this to clarify the mechanical characteristics of “Tataki”, or artificial stone, made from waste of the siliceous tuff, a series of laboratory tests are carried out. The experiments involve unconfined compression test, bending test and needle penetration test. From the experimental results, the in-situ applicability of Tataki as geomaterials or civil engineering materials is discussed. The following conclusions are obtained from the present study: (1) Unconfined compressive strength of Tataki
{"title":"MECHANICAL CHARACTERISTICS OF TATAKI, OR ARTIFICIAL STONE, MADE FROM WASTE OF SILICEOUS TUFF AS GEOMATERIALS","authors":"H. Shigematsu","doi":"10.2208/jscejge.76.1_67","DOIUrl":"https://doi.org/10.2208/jscejge.76.1_67","url":null,"abstract":"this to clarify the mechanical characteristics of “Tataki”, or artificial stone, made from waste of the siliceous tuff, a series of laboratory tests are carried out. The experiments involve unconfined compression test, bending test and needle penetration test. From the experimental results, the in-situ applicability of Tataki as geomaterials or civil engineering materials is discussed. The following conclusions are obtained from the present study: (1) Unconfined compressive strength of Tataki","PeriodicalId":326143,"journal":{"name":"Journal of Japan Society of Civil Engineers, Ser. C (Geosphere Engineering)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115346961","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 1900-01-01DOI: 10.2208/jscejge.77.3_314
Y. Takeshita, Manami Miki, Yuijun Ikeda
{"title":"FIELD TECHNIQUE FOR MEASURING FIELD SATURATED HYDRAULIC CONDUCTIVITY BY USING SIMPLIFIED FALLING HEAD PERMEABILITY TEST BASED ON GUELPH PRESSURE INFILTROMETER","authors":"Y. Takeshita, Manami Miki, Yuijun Ikeda","doi":"10.2208/jscejge.77.3_314","DOIUrl":"https://doi.org/10.2208/jscejge.77.3_314","url":null,"abstract":"","PeriodicalId":326143,"journal":{"name":"Journal of Japan Society of Civil Engineers, Ser. C (Geosphere Engineering)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129482688","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 1900-01-01DOI: 10.2208/jscejge.76.3_295
D. Ito, H. Komine
In the high-level radioactive waste geological disposal, bentonite buffer material will be keeping exposed to complex environmental of high pressure and high temperature. Therefore, bentonite buffer material will be consolidated and its physical properties such as swelling and permeability will be changed. In this study, the authors thought that bentonite raw ore, consolidated in the natural ground, will have similar properties of consolidated buffer material. Three sodium type bentonite ore were choosen whose mined places and age were different. For experimental evaluation of influence of cementation on swelling properties, the authors made undisturbed and reconstituted specimens, and conducted swelling pressure and one-dimen-sional swelling deformation tests. As a result, for the undisturbed specimens, it was tended to have lower swelling properties than the reconstituted specimens by the effect of cementation. Also, the swelling properties tended to decline as the geological age of the ores was older.
{"title":"EVALUATING INFLUENCE OF CEMENTATION ON SWELLING PROPERTIES OF BENTONITE BUFFER MATERIAL BASED ON THE RESULTS OF BENTONITE ORES","authors":"D. Ito, H. Komine","doi":"10.2208/jscejge.76.3_295","DOIUrl":"https://doi.org/10.2208/jscejge.76.3_295","url":null,"abstract":"In the high-level radioactive waste geological disposal, bentonite buffer material will be keeping exposed to complex environmental of high pressure and high temperature. Therefore, bentonite buffer material will be consolidated and its physical properties such as swelling and permeability will be changed. In this study, the authors thought that bentonite raw ore, consolidated in the natural ground, will have similar properties of consolidated buffer material. Three sodium type bentonite ore were choosen whose mined places and age were different. For experimental evaluation of influence of cementation on swelling properties, the authors made undisturbed and reconstituted specimens, and conducted swelling pressure and one-dimen-sional swelling deformation tests. As a result, for the undisturbed specimens, it was tended to have lower swelling properties than the reconstituted specimens by the effect of cementation. Also, the swelling properties tended to decline as the geological age of the ores was older.","PeriodicalId":326143,"journal":{"name":"Journal of Japan Society of Civil Engineers, Ser. C (Geosphere Engineering)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128818754","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 1900-01-01DOI: 10.2208/jscejge.78.3_165
T. Danjo, K. Sako, T. Ishizawa, M. Fujimoto, S. Ito, R. Fukagawa
{"title":"PROPOSAL FOR ESTIMATION METHOD OF A SATURATED ZONE FORMATION TIME IN SLOPE FAILURE HAZARD PREDICTION BY MODIFIED I-D METHOD","authors":"T. Danjo, K. Sako, T. Ishizawa, M. Fujimoto, S. Ito, R. Fukagawa","doi":"10.2208/jscejge.78.3_165","DOIUrl":"https://doi.org/10.2208/jscejge.78.3_165","url":null,"abstract":"","PeriodicalId":326143,"journal":{"name":"Journal of Japan Society of Civil Engineers, Ser. C (Geosphere Engineering)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121370753","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"EVALUATION OF FLUCTUATIONS IN GROUND ANCHOR TENSILE FORCE CONSIDERING INFLUENCE OF TEMPERATURE","authors":"Yu Fujiwara, T. Sakai","doi":"10.2208/jscejge.75.369","DOIUrl":"https://doi.org/10.2208/jscejge.75.369","url":null,"abstract":"","PeriodicalId":326143,"journal":{"name":"Journal of Japan Society of Civil Engineers, Ser. C (Geosphere Engineering)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122680573","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Ryotaro Tomooka, K. Itoh, Tsuyoshi Tanaka, N. Suemasa, Takahiro Nonaka, Takuya Tanaka, K. Sasahara
{"title":"RESEARCH ON PREDICTION OF SLOPE FAILURE DUE TO RAINFALL AND COUNTERMEASURES","authors":"Ryotaro Tomooka, K. Itoh, Tsuyoshi Tanaka, N. Suemasa, Takahiro Nonaka, Takuya Tanaka, K. Sasahara","doi":"10.2208/jscejge.78.1_14","DOIUrl":"https://doi.org/10.2208/jscejge.78.1_14","url":null,"abstract":"","PeriodicalId":326143,"journal":{"name":"Journal of Japan Society of Civil Engineers, Ser. C (Geosphere Engineering)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126471865","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
H. Sano, M. Yamada, S. Inazumi, Shinjiro Yoshimi, Atushi Yoshitake, Youzou Watanabe
In order to utilize reclaimed gypsums derived from waste plasterboards as ground improvement materials, thermal behaviors of reclaimed gypsums and reagent gypsums are investigated in this paper. Furthermore, simple heating method of judging quality of reclaimed gypsums was examined to determine gypsum hemihydrate content. As the results, it was found that gypsum dihydrate is changed into gypsum hemihydrate under thermal condition of 90°C and gypsum hemihydrate is changed into anhydrite under that of 120°C with heating of 24 hours. And determining by calculating gypsum hemihydrate content and gypsum dihydrate content with the decrease in mass under the thermal condition of 90°C from 70°C, effectiveness of the estimation of gypsum hemihydrate content by using heating method was shown. Therefore comparing gypsum hemihydrate content determined by both methods of the heating method and the density measuring method, both results were in substantial agreement.
{"title":"ESTIMATION OF GYPSUM HEMIHYDRATE CONTENT ON RECLAIMED GYPSUMS DERIVED FROM WASTE PLASTERBOARDS BY HEATING METHODS","authors":"H. Sano, M. Yamada, S. Inazumi, Shinjiro Yoshimi, Atushi Yoshitake, Youzou Watanabe","doi":"10.2208/JSCEJGE.75.430","DOIUrl":"https://doi.org/10.2208/JSCEJGE.75.430","url":null,"abstract":"In order to utilize reclaimed gypsums derived from waste plasterboards as ground improvement materials, thermal behaviors of reclaimed gypsums and reagent gypsums are investigated in this paper. Furthermore, simple heating method of judging quality of reclaimed gypsums was examined to determine gypsum hemihydrate content. As the results, it was found that gypsum dihydrate is changed into gypsum hemihydrate under thermal condition of 90°C and gypsum hemihydrate is changed into anhydrite under that of 120°C with heating of 24 hours. And determining by calculating gypsum hemihydrate content and gypsum dihydrate content with the decrease in mass under the thermal condition of 90°C from 70°C, effectiveness of the estimation of gypsum hemihydrate content by using heating method was shown. Therefore comparing gypsum hemihydrate content determined by both methods of the heating method and the density measuring method, both results were in substantial agreement.","PeriodicalId":326143,"journal":{"name":"Journal of Japan Society of Civil Engineers, Ser. C (Geosphere Engineering)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132072584","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 1900-01-01DOI: 10.2208/jscejge.77.2_185
Yoshihiko Hibi
{"title":"ESTIMATION OF SATURATION EQUATIONS FOR FLOW OF FLUID IN A POROUS MEDIUM","authors":"Yoshihiko Hibi","doi":"10.2208/jscejge.77.2_185","DOIUrl":"https://doi.org/10.2208/jscejge.77.2_185","url":null,"abstract":"","PeriodicalId":326143,"journal":{"name":"Journal of Japan Society of Civil Engineers, Ser. C (Geosphere Engineering)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114804159","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 1900-01-01DOI: 10.2208/jscejge.77.4_348
S. Kawamura, Kei Shimamoto, T. Kawagoe
{"title":"FORCED DETERIORATION EXPERIMENTS AND DETERIORATION RATE OF KIMACHI SANDSTONE","authors":"S. Kawamura, Kei Shimamoto, T. Kawagoe","doi":"10.2208/jscejge.77.4_348","DOIUrl":"https://doi.org/10.2208/jscejge.77.4_348","url":null,"abstract":"","PeriodicalId":326143,"journal":{"name":"Journal of Japan Society of Civil Engineers, Ser. C (Geosphere Engineering)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114814686","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 1900-01-01DOI: 10.2208/jscejge.78.2_128
Satoru Harasaki, H. Komine, S. Goto, Hailong Wang, D. Ito, Shinsuke Ujiie, Seiichi Narushima
{"title":"EXPERIMENTAL STUDY ON DESIGNING TREATMENT SYSTEM FOR USED SUPER HEAVY BENTONITE SLURRY BY CENTRIFUGATION","authors":"Satoru Harasaki, H. Komine, S. Goto, Hailong Wang, D. Ito, Shinsuke Ujiie, Seiichi Narushima","doi":"10.2208/jscejge.78.2_128","DOIUrl":"https://doi.org/10.2208/jscejge.78.2_128","url":null,"abstract":"","PeriodicalId":326143,"journal":{"name":"Journal of Japan Society of Civil Engineers, Ser. C (Geosphere Engineering)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121264250","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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