Experimental Study on Effect of Replacement of Cement with Alpha Aluminium Oxide (α-Al2O3) Nanoparticles on Strength and Durability Aspects of Concrete
摘要
This paper presents the experimental study on the workability, strength and durability aspects of concrete in which cement is replaced with alpha aluminium oxide nanoparticles (α-Al2O3). The lab synthesized α-Al2O3 nanoparticles were replaced at dosages 0.5%, 1%, 1.5%, 2% and 2.5% of cement content in a concrete composite designed for a target strength of 30 MPa. The results show a reduced setting time along with a reduction in workability but a higher gain in the initial compressive strength. The code compliant as well as target compressive strength is achieved in the α-Al2O3 nanoparticle induced concrete mixes with an increased tensile and flexural strength while enhancing the durability. The study suggests that α-Al2O3 nanoparticles may be useful for early achievement of compressive strength along with a better flexural and tensile strength.