Performance of nano materials for the strength development in concrete cube used as Partial replacement for cement at different temperatures

Abstract

These days, applications of nanotechnology in the field of construction are looking for a resolution to decrease the practice of cement and accordingly to decrease the discharge of pollutants in the environment. In this concern, the outcome of different proportions of the functionalized Multi - Walled Carbon Nanotubes (MWCNTs) on the alteration of mechanical properties of hardened cement paste and cubes was inspected. The addition percentages of Ordinary Portland Cement (OPC) & Portland Pozzolana Cement (PPC) with % replacement of MWCNT were 0%, 0.01%, 0.025% and 0.05%. Additionally, the Mechanical Property of the hardened Cement Concrete was inspected by the use of different tests on cement, aggregates, on fresh and hardened concrete. The concrete cube is tested in different temperatures (Room Temperature, High Temperature and Low Temperature) in this work. The results show that replacement of Ordinary Portland Cement (OPC) & Portland Pozzolana Cement (PPC) with up to 0.05% of the functionalized Carbon Nanotubes, as the optimum amount, can be considered both for enlightening mechanical properties with increase in strength up to 22% for OPC and 26% for PPC in different Temperatures (Room Temperature, High Temperature and Low Temperature).