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http://dx.doi.org/10.14190/JRCR.2022.10.4.482

Durability Properties of Ultra Rapid Hardening Mortar Produced with Alumina-based Binder for Repairing Sewage Treatment Pipes  

Eun-Ho, Kim (Department of Civil Engineering, Chungnam National University)
Byung-Jae, Lee (Department of Civil Engineering, Daejeon University)
Sun-Mok, Lee (Technolgy Sales & Maketing, JW Materials Co., Ltd.)
Yun-Yong, Kim (Department of Civil Engineering, Chungnam National University)
Publication Information
Journal of the Korean Recycled Construction Resources Institute / v.10, no.4, 2022 , pp. 482-488 More about this Journal
Abstract
In this study, the durability of ultra rapid hardening mortar for sewage pipe was evaluated by type of mortar binder. As a result of analyzing the internal structure for each type of mortar, it was confirmed that Al2(OH)3 was generated in the internal structure of the CAC-based mortar, and its corrosion resistance was superior to that of other types of mortar. As a result of the compressive strength test, OPC had the tsmallest strength, followed by CAC100 > CAC100P > CAC80. This trend was similar to the previous study results. Chloride ion penetration resistance and freeze-thaw test showed similar trends. That is, CAC and C12A7 were better than OPC, and CSA was worse than OPC. This is mostly beacuse of cracks caused by expansion of CSA-based mortar. CAC100P mix showed the best chemical resistance. It is thought that this is because the alumina gel formed inside the mortar and the polymer combine to make the internal structure more dense.
Keywords
Sewer pipe; Repair mortar; Anti-washout; Durability;
Citations & Related Records
Times Cited By KSCI : 3  (Citation Analysis)
연도 인용수 순위
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