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http://dx.doi.org/10.12989/sem.2014.51.3.403

Corrosion resistant self-compacting concrete using micro and nano silica admixtures  

Jalal, Mostafa (Young Researchers Club and Elites, Science and Research Branch, Islamic Azad University)
Publication Information
Structural Engineering and Mechanics / v.51, no.3, 2014 , pp. 403-412 More about this Journal
Abstract
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.
Keywords
concrete; nano silica; corrosion; durability; chloride penetration; resistivity;
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