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http://dx.doi.org/10.14190/JRCR.2020.8.2.190

Durability Characteristics of Ternary Cement Matrix Using Ferronickel Slag According to the Alkali-Activators  

Cho, Won-Jung (Dept. of Civil & Environmental System Eng., Hanyang University)
Park, Eon-Sang (Dept. of Construction System Eng., Soongsil Cyber University)
Jung, Ho-Seop (Dept. of Civil and Environmental Engineering, Hanyang University)
Ann, Ki-Yong (Dept. of Civil and Environmental Engineering, Hanyang University)
Publication Information
Journal of the Korean Recycled Construction Resources Institute / v.8, no.2, 2020 , pp. 190-197 More about this Journal
Abstract
This paper evaluates the mechanical properties and durability of cement matrix blended with mineral admixtures and ferronickel slag(FNS) powder which is an industrial b y-product during ferronickel smelting process. The hydration heat, pore structure, compressive strength, length change, rapid chloride penetration test(RCPT), and freezing and thawing resistance of ternary blended cement matrix were investigated and compared with ordinary portland cement matrix. The result showed that the compressive strength of ternary blended cement matrix using ferronickel slag powder and mineral mixture was low in strength compared to the reference concrete, but recovered to a certain extent by using alkali activator. Length change of cement mortar using FNS powder have shown less shrinkage occurs than the reference specimen. In addition, irrespective of using the alkali-activators, all ternary mix are indicative of the 'very low' range for chloride ion penetrability according to the ASTM C 1202, and the freeze-thaw resistance also showed excellent results.
Keywords
Ferronickel Slag(FNS); Mineral admixture; Length change; Alkali-activator; Durability;
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Times Cited By KSCI : 1  (Citation Analysis)
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