Effect of saturation on liquefaction properties of various volcanic ash coarse-grained soils under unsaturated conditions
Saturated and unsaturated cyclic shear tests were conducted on six types of volcanic ash coarse-grained soils distributed in Japan to determine cyclic shear deformation characteristics and liquefaction characteristics with decreasing saturation. The test results showed that the liquefaction resistan...
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| Veröffentlicht in: | Japanese Geotechnical Journal 2023/06/01, Vol.18(2), pp.211-222 |
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| creator | YOSHIWARA, Ryu UNNO, Toshiyasu MATSUMARU, Takaki MIDORIKAWA, Yusuke |
| description | Saturated and unsaturated cyclic shear tests were conducted on six types of volcanic ash coarse-grained soils distributed in Japan to determine cyclic shear deformation characteristics and liquefaction characteristics with decreasing saturation. The test results showed that the liquefaction resistance increased with decreasing saturation except for the bora, which is a pyroclastic fall deposit. However, the increasing tendency is insensitive in relation to the medium density Toyoura sand, and liquefaction resistance due to reduced saturation does not increase as much as in the medium density Toyoura sand. Shikotsu pumice flow deposit and Shirasu, which is the pyroclastic flow deposits, the tendency of increasing liquefaction resistance in the 80% to 70% saturation range was sensitive to the pyroclastic fall deposits in the pyroclastic flow deposits, and the increase in liquefaction resistance with decreasing saturation was greater in the pyroclastic flow deposits with higher initial fine-grained content than in the falling pyroclastic deposits. Bora showed little change in liquefaction resistance with decreasing saturation and no clear increasing tendency. |
| doi_str_mv | 10.3208/jgs.18.211 |
| format | Article |
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The test results showed that the liquefaction resistance increased with decreasing saturation except for the bora, which is a pyroclastic fall deposit. However, the increasing tendency is insensitive in relation to the medium density Toyoura sand, and liquefaction resistance due to reduced saturation does not increase as much as in the medium density Toyoura sand. Shikotsu pumice flow deposit and Shirasu, which is the pyroclastic flow deposits, the tendency of increasing liquefaction resistance in the 80% to 70% saturation range was sensitive to the pyroclastic fall deposits in the pyroclastic flow deposits, and the increase in liquefaction resistance with decreasing saturation was greater in the pyroclastic flow deposits with higher initial fine-grained content than in the falling pyroclastic deposits. Bora showed little change in liquefaction resistance with decreasing saturation and no clear increasing tendency.</description><identifier>ISSN: 1880-6341</identifier><identifier>EISSN: 1880-6341</identifier><identifier>DOI: 10.3208/jgs.18.211</identifier><language>eng ; jpn</language><publisher>Tokyo: The Japanese Geotechnical Society</publisher><subject>Bora ; Coarse-grained soils ; Deformation ; Density ; Deposits ; Liquefaction ; Local winds ; Pumice ; Pyroclastic flow ; Sand ; Saturation ; Shear ; Shear deformation ; Shear tests ; unsaturated soil ; Unsaturated soils ; Volcanic ash ; volcanic ash coarse-grained soil ; Volcanic soils</subject><ispartof>Japanese Geotechnical Journal, 2023/06/01, Vol.18(2), pp.211-222</ispartof><rights>2023, The Japanese Geotechnical Society</rights><rights>Copyright Japan Science and Technology Agency 2023</rights><oa>free_for_read</oa><woscitedreferencessubscribed>false</woscitedreferencessubscribed><cites>FETCH-LOGICAL-c1531-3806335110deb1be2d95ff36f77834aa15843dc3a2a4063a11cae4cf0c5b5b013</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><link.rule.ids>314,780,784,1883,27924,27925</link.rule.ids></links><search><creatorcontrib>YOSHIWARA, Ryu</creatorcontrib><creatorcontrib>UNNO, Toshiyasu</creatorcontrib><creatorcontrib>MATSUMARU, Takaki</creatorcontrib><creatorcontrib>MIDORIKAWA, Yusuke</creatorcontrib><title>Effect of saturation on liquefaction properties of various volcanic ash coarse-grained soils under unsaturated conditions</title><title>Japanese Geotechnical Journal</title><addtitle>Japanese Geotechnical Journal</addtitle><description>Saturated and unsaturated cyclic shear tests were conducted on six types of volcanic ash coarse-grained soils distributed in Japan to determine cyclic shear deformation characteristics and liquefaction characteristics with decreasing saturation. 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Bora showed little change in liquefaction resistance with decreasing saturation and no clear increasing tendency.</description><subject>Bora</subject><subject>Coarse-grained soils</subject><subject>Deformation</subject><subject>Density</subject><subject>Deposits</subject><subject>Liquefaction</subject><subject>Local winds</subject><subject>Pumice</subject><subject>Pyroclastic flow</subject><subject>Sand</subject><subject>Saturation</subject><subject>Shear</subject><subject>Shear deformation</subject><subject>Shear tests</subject><subject>unsaturated soil</subject><subject>Unsaturated soils</subject><subject>Volcanic ash</subject><subject>volcanic ash coarse-grained soil</subject><subject>Volcanic soils</subject><issn>1880-6341</issn><issn>1880-6341</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2023</creationdate><recordtype>article</recordtype><recordid>eNpNkE1LAzEQhoMoWKsXf0HAm7A1s9ndpgcPUvyCghc9h9ls0qasm5rZLfTfm9pShGG-eHiHeRm7BTGRuVAP6yVNQE1ygDM2AqVEVskCzv_1l-yKaC1ENROFGLHds3PW9Dw4TtgPEXsfOp6i9T-DdWj-5k0MGxt7b2kPbjH6MBDfhtZg5w1HWnETMJLNlhF9ZxtOwbfEh66xMeWjdNqb0DV-r0nX7MJhS_bmWMfs6-X5c_6WLT5e3-dPi8xAKSGTSlRSlgCisTXUNm9mpXOyctOpkgUilKqQjZGYY5FIBDBoC-OEKeuyFiDH7O6gm55IL1Gv12GIXTqpc1UVKp8KNUvU_YEyMRBF6_Qm-m-MOw1C763VyVoNSidrE_x4gNfU49KeUEwWmdae0CN_2psVRm07-QumDoUZ</recordid><startdate>20230601</startdate><enddate>20230601</enddate><creator>YOSHIWARA, Ryu</creator><creator>UNNO, Toshiyasu</creator><creator>MATSUMARU, Takaki</creator><creator>MIDORIKAWA, Yusuke</creator><general>The Japanese Geotechnical Society</general><general>Japan Science and Technology Agency</general><scope>AAYXX</scope><scope>CITATION</scope><scope>7TG</scope><scope>7UA</scope><scope>8FD</scope><scope>C1K</scope><scope>F1W</scope><scope>FR3</scope><scope>H96</scope><scope>KL.</scope><scope>KR7</scope><scope>L.G</scope></search><sort><creationdate>20230601</creationdate><title>Effect of saturation on liquefaction properties of various volcanic ash coarse-grained soils under unsaturated conditions</title><author>YOSHIWARA, Ryu ; UNNO, Toshiyasu ; MATSUMARU, Takaki ; MIDORIKAWA, Yusuke</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c1531-3806335110deb1be2d95ff36f77834aa15843dc3a2a4063a11cae4cf0c5b5b013</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng ; jpn</language><creationdate>2023</creationdate><topic>Bora</topic><topic>Coarse-grained soils</topic><topic>Deformation</topic><topic>Density</topic><topic>Deposits</topic><topic>Liquefaction</topic><topic>Local winds</topic><topic>Pumice</topic><topic>Pyroclastic flow</topic><topic>Sand</topic><topic>Saturation</topic><topic>Shear</topic><topic>Shear deformation</topic><topic>Shear tests</topic><topic>unsaturated soil</topic><topic>Unsaturated soils</topic><topic>Volcanic ash</topic><topic>volcanic ash coarse-grained soil</topic><topic>Volcanic soils</topic><toplevel>online_resources</toplevel><creatorcontrib>YOSHIWARA, Ryu</creatorcontrib><creatorcontrib>UNNO, Toshiyasu</creatorcontrib><creatorcontrib>MATSUMARU, Takaki</creatorcontrib><creatorcontrib>MIDORIKAWA, Yusuke</creatorcontrib><collection>CrossRef</collection><collection>Meteorological & Geoastrophysical Abstracts</collection><collection>Water Resources Abstracts</collection><collection>Technology Research Database</collection><collection>Environmental Sciences and Pollution Management</collection><collection>ASFA: Aquatic Sciences and Fisheries Abstracts</collection><collection>Engineering Research Database</collection><collection>Aquatic Science & Fisheries Abstracts (ASFA) 2: Ocean Technology, Policy & Non-Living Resources</collection><collection>Meteorological & Geoastrophysical Abstracts - Academic</collection><collection>Civil Engineering Abstracts</collection><collection>Aquatic Science & Fisheries Abstracts (ASFA) Professional</collection><jtitle>Japanese Geotechnical Journal</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>YOSHIWARA, Ryu</au><au>UNNO, Toshiyasu</au><au>MATSUMARU, Takaki</au><au>MIDORIKAWA, Yusuke</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Effect of saturation on liquefaction properties of various volcanic ash coarse-grained soils under unsaturated conditions</atitle><jtitle>Japanese Geotechnical Journal</jtitle><addtitle>Japanese Geotechnical Journal</addtitle><date>2023-06-01</date><risdate>2023</risdate><volume>18</volume><issue>2</issue><spage>211</spage><epage>222</epage><pages>211-222</pages><issn>1880-6341</issn><eissn>1880-6341</eissn><abstract>Saturated and unsaturated cyclic shear tests were conducted on six types of volcanic ash coarse-grained soils distributed in Japan to determine cyclic shear deformation characteristics and liquefaction characteristics with decreasing saturation. The test results showed that the liquefaction resistance increased with decreasing saturation except for the bora, which is a pyroclastic fall deposit. However, the increasing tendency is insensitive in relation to the medium density Toyoura sand, and liquefaction resistance due to reduced saturation does not increase as much as in the medium density Toyoura sand. Shikotsu pumice flow deposit and Shirasu, which is the pyroclastic flow deposits, the tendency of increasing liquefaction resistance in the 80% to 70% saturation range was sensitive to the pyroclastic fall deposits in the pyroclastic flow deposits, and the increase in liquefaction resistance with decreasing saturation was greater in the pyroclastic flow deposits with higher initial fine-grained content than in the falling pyroclastic deposits. Bora showed little change in liquefaction resistance with decreasing saturation and no clear increasing tendency.</abstract><cop>Tokyo</cop><pub>The Japanese Geotechnical Society</pub><doi>10.3208/jgs.18.211</doi><tpages>12</tpages><oa>free_for_read</oa></addata></record> |
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| subjects | Bora Coarse-grained soils Deformation Density Deposits Liquefaction Local winds Pumice Pyroclastic flow Sand Saturation Shear Shear deformation Shear tests unsaturated soil Unsaturated soils Volcanic ash volcanic ash coarse-grained soil Volcanic soils |
| title | Effect of saturation on liquefaction properties of various volcanic ash coarse-grained soils under unsaturated conditions |
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