A Study on the Impact of Carbon Nanotubes on the Properties of Concrete

Abstract

Ordinary concrete is widely used in construction engineering due to its high compressive strength, low cost and abundance in raw material. However, the main problem of plain concrete is weak in resistance to tensile loads; constituting a major restriction to its usage. Carbon Nanotubes (CNTs) tend to be most aspirational Nano material having favorable mechanical properties and developed aspect ratio, for reinforcing cementitious elements which are weak in tension. Nevertheless, CNTs may agglomerate within the cement matrix due to high Van der waals forces, resulting in low enhancement or even deterioration of concrete. Therefore, the objective of this literature survey is to summarize the past experimental data on the properties of concrete with carbon nanotubes. The prime objective is to identify the optimum content of CNT in concrete for improving the Compressive and Flexural strength of concrete. The Optimum Content of CNT in the concrete is the most important parameter that highly influences its mechanical properties, workability, durability and various other properties.

Experimental Investigation of Mechanical and Durability Properties of Concrete Containing Nano Silica, Alccofine and Polypropylene Fibers

“…The influence of nanosilica and alccofine improves mechanical properties (9) . It helps restrict the entry of unwanted substances such as air, water, and other chemicals into the concrete by increasing its strength and durability (10) . A combination of 25% fly ash, 10% alccofine, and 1% colloidal nanosilica improved mechanical strength and water absorption (11) .…”