{"id":72978,"date":"2022-05-01T14:32:43","date_gmt":"2022-05-01T05:32:43","guid":{"rendered":"https:\/\/www.waseda.jp\/inst\/research\/?p=72978"},"modified":"2022-07-11T15:35:15","modified_gmt":"2022-07-11T06:35:15","slug":"hydraulic-conductivity-and-x-ray-diffraction-tests-of-unsaturated-bentonites-with-a-multi-ring-and-their-predictions-by-pores-distributions%ef%bc%88published-in-engineering-geology-may-2022%ef%bc%89","status":"publish","type":"post","link":"https:\/\/www.waseda.jp\/inst\/research\/news\/72978","title":{"rendered":"Hydraulic conductivity and x-ray diffraction tests of unsaturated bentonites with a multi-ring and their predictions by pores distributions\uff08Published in Engineering Geology, May 2022\uff09"},"content":{"rendered":"\n\n\n\n\n\n\n\n\n
Journal Title
\n\/\u63b2\u8f09\u30b8\u30e3\u30fc\u30ca\u30eb\u540d<\/td>\n		Engineering Geology<\/td>\n<\/tr>\n
Publication Year and Month
\n\/\u63b2\u8f09\u5e74\u6708<\/td>\n		May, 2022<\/td>\n<\/tr>\n
\u00a0Paper Title
\n\/\u8ad6\u6587\u30bf\u30a4\u30c8\u30eb<\/td>\n		Hydraulic conductivity and x-ray diffraction tests of unsaturated bentonites with a multi-ring and their predictions by pores distributions<\/td>\n<\/tr>\n
DOI
\n\/\u8ad6\u6587DOI<\/td>\n		10.1016\/j.enggeo.2022.106738<\/a><\/td>\n<\/tr>\n
\u00a0Author of Waseda University
\n\/\u672c\u5b66\u306e\u8457\u8005<\/td>\n		RUAN, Kunlin (3rd Year Doctoral Student, Faculty of Science and Engineering):First Author, Corresponding Author<\/td>\n<\/tr>\n
Related Websites
\n\/\u95a2\u9023Web<\/td>\n		–<\/td>\n<\/tr>\n
Abstract
\n\/\u6284\u9332<\/td>\n		Following instantaneous profiling method, a new multi-ring was applied in wetting apparatus to ascertain water\u00a0diffusivities<\/a>\u00a0of three\u00a0bentonites<\/a>\u00a0(MX-80, Kunigel-V1, and Kunibon).\u00a0Hydraulic conductivities<\/a>\u00a0of unsaturated bentonites were calculated combining water diffusivities and soil water retention curves (SWRC). Basal spacings were achieved by sending slices from the multi-ring to X-ray diffraction (XRD) tests. A dual pores system was proposed: 1) micro pore (inter-layer pores); and 2)\u00a0macro pore<\/a>\u00a0(inter-particle pores and inter-aggregate pores). By discussing water flow mechanisms in bentonite, it was supposed that: moveable waters flow through macro pore. Porosity and\u00a0tortuosity<\/a>\u00a0of saturated macro pore were used instead of porosity and tortuosity of saturated total pore in traditional Kozeny-Carmen (KC) equation, which was designated as modified KC eq. A new relative permeability was raised for predicting unsaturated bentonites hydraulic conductivities. Macroporosity and macrovolumetric water content were obtained from estimated basal spacing during saturation. Comprehensive comparisons between experimental database and predictions were conducted. Results revealed that the modified KC equation can predict both saturated and unsaturated hydraulic conductivities better.<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n","protected":false},"excerpt":{"rendered":"

Journal Title \/\u63b2\u8f09\u30b8\u30e3\u30fc\u30ca\u30eb\u540d Engineering Geology Publication Year and Month \/\u63b2\u8f09\u5e74\u6708 May, 2022 \u00a0Paper Title \/\u8ad6\u6587\u30bf\u30a4\u30c8\u30eb Hy […]<\/p>\n","protected":false},"author":3,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[],"tags":[218,217],"class_list":["post-72978","post","type-post","status-publish","format-standard","hentry","tag-impact-en","tag-impact"],"acf":[],"_links":{"self":[{"href":"https:\/\/www.waseda.jp\/inst\/research\/wp-json\/wp\/v2\/posts\/72978","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.waseda.jp\/inst\/research\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.waseda.jp\/inst\/research\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.waseda.jp\/inst\/research\/wp-json\/wp\/v2\/users\/3"}],"replies":[{"embeddable":true,"href":"https:\/\/www.waseda.jp\/inst\/research\/wp-json\/wp\/v2\/comments?post=72978"}],"version-history":[{"count":2,"href":"https:\/\/www.waseda.jp\/inst\/research\/wp-json\/wp\/v2\/posts\/72978\/revisions"}],"predecessor-version":[{"id":73139,"href":"https:\/\/www.waseda.jp\/inst\/research\/wp-json\/wp\/v2\/posts\/72978\/revisions\/73139"}],"wp:attachment":[{"href":"https:\/\/www.waseda.jp\/inst\/research\/wp-json\/wp\/v2\/media?parent=72978"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.waseda.jp\/inst\/research\/wp-json\/wp\/v2\/categories?post=72978"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.waseda.jp\/inst\/research\/wp-json\/wp\/v2\/tags?post=72978"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}