Journal of the Clay Science Society of Japan最新文献

{"title":"Characteristics and Application of Bentonite","authors":"Masanobu Onikata","doi":"10.11362/JCSSJNENDOKAGAKU1961.46.131","DOIUrl":"https://doi.org/10.11362/JCSSJNENDOKAGAKU1961.46.131","url":null,"abstract":"","PeriodicalId":164792,"journal":{"name":"Journal of the Clay Science Society of Japan","volume":"234 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-06-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125542971","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":"Effect of Dialysis and Mode of Heating on the Formation of Imogolite from Moderately Concentrated Hydroxyaluminum Silicate Solutions","authors":"Ryosuke Nakanishi, S. Wada, Masaya Suzuki, K. Inukai","doi":"10.11362/JCSSJNENDOKAGAKU1961.46.112","DOIUrl":"https://doi.org/10.11362/JCSSJNENDOKAGAKU1961.46.112","url":null,"abstract":"","PeriodicalId":164792,"journal":{"name":"Journal of the Clay Science Society of Japan","volume":"24 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-06-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134315992","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":"Factors affecting to the viscosity of montmorillonite/water suspension: 2. Relationship between aspect ratio of montmorillonite particles and viscosity of aqueous suspensions.","authors":"K. Suzuki, T. Sato, T. Yoneda","doi":"10.11362/JCSSJNENDOKAGAKU1961.46.120","DOIUrl":"https://doi.org/10.11362/JCSSJNENDOKAGAKU1961.46.120","url":null,"abstract":"The viscosity of aqueeus montmorillonite suspcnsions is affected by many factors, most notable amollg them inc]ude the soluble salt content and composition of exchangeable cations. However, difference in the viscosity ef these suspensions remained even at almest identical soluble salt and exchangeable cation compositions. Because of these, the authors made this researeh based on the following hypothesis: the determining factor for the viscosity of aqueous montmorillonite suspensions is the aspect ratios of montmorillonite particles. Eight montmorillonite samples from Yamagata-Japan, Wyoming-USA and Gujart-India, having wide range of viscosity and aspect ratio, were used, In the experiments, the de-carbonated and Na-exchanged samples in addition to the untreated samples, both purified from bentonite suspension, wcre utilized. Surface area of basal planes and heights of 10e montmorillonite particles randomly-selected from the ulltreated samples were measured using AFM. The surface area of the basal planes was converted te the diameter of an equivalent circle. The aspect ratio was then calculated by dividing the diameter of the obtained equivalent circle with the height ef the particle. The calculated values of the aspect ratio were at 260-380, 190-210 and 129 for the montmorillonites sampled from Yamagata, Wyoming and Gujarat, respectively. The aspect ratios of some Na-exchanged montmorillonite samples were also determinecl from the viscesity of diluted suspensions, The values of the aspect ratio obtained using this different method showed good agreement with the results by AFM measurement. This means that montmoril]onite particles are suspended in water without folding or bending. For Na-exchanged samples, aspect ratio of montmorlllonite particles and viscosity of aqueous suspensions showed good correlation {RZ=O,96). Using Simha's3} and Einstein's2g) equations, the reason why the aspect ratio is the determining factor for the viscosity of aqueous montmorillonite suspensions could be explained as follo\",s: in the aqueous suspensiens, montmorillonie particles are rotating with Brownian movement of water molecules and occupying an apparent volume of sphere having diameter equivalent to the aspect ratio (nm}. Apparent votume fraction f montmorillonite, which is ealculated by multiplying the apparent volume of the montmorillonite particle and the number ef particles in a lml suspension, is controlled by the aspect ratio. Because the aspect ratio affects numerically en the order of cube power to the apparent volume fraction of montmorillonite, while the number of particles in suspension affects only on the order oi single power, in consideration o[ Einstein's equation, ]vlontmorillonite that have large aspect ratios even with less number of particles will occupy a large apparent volume fraction i suspensien and will have high viscosity. In contrast, montmorillonite with a sma[ler aspeet ratio and large number of particles will occupy a smaller apparent","PeriodicalId":164792,"journal":{"name":"Journal of the Clay Science Society of Japan","volume":"63 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-06-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127715740","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":"A Mineralogical Consideration on Unusual Cracking of Concrete Structures containing Calcareous Aggregate","authors":"A. Maru","doi":"10.11362/JCSSJNENDOKAGAKU1961.46.105","DOIUrl":"https://doi.org/10.11362/JCSSJNENDOKAGAKU1961.46.105","url":null,"abstract":"Many types of unusual cracking occurs in concrete structures containing calcareous aggregates such as limestone or coral reef, but few studies have been conducted on these phenomena. It has previously been reported that this unusual occurence of cracking in concrete is due to an alkali-carbonate or an alkali-silica reaction which is derived from limestone containing fine clay or silica. However, the calcareous aggregates are produced in Japan contain a small amounts of silica and there are few dolomitic limestone deposits in Japan. A mineralogical study was therefore conducted on cracked concrete structure contained calcareous aggregates. The results indicated following common characteristics: (1) A large quantity portlandite cement mineral was formed. (2) Cement minerals such as 3CaO•EAl2O3. 8-12H20 or 4CaO•EAl2O3. 3H2O were formed. (3) In cases where of 4CaO•EAl2O3.13H2O appeared, gel filled cracks or air babbles were observed. (4) The components of gel, filled cracks and air babbles in concrete originated from within the cement. The gel was a biproduct of a reaction with in cement, and was not responsible for the cracking of concrete by swelling. It is thought that cracking in concrete contaning calcareous aggregates is caused by swelling, which is due to the formation of large amounts of portlandite and calcium alminate hydrate. It is also thought that this unusual reaction is related to the powder grade of the cement, the water: cement ratio in the concrete or inadequate curing during concrete placement. This study is on going and the results of which will be reported in the near future.","PeriodicalId":164792,"journal":{"name":"Journal of the Clay Science Society of Japan","volume":"128 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-06-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121138879","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":"Geotechnical Perspectives of Landslide Mechanism in Serpentine Zone","authors":"R. Yatabe, N. Bhandary, M. Okamura","doi":"10.11362/JCSSJNENDOKAGAKU1961.46.16","DOIUrl":"https://doi.org/10.11362/JCSSJNENDOKAGAKU1961.46.16","url":null,"abstract":"This paper discusses landslide mechanism in serpentine dominated areas from geotechnical and mineralogical points of view. It first introduces typical features of landslide distribution in the serpentine zone, which is then supported by the discussion encompassing shear strength and mineralogical properties of the clay material involved in inducing serpentine zone landslides. The angles of shear resistance for the weathered serpentine clay samples were found to be comparatively high, which often does not lead to land sliding in gentle slopes, so the chances of smectite or expansive chlorite originated from other rock types being the cause of land sliding were found to be higher. For this reason, comparatively gentle serpentine slopes usually slide through the planes of boundary with other rock types. The dissolution tests on fine powder samples of serpentine revealed the influence of brucite, and the angles of shear resistance decrease notably with the release of ions. Finally, the shear strength and elemental analysis tests on the collected landslide clay samples revealed the influence of chemical weathering on decreased shear strength of clays.","PeriodicalId":164792,"journal":{"name":"Journal of the Clay Science Society of Japan","volume":"99 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-02-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122107035","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":"CO2 Fixation in the Serpentinite-Groundwater System","authors":"Atusi Ninomiya, Y. Mizuochi, T. Kato, I. Okamoto, T. Yajima","doi":"10.11362/JCSSJNENDOKAGAKU1961.46.28","DOIUrl":"https://doi.org/10.11362/JCSSJNENDOKAGAKU1961.46.28","url":null,"abstract":"","PeriodicalId":164792,"journal":{"name":"Journal of the Clay Science Society of Japan","volume":"62 41","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-02-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114087964","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":"Recent Progress in Serpentine Mineralogy","authors":"S. Uehara","doi":"10.11362/JCSSJNENDOKAGAKU1961.46.6","DOIUrl":"https://doi.org/10.11362/JCSSJNENDOKAGAKU1961.46.6","url":null,"abstract":"","PeriodicalId":164792,"journal":{"name":"Journal of the Clay Science Society of Japan","volume":"47 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-02-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131395821","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":"Clay Minerals in the Gill of a Sweet Fish (Plecoglossus Altivelis Altivelis) Derived from the Flushing Dam Sediments","authors":"K. Tazaki, K. Shiraki, T. Matsushima, Hiroki Imanishi, M. Nomura, Issei Morii, Rie Wakimoto","doi":"10.11362/JCSSJNENDOKAGAKU1961.46.40","DOIUrl":"https://doi.org/10.11362/JCSSJNENDOKAGAKU1961.46.40","url":null,"abstract":"Both Dashidaira and Unazuki Dams on the Kurobe River in Toyama, Japan, equipped with a flushing gate, were flushed out in July 1st, 2006. Experimental 100 sweet fishes (Plecoglossus altivelis altivelis) were extinct during one hour of flushing dam sediments. To establish the cause of the death of the sweet fishes, the samples were collected from Kurobe River in order to examine their gills and stomach, which showed tissue damage and choke-up with clay particles, derived from the fl ushed dam sediments. For comparison between dam sediments and choke-up with clay particles, were analyzed using X-ray powder diffraction and scanning electron microscopy equipped with energy dispersive analyzer. Abundant smectite, chlorite, mica clay minerals and kaolin minerals were found in the gill and stomach of the death body of sweet fishes, suggesting effects of the sediments on downstream ecosystems.","PeriodicalId":164792,"journal":{"name":"Journal of the Clay Science Society of Japan","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-02-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121759997","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":"A Present From the Nature","authors":"Takashi Watanabe","doi":"10.11362/JCSSJNENDOKAGAKU1961.46.3","DOIUrl":"https://doi.org/10.11362/JCSSJNENDOKAGAKU1961.46.3","url":null,"abstract":"","PeriodicalId":164792,"journal":{"name":"Journal of the Clay Science Society of Japan","volume":"86 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-02-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134057144","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":"Specific Adsorption of Transition Element Ions in Magadiite and Their Characteristics","authors":"H. Muraishi, Atsushi Matsuo","doi":"10.11362/JCSSJNENDOKAGAKU1961.46.61","DOIUrl":"https://doi.org/10.11362/JCSSJNENDOKAGAKU1961.46.61","url":null,"abstract":"Na+ ion in magadiite was exchanged by typical element ions (Mg2+, Ca2+, Al3+) and transition element ions (Co2+, Cu2+, Zn2+, Fe3+). The transition element ion tended to superfluously make ion exchange . When the ion exchanged magadiites were further treated with dil. HC1 solution, transition element ion made ion exchange only 50-80% by H+ ion, while typical element ion quantitatively exchanged. When the ion exchanged magadiites was treated with ethylene glycol, the transition element ion exchanged samples did not swell almost, while typical element ion exchanged samples swelled at d(001)=1.7nm. From these results, it was considered that transition element ion has done the peculiar adsorption on the basis of strong interaction. The results of (1) IR absorption spectra, (2) the change of d(001) value before and after the treatment in a dil. HC1 solution, and (3) the change in color tone of ion exchanged magadiite with treatments suggested that transition element ion had formed the complex which made surface functional group (= Si0-, = SiOH) and H2O to be ligands in the interlayer of magadiite.","PeriodicalId":164792,"journal":{"name":"Journal of the Clay Science Society of Japan","volume":"33 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-02-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128544302","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}