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.

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Experimental Study on Effect of Replacement of Cement with Alpha Aluminium Oxide (α-Al2O3) Nanoparticles on Strength and Durability Aspects of Concrete

  • Sejal Purvang Dalal,
  • Ronak Motiani,
  • Swehi Majmundar,
  • Vanaraj Solanki

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.