Estimation of water content of compacted Kunigel-V1 bentonite using near-infrared spectra
Bentonite has been selected as a candidate buffer material for the deep geological disposal of high-level radioactive waste (HLW). To more effectively control the compaction quality of bentonite blocks, an efficient and accurate method for estimating the water content of compacted bentonite should b...
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| Format: | Article |
| Language: | English |
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Elsevier
2025-02-01
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| Series: | Soils and Foundations |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S0038080624001239 |
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| author | Sota Murase Te Ma Kunlin Ruan Daichi Ito Hailong Wang Hideo Komine |
| author_facet | Sota Murase Te Ma Kunlin Ruan Daichi Ito Hailong Wang Hideo Komine |
| author_sort | Sota Murase |
| collection | DOAJ |
| description | Bentonite has been selected as a candidate buffer material for the deep geological disposal of high-level radioactive waste (HLW). To more effectively control the compaction quality of bentonite blocks, an efficient and accurate method for estimating the water content of compacted bentonite should be developed. A method for estimating the water content of compacted bentonite using near-infrared spectroscopy is proposed in this study. The near-infrared spectra of 60 compacted Kunigel-V1 (KV1) bentonite specimens, with varying water contents and compaction loads, were measured using a near-infrared spectral sensor. Based on the obtained experimental data, a calibration model was constructed through partial least squares (PLS) regression, and its accuracy was evaluated by means of several indicators. The results demonstrated that the calibration model could achieve an estimation accuracy of approximately ± 1.0 %, regardless of the compaction load. These findings confirm the applicability of using near-infrared spectroscopy for estimating the water content of compacted Kunigel-V1 bentonite. |
| format | Article |
| id | doaj-art-418d0d2a5f884a15a6fda82a7b5df5d4 |
| institution | DOAJ |
| issn | 2524-1788 |
| language | English |
| publishDate | 2025-02-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Soils and Foundations |
| spelling | doaj-art-418d0d2a5f884a15a6fda82a7b5df5d42025-08-20T02:39:38ZengElsevierSoils and Foundations2524-17882025-02-0165110154510.1016/j.sandf.2024.101545Estimation of water content of compacted Kunigel-V1 bentonite using near-infrared spectraSota Murase0Te Ma1Kunlin Ruan2Daichi Ito3Hailong Wang4Hideo Komine5Department of Civil and Environmental Engineering, Waseda University, Tokyo, Japan; Corresponding author.Graduate School of Bioagricultural Sciences, Nagoya University, Aichi, JapanFaculty of Science and Engineering, Waseda University, Tokyo, JapanFaculty of Science and Engineering, Waseda University, Tokyo, JapanDepartment of Civil Engineering, Graduate School of Engineering, The University of Tokyo, Tokyo, JapanFaculty of Science and Engineering, Waseda University, Tokyo, JapanBentonite has been selected as a candidate buffer material for the deep geological disposal of high-level radioactive waste (HLW). To more effectively control the compaction quality of bentonite blocks, an efficient and accurate method for estimating the water content of compacted bentonite should be developed. A method for estimating the water content of compacted bentonite using near-infrared spectroscopy is proposed in this study. The near-infrared spectra of 60 compacted Kunigel-V1 (KV1) bentonite specimens, with varying water contents and compaction loads, were measured using a near-infrared spectral sensor. Based on the obtained experimental data, a calibration model was constructed through partial least squares (PLS) regression, and its accuracy was evaluated by means of several indicators. The results demonstrated that the calibration model could achieve an estimation accuracy of approximately ± 1.0 %, regardless of the compaction load. These findings confirm the applicability of using near-infrared spectroscopy for estimating the water content of compacted Kunigel-V1 bentonite.http://www.sciencedirect.com/science/article/pii/S0038080624001239BentoniteNear-infrared spectroscopyPLS regressionWater content |
| spellingShingle | Sota Murase Te Ma Kunlin Ruan Daichi Ito Hailong Wang Hideo Komine Estimation of water content of compacted Kunigel-V1 bentonite using near-infrared spectra Soils and Foundations Bentonite Near-infrared spectroscopy PLS regression Water content |
| title | Estimation of water content of compacted Kunigel-V1 bentonite using near-infrared spectra |
| title_full | Estimation of water content of compacted Kunigel-V1 bentonite using near-infrared spectra |
| title_fullStr | Estimation of water content of compacted Kunigel-V1 bentonite using near-infrared spectra |
| title_full_unstemmed | Estimation of water content of compacted Kunigel-V1 bentonite using near-infrared spectra |
| title_short | Estimation of water content of compacted Kunigel-V1 bentonite using near-infrared spectra |
| title_sort | estimation of water content of compacted kunigel v1 bentonite using near infrared spectra |
| topic | Bentonite Near-infrared spectroscopy PLS regression Water content |
| url | http://www.sciencedirect.com/science/article/pii/S0038080624001239 |
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