Mechanical Properties of Concrete and Bond Strength of Concrete-Rock Interface under High Geothermal Conditions.
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| Title: | Mechanical Properties of Concrete and Bond Strength of Concrete-Rock Interface under High Geothermal Conditions. |
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| Authors: | Fan, Lidan1,2, Chen, Jie1, Li, Peitao1,2 tm_lpt@163.com, Yu, Yongqiang1,2, Zhang, Jiyun1,2, Chen, Xiaoxi3 |
| Source: | Journal of Engineering Science & Technology Review. 2026, Vol. 19 Issue 1, p212-225. 14p. |
| Subjects: | Concrete construction, Interfaces (Physical sciences), Geothermal engineering, Shear strength, Geothermal resources, Compressive strength |
| Abstract: | To overcome the insufficient research on the mechanical properties of concrete and the interfacial bonding characteristics between concrete and rock under elevated curing temperatures, a novel testing device for measuring the bond strength of concrete-rock interface was proposed to improve the accuracy and reliability of bonding tests. Subsequently, a hightemperature curing chamber was used to simulate geothermal environments with curing temperatures of 20 °C, 30 °C, 40 °C, and 50 °C. The basic physical properties, strength characteristics, and interfacial bond strength of concrete were experimentally investigated, and the strength development of concrete was analyzed using several predictive models. Results show that the early compressive strength of concrete increases with increasing curing temperature, whereas the 28-d compressive strength, splitting tensile strength, flexural strength, and elastic modulus decrease. Among the four strength prediction models considered in this study, the equivalent age model, which simultaneously accounts for curing temperature and curing age, achieves the highest fitting accuracy. In contrast with the strength variation of concrete, bond strength at the concrete-rock interface initially increases and then decreases with increasing curing temperature, reaching its maximum value at 40 °C. The findings of this study provide a useful reference for the design and performance evaluation of concrete support structures in high geothermal tunnel engineering. [ABSTRACT FROM AUTHOR] |
| Copyright of Journal of Engineering Science & Technology Review is the property of Technological Education Institute of Kavala and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) | |
| Database: | Engineering Source |
| FullText | Links: – Type: pdflink Text: Availability: 0 |
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| Header | DbId: egs DbLabel: Engineering Source An: 192680619 AccessLevel: 6 PubType: Academic Journal PubTypeId: academicJournal PreciseRelevancyScore: 0 |
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| Items | – Name: Title Label: Title Group: Ti Data: Mechanical Properties of Concrete and Bond Strength of Concrete-Rock Interface under High Geothermal Conditions. – Name: Author Label: Authors Group: Au Data: <searchLink fieldCode="AR" term="%22Fan%2C+Lidan%22">Fan, Lidan</searchLink><relatesTo>1,2</relatesTo><br /><searchLink fieldCode="AR" term="%22Chen%2C+Jie%22">Chen, Jie</searchLink><relatesTo>1</relatesTo><br /><searchLink fieldCode="AR" term="%22Li%2C+Peitao%22">Li, Peitao</searchLink><relatesTo>1,2</relatesTo><i> tm_lpt@163.com</i><br /><searchLink fieldCode="AR" term="%22Yu%2C+Yongqiang%22">Yu, Yongqiang</searchLink><relatesTo>1,2</relatesTo><br /><searchLink fieldCode="AR" term="%22Zhang%2C+Jiyun%22">Zhang, Jiyun</searchLink><relatesTo>1,2</relatesTo><br /><searchLink fieldCode="AR" term="%22Chen%2C+Xiaoxi%22">Chen, Xiaoxi</searchLink><relatesTo>3</relatesTo> – Name: TitleSource Label: Source Group: Src Data: <searchLink fieldCode="JN" term="%22Journal+of+Engineering+Science+%26+Technology+Review%22">Journal of Engineering Science & Technology Review</searchLink>. 2026, Vol. 19 Issue 1, p212-225. 14p. – Name: Subject Label: Subjects Group: Su Data: <searchLink fieldCode="DE" term="%22Concrete+construction%22">Concrete construction</searchLink><br /><searchLink fieldCode="DE" term="%22Interfaces+%28Physical+sciences%29%22">Interfaces (Physical sciences)</searchLink><br /><searchLink fieldCode="DE" term="%22Geothermal+engineering%22">Geothermal engineering</searchLink><br /><searchLink fieldCode="DE" term="%22Shear+strength%22">Shear strength</searchLink><br /><searchLink fieldCode="DE" term="%22Geothermal+resources%22">Geothermal resources</searchLink><br /><searchLink fieldCode="DE" term="%22Compressive+strength%22">Compressive strength</searchLink> – Name: Abstract Label: Abstract Group: Ab Data: To overcome the insufficient research on the mechanical properties of concrete and the interfacial bonding characteristics between concrete and rock under elevated curing temperatures, a novel testing device for measuring the bond strength of concrete-rock interface was proposed to improve the accuracy and reliability of bonding tests. Subsequently, a hightemperature curing chamber was used to simulate geothermal environments with curing temperatures of 20 °C, 30 °C, 40 °C, and 50 °C. The basic physical properties, strength characteristics, and interfacial bond strength of concrete were experimentally investigated, and the strength development of concrete was analyzed using several predictive models. Results show that the early compressive strength of concrete increases with increasing curing temperature, whereas the 28-d compressive strength, splitting tensile strength, flexural strength, and elastic modulus decrease. Among the four strength prediction models considered in this study, the equivalent age model, which simultaneously accounts for curing temperature and curing age, achieves the highest fitting accuracy. In contrast with the strength variation of concrete, bond strength at the concrete-rock interface initially increases and then decreases with increasing curing temperature, reaching its maximum value at 40 °C. The findings of this study provide a useful reference for the design and performance evaluation of concrete support structures in high geothermal tunnel engineering. [ABSTRACT FROM AUTHOR] – Name: AbstractSuppliedCopyright Label: Group: Ab Data: <i>Copyright of Journal of Engineering Science & Technology Review is the property of Technological Education Institute of Kavala and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.) |
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| RecordInfo | BibRecord: BibEntity: Identifiers: – Type: doi Value: 10.25103/jestr.191.21 Languages: – Code: eng Text: English PhysicalDescription: Pagination: PageCount: 14 StartPage: 212 Subjects: – SubjectFull: Concrete construction Type: general – SubjectFull: Interfaces (Physical sciences) Type: general – SubjectFull: Geothermal engineering Type: general – SubjectFull: Shear strength Type: general – SubjectFull: Geothermal resources Type: general – SubjectFull: Compressive strength Type: general Titles: – TitleFull: Mechanical Properties of Concrete and Bond Strength of Concrete-Rock Interface under High Geothermal Conditions. Type: main BibRelationships: HasContributorRelationships: – PersonEntity: Name: NameFull: Fan, Lidan – PersonEntity: Name: NameFull: Chen, Jie – PersonEntity: Name: NameFull: Li, Peitao – PersonEntity: Name: NameFull: Yu, Yongqiang – PersonEntity: Name: NameFull: Zhang, Jiyun – PersonEntity: Name: NameFull: Chen, Xiaoxi IsPartOfRelationships: – BibEntity: Dates: – D: 01 M: 01 Text: 2026 Type: published Y: 2026 Identifiers: – Type: issn-print Value: 17912377 Numbering: – Type: volume Value: 19 – Type: issue Value: 1 Titles: – TitleFull: Journal of Engineering Science & Technology Review Type: main |
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