Effect of nano-silica in concrete; a review. (5th April 2021)

• Record Type: Journal Article
• Authors: P. P., Abhilash; Nayak, Dheeresh Kumar; Sangoju, Bhaskar; Kumar, Rajesh; Kumar, Veerendra
• Is Part Of: Construction & building materials. Volume 278(2021)
• Publication Date: 2021-04-05
• Subjects: Nano-silica -- Pozzolanic reaction -- Filler effect -- Mechanical properties -- Durability properties -- Hydration -- Microstructure -- Porosity -- Carbonation; Building materials -- Periodicals; 624.18
• DOI: 10.1016/j.conbuildmat.2021.122347
• Languages: English
• ISSNs: 0950-0618

Abstract

Highlights: Nano-silica up to 3% can enhance mechanical and durability properties of concrete. Concrete compressive strength increases as the content of nano-silica increases. Nano-silica has a very high pozzolanic activity. Filling effect of nano-silica notably influences the refinement of pore structure. Abstract: Concrete has a substantial impact on the environment as the cement, whose production involves a large amount of CO2, is its main ingredient. Enhancing the durability parameters of the concrete structures can reduce their impact on the environment. Incorporating a small amount of nanoparticles in concrete can modify the nano-structure of cementitious materials, and thus procure high durability. Recently nano-silica has gained particular attention compared to conventional mineral addition due to its better performance in concrete. This review paper presents a study of the effects of nano-silica on the mechanical properties, durability parameters, and microstructural characteristics of the concrete.