TY - JOUR N2 - Nano technology is an emerging field of interest for civil engineering application. Among the nano materials presently used in concrete, nano-silica possess more pozzolanic nature. It has the capability to react with the free lime during the cement hydration and forms additional C-S-H gel giving strength, impermeability and durability to concrete. Present paper investigates the effects of addition of nano silica in normal strength concrete. Three types of nano-silica in the form of nano suspension having different amount of silica content have been investigated. Mix design has been carried out by using particle packing method. X-Ray diffraction (XRD) analysis has been carried out to find the chemical composition of control concrete and nano modified concrete. Further, experimental investigations have been carried out to characterize the mechanical behaviour in compression, tension and flexure. It has been observed that the addition of nano-silica in normal strength concrete increased the compressive strength and decreased the spilt tensile strength and flexural strength. Also, Rapid chloride permeability test (RCPT) has been conducted to know the chloride permeability of control concrete, nano modified concrete, and nano coated concrete. It has been observed that the chloride permeability is less for nano coated concrete. L1 - http://www.journals.pan.pl/Content/83842/mainfile.pdf L2 - http://www.journals.pan.pl/Content/83842 PY - 2012 IS - No 4 EP - 444 KW - cost analysis KW - Nano-silica KW - Nano modified concrete KW - XRD KW - compressive strength KW - Flexural Strength KW - RCPT A1 - Gopinath, S. A1 - Mouli, P.Ch. A1 - Murthy, A.R. A1 - Iyer, N.R. A1 - Maheswaran, S. PB - WARSAW UNIVERSITY OF TECHNOLOGY FACULTY OF CIVIL ENGINEERING and COMMITTEE FOR CIVIL ENGINEERING POLISH ACADEMY OF SCIENCES DA - 31.12.2012 T1 - Effect of Nano Silica on Mechanical Properties and Durability of Normal Strength Concrete SP - 433 UR - http://www.journals.pan.pl/dlibra/publication/edition/83842 T2 - Archives of Civil Engineering ER -