 69, and 45%, respectively, as compared to mix 1. The percentage loss of weight is found to be increased up to 51% on mix with 10% FA and BA (mix 4) as compared to mix 1.