Rapid Compression Test of Cement-treated Sands

Tsutomu Namikawa, Hayato Usui

研究成果: Conference contribution

抄録

During earthquakes, dynamic loads caused by inertia forces are applied to ground improvements by deep mixing method. Therefore, the internal stability of cement-treated soil ground subjected to the seismic loading should be examined in the seismic design of the ground improvement. The speed of the loading caused by the inertia forces during earthquakes is much faster than that in the standard unconfined compression test. It is well known that the loading speed affects the strength of materials. Therefore, the strength under the rapid loading conditions is required to design the ground improvements rationally. The unconfined compression tests of cement-treated soils were conducted under the rapid loading conditions in this study. The rapid load in the shape of a solitary wave is applied to the specimens. The unconfined compression tests with the strain rate of 1%/min were also conducted for comparison. The experimental result indicates that the rapid loading increases the strength by about 20% as compared with the strain controlled loading. The test results were analyzed with the statistical manner to evaluate the variation of the strength of the cement-treated soil specimens prepared in a laboratory. The statistical analysis provides the good understanding of the influence of the data variation on the relationship between the strengths obtained from the rapid loading and strain controlled tests.

本文言語English
ホスト出版物のタイトルSustainable Design and Construction for Geomaterials and Geostructures - Proceedings of the 5th GeoChina International Conference 2018 – Civil Infrastructures Confronting Severe Weathers and Climate Changes
ホスト出版物のサブタイトルFrom Failure to Sustainability, 2018 in HangZhou, China
編集者Behzad Fatahi, Aron Mwanza, Dave T. Chang
出版社Springer Science and Business Media B.V.
ページ26-35
ページ数10
ISBN(印刷版)9783319957524
DOI
出版ステータスPublished - 2019
イベント5th GeoChina International Conference on Civil Infrastructures Confronting Severe Weathers and Climate Changes: From Failure to Sustainability, 2018 - HangZhou, China
継続期間: 2018 7 232018 7 25

出版物シリーズ

名前Sustainable Civil Infrastructures
ISSN(印刷版)2366-3405
ISSN(電子版)2366-3413

Conference

Conference5th GeoChina International Conference on Civil Infrastructures Confronting Severe Weathers and Climate Changes: From Failure to Sustainability, 2018
CountryChina
CityHangZhou
Period18/7/2318/7/25

ASJC Scopus subject areas

  • Civil and Structural Engineering
  • Computational Mechanics
  • Geotechnical Engineering and Engineering Geology
  • Environmental Engineering

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