2026-03-09T09:12:09Z https://jaxa.repo.nii.ac.jp/oai

oai:jaxa.repo.nii.ac.jp:00034746 2023-06-20T23:35:30Z 1887:1890 1896:1898:1899:1908

On the Compaction Tests of Soils (1st Report)(Applied Mechanics) 土の突固めについて(I)(應用力學) 最上, 武雄 久野, 悟郎 Mogami, Takeo Kuno, Goro Compaction tests of loamy soils by the method analogous to Proctor's and the simultaneous measurements of electric resistance and the penetration depth of a metallic bar were performed. The metallic bar was supported vertically on the surface of soil and was penetrated by the shock of a falling rammer from a constant height. The well known increase of the density to a maximum, and the decrease of electric resistance to an almost constant minimum when the moisture content increases, are recognized. The penetration depth has also a minimum. The density of soil increases with the compactive effort. The "optimum moisture content" decreases with decreasing rate when compactive effort increases. We analyse the compaction phenomena using the measured quantities which are in close relations to each other. 資料番号: SA3406586000 departmental bulletin paper 東京大学理工学研究所 1950-01-20 application/pdf 東京大學理工學研究所報告 7/8 3 242 248 0371-6090 AN00162611 https://jaxa.repo.nii.ac.jp/record/34746/files/SA3406586.pdf https://jaxa.repo.nii.ac.jp/records/34746 jpn