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Title |
A Study on the Characteristics of High Strength Grout for Pile Connections Exposed to Sea Environments
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Authors |
손다솜(Dasom Son) ; 김범휘(Beom Hwi Kim) ; 박지윤(Jiyoon Park) ; 이종구(Chongku Yi) |
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DOI |
https://doi.org/10.4334/JKCI.2022.34.6.681 |
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Keywords |
알루미나 시멘트; 고강도 그라우트; 압축강도; 해양공사; 시공성 alumina cement; high strength grout; compressive strength; marine construction; workability |
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Abstract |
In this study, the workability (flow, setting time, heat of hydration), mechanical performance (flexural, compressive strength), and microstructure (SEM image, XRD pattern) of domestic high strength alumina cement grout (H1, H2) were examined in order to assess their applicability to marine construction. Based on data of the southern sea water temperature per the Korea Meteorological Administration, the range of 5~20 °C was selected as the curing temperature variable, and fresh water and seawater curing conditions were also considered. The results indicate that both H1 and H2 satisfy the performance requirement set by KS F 4044. However, it is noted that the compressive strength of the grout can decrease from ±5 to 18 % when cured in sea water, as compared to those cured in tap water. The change in the compressive strength, with curing conditions, is presumably attributed to CaO/Al2O3 and Al2O3/SO3 ratios.
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