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翻訳と辞書　辞書検索 [ 開発暫定版 ] スポンサード リンク Fall cone test ： ウィキペディア英語版 Fall cone test The Fall cone test, also called the cone penetrometer test is an alternate to the Casagrande method for measuring the Liquid Limit of a soil sample. It is often preferred to the Casagrande method because it is more repeatable and less variable with different operators. In the test, a soil sample is placed in a 55 mm diameter, 40 mm deep metal cup. A stainless steel cone weighing 80 g (including the shaft) and having a 30° angle is positioned so that its tip just touches the sample. The cone is released for 5 seconds so that it may penetrate the soil. The liquid limit is defined as the water content of the soil which allows the cone to penetrate exactly 20 mm during that period of time. Because it is difficult to obtain a test with exactly 20 mm penetration, the procedure is performed multiple times with a range of water contents and the results are interpolated.〔Powrie, W., Spon Press, 2004, ''Soil Mechanics - 2nd ed'' ISBN 0-415-31156-X〕 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Fall cone test」の詳細全文を読む スポンサード リンク 翻訳と辞書 : 翻訳のためのインターネットリソース Copyright(C) kotoba.ne.jp 1997-2016. All Rights Reserved.