Development and application of geothermally derived silica grout for carbon-neutral soil stabilization
The construction industry is a major contributor to global carbon emissions, driving the need for sustainable construction materials that can mitigate environmental impacts. This study introduces a novel carbon-neutral grout, Colloidal Silica Recovered from Geothermal Fluids (CSRGF), developed using...
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| Format: | Article |
| Language: | English |
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Elsevier
2025-07-01
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| Series: | Case Studies in Construction Materials |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S2214509525000968 |
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| _version_ | 1832590022338936832 |
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| author | Taichi Terui Toshiyuki Motohashi Shigeo Sasahara Shinya Inazumi |
| author_facet | Taichi Terui Toshiyuki Motohashi Shigeo Sasahara Shinya Inazumi |
| author_sort | Taichi Terui |
| collection | DOAJ |
| description | The construction industry is a major contributor to global carbon emissions, driving the need for sustainable construction materials that can mitigate environmental impacts. This study introduces a novel carbon-neutral grout, Colloidal Silica Recovered from Geothermal Fluids (CSRGF), developed using silica extracted from geothermal fluids, a byproduct of geothermal energy production. CSRGF grout is specifically designed to enhance soil stabilization in construction projects while minimizing its environmental footprint. The formulation incorporates colloidal silica with specialty water glass, which not only improves mechanical durability, but also significantly reduces CO2 emissions compared to traditional silica-based grouts. To evaluate the performance of the CSRGF grout, extensive testing was conducted on its key properties, including liquefaction resistance, unconfined compressive strength, water sealing capabilities and environmental safety. The results indicate that CSRGF grout exhibits a significant improvement in liquefaction resistance and compressive strength while maintaining low viscosity and controlled gelling times, which are essential for effective soil penetration and stabilization. In addition, the production process of CSRGF grout is consistent with carbon neutrality goals, contributing to a significant reduction in CO2 emissions. This innovative material not only represents an advancement in soil stabilization technology, but also aligns with the broader goal of reducing the carbon footprint of the construction industry, thereby supporting global sustainability initiatives and promoting more sustainable construction practices. |
| format | Article |
| id | doaj-art-fcb5546faa7f4384b5326be5d82ea528 |
| institution | Kabale University |
| issn | 2214-5095 |
| language | English |
| publishDate | 2025-07-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Case Studies in Construction Materials |
| spelling | doaj-art-fcb5546faa7f4384b5326be5d82ea5282025-01-24T04:45:11ZengElsevierCase Studies in Construction Materials2214-50952025-07-0122e04297Development and application of geothermally derived silica grout for carbon-neutral soil stabilizationTaichi Terui0Toshiyuki Motohashi1Shigeo Sasahara2Shinya Inazumi3Obayashi Corporation, Tokyo 108-8502, JapanOsaka Bousui Construction Co. Ltd., Osaka 543-0016, JapanFuji Chemical Co. Ltd., Osaka 534-0024, JapanShibaura Institute of Technology, College of Engineering, Tokyo 135-8548, Japan; Corresponding author.The construction industry is a major contributor to global carbon emissions, driving the need for sustainable construction materials that can mitigate environmental impacts. This study introduces a novel carbon-neutral grout, Colloidal Silica Recovered from Geothermal Fluids (CSRGF), developed using silica extracted from geothermal fluids, a byproduct of geothermal energy production. CSRGF grout is specifically designed to enhance soil stabilization in construction projects while minimizing its environmental footprint. The formulation incorporates colloidal silica with specialty water glass, which not only improves mechanical durability, but also significantly reduces CO2 emissions compared to traditional silica-based grouts. To evaluate the performance of the CSRGF grout, extensive testing was conducted on its key properties, including liquefaction resistance, unconfined compressive strength, water sealing capabilities and environmental safety. The results indicate that CSRGF grout exhibits a significant improvement in liquefaction resistance and compressive strength while maintaining low viscosity and controlled gelling times, which are essential for effective soil penetration and stabilization. In addition, the production process of CSRGF grout is consistent with carbon neutrality goals, contributing to a significant reduction in CO2 emissions. This innovative material not only represents an advancement in soil stabilization technology, but also aligns with the broader goal of reducing the carbon footprint of the construction industry, thereby supporting global sustainability initiatives and promoting more sustainable construction practices.http://www.sciencedirect.com/science/article/pii/S2214509525000968Carbon-neutral constructionChemical groutingCO2 emissions reductionLiquefaction resistanceSoil stabilizationSustainable construction materials |
| spellingShingle | Taichi Terui Toshiyuki Motohashi Shigeo Sasahara Shinya Inazumi Development and application of geothermally derived silica grout for carbon-neutral soil stabilization Case Studies in Construction Materials Carbon-neutral construction Chemical grouting CO2 emissions reduction Liquefaction resistance Soil stabilization Sustainable construction materials |
| title | Development and application of geothermally derived silica grout for carbon-neutral soil stabilization |
| title_full | Development and application of geothermally derived silica grout for carbon-neutral soil stabilization |
| title_fullStr | Development and application of geothermally derived silica grout for carbon-neutral soil stabilization |
| title_full_unstemmed | Development and application of geothermally derived silica grout for carbon-neutral soil stabilization |
| title_short | Development and application of geothermally derived silica grout for carbon-neutral soil stabilization |
| title_sort | development and application of geothermally derived silica grout for carbon neutral soil stabilization |
| topic | Carbon-neutral construction Chemical grouting CO2 emissions reduction Liquefaction resistance Soil stabilization Sustainable construction materials |
| url | http://www.sciencedirect.com/science/article/pii/S2214509525000968 |
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