Effect of Nano Silica on Mechanical Properties and Durability of Normal Strength Concrete

Archives of civil engineering

N.R. IyerDirector, CSIR-SERC, Chennai CSIR - Structural Engineering Research Centre, CSIR Campus, Taramani, Chennai-600113, IndiaOther articles by this author:De Gruyter OnlineGoogle Scholar¹  P.Ch. MouliProject student, CSIR-SERC, Chennai CSIR - Structural Engineering Research Centre, CSIR Campus, Taramani, Chennai-600113, IndiaOther articles by this author:De Gruyter OnlineGoogle Scholar²  S. GopinathCorresponding authorScientist, CSIR-SERC, Chennai CSIR - Structural Engineering Research Centre, CSIR Campus, Taramani, Chennai-600113, IndiaEmailOther articles by this author:De Gruyter OnlineGoogle Scholar³  S. MaheswaranScientist, CSIR-SERC, Chennai CSIR - Structural Engineering Research Centre, CSIR Campus, Taramani, Chennai-600113, IndiaOther articles by this author:De Gruyter OnlineGoogle Scholar³  A.R. MurthyScientist, CSIR-SERC, Chennai CSIR - Structural Engineering Research Centre, CSIR Campus, Taramani, Chennai-600113, IndiaOther articles by this author:De Gruyter OnlineGoogle Scholar³ 

[1] Director, CSIR-SERC, Chennai CSIR - Structural Engineering Research Centre, CSIR Campus, Taramani, Chennai-600113, India;Project student, CSIR-SERC, Chennai CSIR - Structural Engineering Research Centre, CSIR Campus, Taramani, Chennai-600113, India;Scientist, CSIR-SERC, Chennai CSIR - Structural Engineering Research Centre, CSIR Campus, Taramani, Chennai-600113, India

关键词: Keywords : Nano-silica;    Nano modified concrete;    XRD;    Compressive Strength;    Flexural Strength;    RCPT;    Cost Analysis;   

DOI  :  10.2478/v.10169-012-0023-y

学科分类：建筑学

来源: Polska Akademia Nauk * Instytut Podstawowych Problemow Techniki / Polish Academy of Sciences, Institute of Fundamental Technological Research

【 摘 要 】

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.

【 授权许可】

Unknown