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Title |
Compressive Strength of Horizontal Joint in Precast Concrete Wall System
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Authors |
서수연(Soo-Yeon Seo) ; 윤현도(Hyun-Do Yun) |
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DOI |
https://doi.org/10.4334/JKCI.2025.37.5.609 |
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Keywords |
PC 벽식구조; 수평접합부; 압축강도; 기준식; 그라우트 폭 확장계수 precast concrete wall structure; horizontal joint; compressive strength; code equations; grout width expansion factor |
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Abstract |
Code equations for calculating the compressive strength of horizontal joints in precast concrete wall structures were reviewed, and the influence of major factors affecting compressive strength was identified based on the results of 100 horizontal joint compression performance tests conducted previously. Additionally, these data were used to assess the suitability of current code equations. The findings revealed that the PCI method provided the most reasonable predictions. However, for both internal and external joints, the compressive strength was often inaccurately predicted and not consistently evaluated on the conservative side. Based on data analysis, a modified equation is proposed for the PCI method to properly account for the grout width expansion factor. The use of this modified equation enables more accurate estimation of the compressive strength of horizontal joints.
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