Techno Press
Techno Press

Structural Engineering and Mechanics   Volume 51, Number 3, August10 2014, pages 403-412
DOI: http://dx.doi.org/10.12989/sem.2014.51.3.403
 
Corrosion resistant self-compacting concrete using micro and nano silica admixtures
Mostafa Jalal

 
Abstract     [Full Text]
    In this paper, enhancement of corrosion and chloride resistance of high performance self compacting concrete (SCC) through incorporating nanosilica into the binder has been investigated. For this purpose, different mixtures were designed with different amounts of silica fume and nano silica admixtures. Different binder contents were also investigated to observe the binder content effect on the concrete properties. Corrosion behavior was evaluated by chloride penetration and resitivity tests. Water absorption and capillary absorption were also measured as other durability-related properties. The results showed that water absorption, capillary absorption and Cl ion percentage decreased rather significantly in the mixtures containing admixtures especially blend of silica fume and nano silica. By addition of the admixtures, resistivity of the SCC mixtures increased which can lead to reduction of corrosion probability.
 
Key Words
    concrete; nano silica; corrosion; durability; chloride penetration; resistivity
 
Address
Mostafa Jalal : Young Researchers Club and Elites, Science and Research Branch, Islamic Azad University, Tehran, Iran
 

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