日本語フィールド
著者：Sindete, M. J., Usui, H., Some, D. D., Afif, F. M. and Hino, T.題名：Unconfined compressive and splitting tensile strength of plate-like improved clay発表情報：Proceeding of the 21st Southeast Asian Geotechnical Conference and 4th AGSSEA Conference (SEAGC-AGSSEA 2023)キーワード：Soft ground, Plate-like improved clay, Unconfined compressive strength, Splitting tensile strength概要：抄録：Road embankment subsidence in lowland areas of Saga Prefecture has been effectively addressed since 2004 through a combined approach involving soil improved columns and plate-like improved clay. Despite this progress, there is no established standard for quality control of plate-like improved clay in the construction field. In response, this study focuses on investigating the relationship between unconfined compressive strength (qu) and splitting tensile strength (σt) for shallow ground improvement techniques using Hasuike clay in Saga Prefecture. The strength ratio (α) of qu and σt (α = σt/qu) is evaluated for quality control purposes. A total of 144 Plate-like improved specimens were prepared using Hasuike clay, incorporating varying amounts of a cement-based binder while maintaining a water-cement (W/C) ratio of 1. After a curing period of 28 days, the specimens underwent unconfined compressive and splitting tensile tests according to the Japanese Geotechnical Society 0821-2020 guidelines. A statistical analysis of the collected data revealed variations in the strength ratio (α) based on the minimum, mean, and maximum values. Increasing the quantity of the binder led to higher mean values of both qu and σt, but the variations in strength ratios were more pronounced for σt than for qu. These outcomes underscore the importance of standardizing techniques to minimize variations in strength ratio values and enhance quality control. By considering the Coefficient of Variation (COV), this research aims to enhance the reliability of findings and provide important perceptions for practitioners and engineers seeking to effectively address settlement issues in lowland areas using plate-like improved soil.英語フィールド
Author：Sindete, M. J., Usui, H., Some, D. D., Afif, F. M. and Hino, T.Title：Unconfined compressive and splitting tensile strength of plate-like improved clayAnnouncement information:Proceeding of the 21st Southeast Asian Geotechnical Conference and 4th AGSSEA Conference (SEAGC-AGSSEA 2023)Keyword：Soft ground, Plate-like improved clay, Unconfined compressive strength, Splitting tensile strengthAn abstract：Road embankment subsidence in lowland areas of Saga Prefecture has been effectively addressed since 2004 through a combined approach involving soil improved columns and plate-like improved clay. Despite this progress, there is no established standard for quality control of plate-like improved clay in the construction field. In response, this study focuses on investigating the relationship between unconfined compressive strength (qu) and splitting tensile strength (σt) for shallow ground improvement techniques using Hasuike clay in Saga Prefecture. The strength ratio (α) of qu and σt (α = σt/qu) is evaluated for quality control purposes. A total of 144 Plate-like improved specimens were prepared using Hasuike clay, incorporating varying amounts of a cement-based binder while maintaining a water-cement (W/C) ratio of 1. After a curing period of 28 days, the specimens underwent unconfined compressive and splitting tensile tests according to the Japanese Geotechnical Society 0821-2020 guidelines. A statistical analysis of the collected data revealed variations in the strength ratio (α) based on the minimum, mean, and maximum values. Increasing the quantity of the binder led to higher mean values of both qu and σt, but the variations in strength ratios were more pronounced for σt than for qu. These outcomes underscore the importance of standardizing techniques to minimize variations in strength ratio values and enhance quality control. By considering the Coefficient of Variation (COV), this research aims to enhance the reliability of findings and provide important perceptions for practitioners and engineers seeking to effectively address settlement issues in lowland areas using plate-like improved soil.