{"id":"https://openalex.org/W7225616587","doi":"https://doi.org/10.1080/00223131.2026.2759178","title":"Estimating dry density of bentonite blocks during swelling for geological disposal tunnel closure using actively heated fiber-optic distributed temperature sensing: laboratory validation","display_name":"Estimating dry density of bentonite blocks during swelling for geological disposal tunnel closure using actively heated fiber-optic distributed temperature sensing: laboratory validation","publication_year":2026,"publication_date":"2026-11-09","ids":{"openalex":"https://openalex.org/W7225616587","doi":"https://doi.org/10.1080/00223131.2026.2759178"},"language":"en","primary_location":{"id":"doi:10.1080/00223131.2026.2759178","doi":"https://doi.org/10.1080/00223131.2026.2759178","is_oa":false,"landing_page_url":"https://doi.org/10.1080/00223131.2026.2759178","pdf_url":null,"source":{"id":"https://openalex.org/S140210197","display_name":"Journal of Nuclear Science and Technology","issn_l":"0022-3131","issn":["0022-3131","1881-1248"],"is_oa":false,"is_in_doaj":false,"is_core":true,"listed_in":["cwts-core","dongbi-b","jufo-1","norway-1","poland-70","russia-white-list-2"],"host_organization":"https://openalex.org/P4310320547","host_organization_name":"Taylor & Francis","host_organization_lineage":["https://openalex.org/P4310320547","https://openalex.org/P4310320449"],"host_organization_lineage_names":["Taylor & Francis","Informa"],"type":"journal"},"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"Journal of Nuclear Science and Technology","raw_type":"journal-article"},"volume":null,"type":"article","is_traditional":true,"indexed_in":["crossref"],"open_access":{"is_oa":false,"oa_status":"closed","oa_url":null,"any_repository_has_fulltext":false},"authorships":[{"author_position":"first","author":{"id":"https://openalex.org/A5161329946","display_name":"Hisayuki Watanabe","orcid":"https://orcid.org/0009-0007-5509-3434","observed_orcids":["https://orcid.org/0009-0007-5509-3434"]},"institutions":[{"id":"https://openalex.org/I120611246","display_name":"Obayashi (Japan)","ror":"https://ror.org/027qqvd10","country_code":"JP","type":"company","lineage":["https://openalex.org/I120611246"]}],"countries":["JP"],"is_corresponding":true,"raw_author_name":"Hisayuki Watanabe","raw_affiliation_strings":["Obayashi Corporation"],"raw_orcid":"https://orcid.org/0009-0007-5509-3434","affiliations":[{"raw_affiliation_string":"Obayashi Corporation","institution_ids":["https://openalex.org/I120611246"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5080924231","display_name":"Yohei Nakamichi","orcid":"https://orcid.org/0000-0003-1118-2586","observed_orcids":["https://orcid.org/0000-0003-1118-2586"]},"institutions":[{"id":"https://openalex.org/I120611246","display_name":"Obayashi (Japan)","ror":"https://ror.org/027qqvd10","country_code":"JP","type":"company","lineage":["https://openalex.org/I120611246"]}],"countries":["JP"],"is_corresponding":false,"raw_author_name":"Yohei Nakamichi","raw_affiliation_strings":["Geotechnical Engineering Department, Technical Research Institute, Obayashi Corporation"],"raw_orcid":"https://orcid.org/0000-0003-1118-2586","affiliations":[{"raw_affiliation_string":"Geotechnical Engineering Department, Technical Research Institute, Obayashi Corporation","institution_ids":["https://openalex.org/I120611246"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5052230740","display_name":"Toshihiro Sakaki","orcid":"https://orcid.org/0000-0001-8446-8548","observed_orcids":["https://orcid.org/0000-0001-8446-8548"]},"institutions":[],"countries":[],"is_corresponding":false,"raw_author_name":"Toshihiro Sakaki","raw_affiliation_strings":["ESE Consulting LLC"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"ESE Consulting LLC","institution_ids":[]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5112621953","display_name":"Hirokazu Fujii","orcid":null,"observed_orcids":[]},"institutions":[{"id":"https://openalex.org/I4405265214","display_name":"Lazoc Incorporated (Japan)","ror":"https://ror.org/046bxhv17","country_code":"JP","type":"company","lineage":["https://openalex.org/I4405265214"]}],"countries":["JP"],"is_corresponding":false,"raw_author_name":"Hirokazu Fujii","raw_affiliation_strings":["LAZOC Incorporated"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"LAZOC Incorporated","institution_ids":["https://openalex.org/I4405265214"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5109555887","display_name":"Ryo Yasuda","orcid":"https://orcid.org/0009-0009-4574-5587","observed_orcids":["https://orcid.org/0009-0009-4574-5587"]},"institutions":[{"id":"https://openalex.org/I4405254949","display_name":"Radioactive Waste Management Funding and Research Center","ror":"https://ror.org/02e6jwz14","country_code":"JP","type":"facility","lineage":["https://openalex.org/I4405254949"]}],"countries":["JP"],"is_corresponding":false,"raw_author_name":"Ryo Yasuda","raw_affiliation_strings":["Radioactive Waste Management Funding and Research Center"],"raw_orcid":"https://orcid.org/0009-0009-4574-5587","affiliations":[{"raw_affiliation_string":"Radioactive Waste Management Funding and Research Center","institution_ids":["https://openalex.org/I4405254949"]}]},{"author_position":"last","author":{"id":"https://openalex.org/A5161348229","display_name":"Takayuki Abe","orcid":null,"observed_orcids":[]},"institutions":[{"id":"https://openalex.org/I4405254949","display_name":"Radioactive Waste Management Funding and Research Center","ror":"https://ror.org/02e6jwz14","country_code":"JP","type":"facility","lineage":["https://openalex.org/I4405254949"]}],"countries":["JP"],"is_corresponding":false,"raw_author_name":"Takayuki Abe","raw_affiliation_strings":["Radioactive Waste Management Funding and Research Center"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Radioactive Waste Management Funding and Research Center","institution_ids":["https://openalex.org/I4405254949"]}]}],"institutions":[],"countries_distinct_count":1,"institutions_distinct_count":3,"corresponding_author_ids":["https://openalex.org/A5161329946"],"corresponding_institution_ids":["https://openalex.org/I120611246"],"apc_list":null,"apc_paid":null,"fwci":0.0,"has_fulltext":false,"cited_by_count":0,"citation_normalized_percentile":{"value":0.0,"is_in_top_1_percent":false,"is_in_top_10_percent":false},"cited_by_percentile_year":null,"biblio":{"volume":null,"issue":null,"first_page":"1","last_page":"14"},"is_retracted":false,"is_paratext":false,"is_xpac":false,"primary_topic":{"id":"https://openalex.org/T10161","display_name":"Rock Mechanics and Modeling","score":0.2768999934196472,"subfield":{"id":"https://openalex.org/subfields/2211","display_name":"Mechanics of Materials"},"field":{"id":"https://openalex.org/fields/22","display_name":"Engineering"},"domain":{"id":"https://openalex.org/domains/3","display_name":"Physical Sciences"}},"topics":[{"id":"https://openalex.org/T10161","display_name":"Rock Mechanics and Modeling","score":0.2768999934196472,"subfield":{"id":"https://openalex.org/subfields/2211","display_name":"Mechanics of Materials"},"field":{"id":"https://openalex.org/fields/22","display_name":"Engineering"},"domain":{"id":"https://openalex.org/domains/3","display_name":"Physical Sciences"}},{"id":"https://openalex.org/T10205","display_name":"Advanced Fiber Optic Sensors","score":0.121799997985363,"subfield":{"id":"https://openalex.org/subfields/2208","display_name":"Electrical and Electronic Engineering"},"field":{"id":"https://openalex.org/fields/22","display_name":"Engineering"},"domain":{"id":"https://openalex.org/domains/3","display_name":"Physical Sciences"}},{"id":"https://openalex.org/T10716","display_name":"Soil and Unsaturated Flow","score":0.11320000141859055,"subfield":{"id":"https://openalex.org/subfields/2205","display_name":"Civil and Structural Engineering"},"field":{"id":"https://openalex.org/fields/22","display_name":"Engineering"},"domain":{"id":"https://openalex.org/domains/3","display_name":"Physical Sciences"}}],"keywords":[{"id":"https://openalex.org/keywords/bentonite-swelling","display_name":"bentonite swelling","score":0.8830000162124634},{"id":"https://openalex.org/keywords/thermal-conductivity","display_name":"thermal conductivity","score":0.9319999814033508},{"id":"https://openalex.org/keywords/bentonite-sand-mixture","display_name":"sand-bentonite mixtures","score":0.871999979019165},{"id":"https://openalex.org/keywords/radioactive-waste-disposal","display_name":"radioactive waste disposal","score":0.6060000061988831},{"id":"https://openalex.org/keywords/water-injection","display_name":"water injection","score":0.6420000195503235},{"id":"https://openalex.org/keywords/degree-of-saturation","display_name":"degree of saturation","score":0.6980000138282776},{"id":"https://openalex.org/keywords/calibration-data","display_name":"calibration data","score":0.5339999794960022}],"concepts":[{"id":"https://openalex.org/C97346530","wikidata":"https://www.wikidata.org/wiki/Q487005","display_name":"Thermal conductivity","level":2,"score":0.8037999868392944},{"id":"https://openalex.org/C2777979977","wikidata":"https://www.wikidata.org/wiki/Q380149","display_name":"Bentonite","level":2,"score":0.760200023651123},{"id":"https://openalex.org/C2778540859","wikidata":"https://www.wikidata.org/wiki/Q152234","display_name":"Swelling","level":2,"score":0.6545000076293945},{"id":"https://openalex.org/C165838908","wikidata":"https://www.wikidata.org/wiki/Q736777","display_name":"Calibration","level":2,"score":0.6299999952316284},{"id":"https://openalex.org/C192562407","wikidata":"https://www.wikidata.org/wiki/Q228736","display_name":"Materials science","level":0,"score":0.5863000154495239},{"id":"https://openalex.org/C9930424","wikidata":"https://www.wikidata.org/wiki/Q7426587","display_name":"Saturation (graph theory)","level":2,"score":0.5407999753952026},{"id":"https://openalex.org/C204530211","wikidata":"https://www.wikidata.org/wiki/Q752823","display_name":"Thermal","level":2,"score":0.5151000022888184},{"id":"https://openalex.org/C20556612","wikidata":"https://www.wikidata.org/wiki/Q4469374","display_name":"Volume (thermodynamics)","level":2,"score":0.507099986076355},{"id":"https://openalex.org/C131540310","wikidata":"https://www.wikidata.org/wiki/Q907564","display_name":"Conductivity","level":2,"score":0.4584999978542328},{"id":"https://openalex.org/C159985019","wikidata":"https://www.wikidata.org/wiki/Q181790","display_name":"Composite material","level":1,"score":0.44290000200271606},{"id":"https://openalex.org/C72293138","wikidata":"https://www.wikidata.org/wiki/Q909741","display_name":"Temperature measurement","level":2,"score":0.4113999903202057},{"id":"https://openalex.org/C146834321","wikidata":"https://www.wikidata.org/wiki/Q2979672","display_name":"Closure (psychology)","level":2,"score":0.4056999981403351},{"id":"https://openalex.org/C63184880","wikidata":"https://www.wikidata.org/wiki/Q2783041","display_name":"Hydraulic conductivity","level":3,"score":0.35580000281333923},{"id":"https://openalex.org/C113196181","wikidata":"https://www.wikidata.org/wiki/Q485223","display_name":"Analytical Chemistry (journal)","level":2,"score":0.35040000081062317},{"id":"https://openalex.org/C199289684","wikidata":"https://www.wikidata.org/wiki/Q83353","display_name":"Mineralogy","level":1,"score":0.3314000070095062},{"id":"https://openalex.org/C47463417","wikidata":"https://www.wikidata.org/wiki/Q6583695","display_name":"Thermal expansion","level":2,"score":0.27549999952316284},{"id":"https://openalex.org/C39353612","wikidata":"https://www.wikidata.org/wiki/Q5283759","display_name":"Atmospheric temperature range","level":2,"score":0.2685000002384186},{"id":"https://openalex.org/C79388206","wikidata":"https://www.wikidata.org/wiki/Q5251846","display_name":"Degree of saturation","level":3,"score":0.2671000063419342},{"id":"https://openalex.org/C69990965","wikidata":"https://www.wikidata.org/wiki/Q65402698","display_name":"Electrical resistivity and conductivity","level":2,"score":0.2669000029563904},{"id":"https://openalex.org/C102232406","wikidata":"https://www.wikidata.org/wiki/Q7783035","display_name":"Thermal conductivity measurement","level":3,"score":0.25540000200271606},{"id":"https://openalex.org/C187320778","wikidata":"https://www.wikidata.org/wiki/Q1349130","display_name":"Geotechnical engineering","level":1,"score":0.2515999972820282}],"mesh":[],"locations_count":1,"locations":[{"id":"doi:10.1080/00223131.2026.2759178","doi":"https://doi.org/10.1080/00223131.2026.2759178","is_oa":false,"landing_page_url":"https://doi.org/10.1080/00223131.2026.2759178","pdf_url":null,"source":{"id":"https://openalex.org/S140210197","display_name":"Journal of Nuclear Science and Technology","issn_l":"0022-3131","issn":["0022-3131","1881-1248"],"is_oa":false,"is_in_doaj":false,"is_core":true,"listed_in":["cwts-core","dongbi-b","jufo-1","norway-1","poland-70","russia-white-list-2"],"host_organization":"https://openalex.org/P4310320547","host_organization_name":"Taylor & Francis","host_organization_lineage":["https://openalex.org/P4310320547","https://openalex.org/P4310320449"],"host_organization_lineage_names":["Taylor & Francis","Informa"],"type":"journal"},"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"Journal of Nuclear Science and Technology","raw_type":"journal-article"}],"best_oa_location":null,"sustainable_development_goals":[{"score":0.428600013256073,"id":"https://metadata.un.org/sdg/9","display_name":"Industry, innovation and infrastructure"}],"study_designs":[],"awards":[],"funders":[],"has_content":{"pdf":false,"grobid_xml":false},"content_urls":null,"referenced_works_count":11,"referenced_works":["https://openalex.org/W2045779053","https://openalex.org/W2065787022","https://openalex.org/W2067724804","https://openalex.org/W2089931406","https://openalex.org/W2091021867","https://openalex.org/W2890444078","https://openalex.org/W2989003378","https://openalex.org/W3097491675","https://openalex.org/W3111293462","https://openalex.org/W4212789308","https://openalex.org/W4280626482"],"related_works":["https://openalex.org/W3004357565","https://openalex.org/W2890444078","https://openalex.org/W4389050698","https://openalex.org/W4212789308","https://openalex.org/W4317214134","https://openalex.org/W7212465406","https://openalex.org/W7217479415","https://openalex.org/W3194005257","https://openalex.org/W2923729495","https://openalex.org/W4225263701"],"abstract_inverted_index":{"Actively":[0],"heated":[1],"fiber-optic":[2,13],"distributed":[3],"temperature":[4,17,44],"sensing":[5],"(a-DTS)":[6],"is":[7],"a":[8,62],"method":[9,24],"that":[10],"uses":[11],"heatable":[12],"cables":[14],"to":[15,27,66,211],"measure":[16],"distributions.":[18],"In":[19],"this":[20],"study,":[21],"the":[22,29,52,68,106,116,132,142,149,163,205,215,220],"a-DTS":[23],"was":[25,40,49,59,201,209,223],"applied":[26],"monitor":[28,67],"swelling":[30,69],"of":[31,70,73,76,118,130,183,193,217,219],"bentonite":[32],"blocks":[33,71],"and":[34,46,83,103,111,124,146,162,214],"validate":[35],"its":[36],"effectiveness.":[37],"Thermal":[38,121],"conductivity":[39,122,139,156,176],"calculated":[41],"from":[42,51,80,90,198],"measured":[43,91],"changes,":[45],"dry":[47,101,184],"density":[48],"estimated":[50,89],"obtained":[53,98,108,197],"thermal":[54,92,138,155,175],"conductivity.":[55],"A":[56],"laboratory":[57],"experiment":[58],"conducted":[60],"using":[61,94,194],"cylindrical":[63],"experimental":[64],"setup":[65],"made":[72],"two":[74],"types":[75],"bentonite-sand":[77,143],"mixtures":[78,144],"prepared":[79],"Kunigel":[81],"V1":[82],"silica":[84],"sand.":[85],"Dry":[86],"densities":[87,102,185],"were":[88,171],"conductivities":[93],"calibration":[95,195],"data":[96,196],"separately":[97],"at":[99],"low":[100],"compared":[104],"with":[105,186],"values":[107],"by":[109],"dismantling":[110],"sampling":[112],"585":[113],"days":[114],"after":[115],"start":[117],"water":[119,207],"injection.":[120],"measurements":[123],"visual":[125,160,178],"observations":[126],"identified":[127],"three":[128],"phases":[129],"swelling:":[131],"Primary":[133],"Sealing":[134,151],"Phase,":[135,152,165],"in":[136,153,166,173],"which":[137,154,167],"decreased":[140],"as":[141],"swelled":[145],"displaced":[147],"water;":[148],"Secondary":[150],"increased":[157],"without":[158],"significant":[159,169],"changes;":[161],"Slow":[164],"no":[168],"changes":[170],"observed":[172],"either":[174],"or":[177],"appearance.":[179],"However,":[180],"quantitative":[181],"estimation":[182],"sufficient":[187,210],"accuracy":[188],"remains":[189],"difficult.":[190],"The":[191],"assumption":[192],"saturated":[199],"specimens":[200],"considered":[202],"reasonable":[203],"because":[204],"injected":[206],"volume":[208],"achieve":[212],"saturation":[213,218],"degree":[216],"dismantled":[221],"samples":[222],"approximately":[224],"100%.":[225]},"counts_by_year":[],"updated_date":"2026-11-11T12:16:26.678958","created_date":"2026-11-10T00:00:00"}
