Study on the Effects of Steel Slag on the Mechanical Properties and Microstructure of Cement-Stabilised Base Course Mixtures.
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| Title: | Study on the Effects of Steel Slag on the Mechanical Properties and Microstructure of Cement-Stabilised Base Course Mixtures. |
|---|---|
| Authors: | Li, Shuyang1,2 (AUTHOR), Zhang, Yangpeng1,2 (AUTHOR), Li, Jin1 (AUTHOR), Lan, Tianzhu1,2 (AUTHOR), Jiao, Xiaodong1 (AUTHOR) |
| Source: | Materials (1996-1944). Jun2026, Vol. 19 Issue 12, p2539. 15p. |
| Subjects: | Mechanical behavior of materials, Microstructure, Elastic modulus, Cement mixing, Solid waste management, Compressive strength, Highway engineering |
| Abstract: | Highlights: The effects of cement dosage and steel slag content on the mechanical properties of cement-stabilised steel slag mixtures were investigated. Strength and modulus first increase with steel slag content and peak at 60% steel slag incorporation. Higher cement content improves the mechanical properties gradually with a declining growth rate. Appropriate cement and steel slag synergistically densify the microstructure and enhance mixture performance. To address the environmental issues arising from the large-scale stockpiling of steel slag and to explore its efficient utilisation in road sub-bases, this study investigated the effects of cement dosage and steel slag content on the mechanical properties of cement-stabilised steel slag mixtures. Through unconfined compressive strength tests, compressive modulus of elasticity tests and splitting tensile strength tests, the study revealed the mechanisms by which cement dosage and steel slag content influence microstructure. The results indicate that as the cement content increases, the unconfined compressive strength, compressive modulus of elasticity and splitting tensile strength all show an upward trend, although the rate of increase gradually decreases. With increasing steel slag content, the unconfined compressive strength and splitting tensile strength first increase and then decrease slightly, whilst the compressive modulus of elasticity continues to rise. When 60% steel slag was incorporated, the 28-day unconfined compressive strength and splitting tensile strength reached their peak values, representing increases of 22.17% and 72.7% respectively compared to the control group. Further examination of the microstructure revealed that increasing the cement content and steel slag content enhances structural density and reduces surface porosity; however, excessive cement content and steel slag content have an adverse effect on mechanical properties. Consequently, the synergistic effect of an appropriate amount of steel slag and cement can significantly improve the mechanical properties and microstructure of the mixture. These findings are of great significance in promoting the green utilisation of solid waste materials, such as steel slag, in road engineering. [ABSTRACT FROM AUTHOR] |
| Copyright of Materials (1996-1944) is the property of MDPI 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.) | |
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| Header | DbId: egs DbLabel: Engineering Source An: 194907613 AccessLevel: 6 PubType: Academic Journal PubTypeId: academicJournal PreciseRelevancyScore: 0 |
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| Items | – Name: Title Label: Title Group: Ti Data: Study on the Effects of Steel Slag on the Mechanical Properties and Microstructure of Cement-Stabilised Base Course Mixtures. – Name: Author Label: Authors Group: Au Data: <searchLink fieldCode="AR" term="%22Li%2C+Shuyang%22">Li, Shuyang</searchLink><relatesTo>1,2</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Zhang%2C+Yangpeng%22">Zhang, Yangpeng</searchLink><relatesTo>1,2</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Li%2C+Jin%22">Li, Jin</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Lan%2C+Tianzhu%22">Lan, Tianzhu</searchLink><relatesTo>1,2</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Jiao%2C+Xiaodong%22">Jiao, Xiaodong</searchLink><relatesTo>1</relatesTo> (AUTHOR) – Name: TitleSource Label: Source Group: Src Data: <searchLink fieldCode="JN" term="%22Materials+%281996-1944%29%22">Materials (1996-1944)</searchLink>. Jun2026, Vol. 19 Issue 12, p2539. 15p. – Name: Subject Label: Subjects Group: Su Data: <searchLink fieldCode="DE" term="%22Mechanical+behavior+of+materials%22">Mechanical behavior of materials</searchLink><br /><searchLink fieldCode="DE" term="%22Microstructure%22">Microstructure</searchLink><br /><searchLink fieldCode="DE" term="%22Elastic+modulus%22">Elastic modulus</searchLink><br /><searchLink fieldCode="DE" term="%22Cement+mixing%22">Cement mixing</searchLink><br /><searchLink fieldCode="DE" term="%22Solid+waste+management%22">Solid waste management</searchLink><br /><searchLink fieldCode="DE" term="%22Compressive+strength%22">Compressive strength</searchLink><br /><searchLink fieldCode="DE" term="%22Highway+engineering%22">Highway engineering</searchLink> – Name: Abstract Label: Abstract Group: Ab Data: Highlights: The effects of cement dosage and steel slag content on the mechanical properties of cement-stabilised steel slag mixtures were investigated. Strength and modulus first increase with steel slag content and peak at 60% steel slag incorporation. Higher cement content improves the mechanical properties gradually with a declining growth rate. Appropriate cement and steel slag synergistically densify the microstructure and enhance mixture performance. To address the environmental issues arising from the large-scale stockpiling of steel slag and to explore its efficient utilisation in road sub-bases, this study investigated the effects of cement dosage and steel slag content on the mechanical properties of cement-stabilised steel slag mixtures. Through unconfined compressive strength tests, compressive modulus of elasticity tests and splitting tensile strength tests, the study revealed the mechanisms by which cement dosage and steel slag content influence microstructure. The results indicate that as the cement content increases, the unconfined compressive strength, compressive modulus of elasticity and splitting tensile strength all show an upward trend, although the rate of increase gradually decreases. With increasing steel slag content, the unconfined compressive strength and splitting tensile strength first increase and then decrease slightly, whilst the compressive modulus of elasticity continues to rise. When 60% steel slag was incorporated, the 28-day unconfined compressive strength and splitting tensile strength reached their peak values, representing increases of 22.17% and 72.7% respectively compared to the control group. Further examination of the microstructure revealed that increasing the cement content and steel slag content enhances structural density and reduces surface porosity; however, excessive cement content and steel slag content have an adverse effect on mechanical properties. Consequently, the synergistic effect of an appropriate amount of steel slag and cement can significantly improve the mechanical properties and microstructure of the mixture. These findings are of great significance in promoting the green utilisation of solid waste materials, such as steel slag, in road engineering. [ABSTRACT FROM AUTHOR] – Name: AbstractSuppliedCopyright Label: Group: Ab Data: <i>Copyright of Materials (1996-1944) is the property of MDPI 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: 10.3390/ma19122539 Languages: – Code: eng Text: English PhysicalDescription: Pagination: PageCount: 15 StartPage: 2539 Subjects: – SubjectFull: Mechanical behavior of materials Type: general – SubjectFull: Microstructure Type: general – SubjectFull: Elastic modulus Type: general – SubjectFull: Cement mixing Type: general – SubjectFull: Solid waste management Type: general – SubjectFull: Compressive strength Type: general – SubjectFull: Highway engineering Type: general Titles: – TitleFull: Study on the Effects of Steel Slag on the Mechanical Properties and Microstructure of Cement-Stabilised Base Course Mixtures. Type: main BibRelationships: HasContributorRelationships: – PersonEntity: Name: NameFull: Li, Shuyang – PersonEntity: Name: NameFull: Zhang, Yangpeng – PersonEntity: Name: NameFull: Li, Jin – PersonEntity: Name: NameFull: Lan, Tianzhu – PersonEntity: Name: NameFull: Jiao, Xiaodong IsPartOfRelationships: – BibEntity: Dates: – D: 15 M: 06 Text: Jun2026 Type: published Y: 2026 Identifiers: – Type: issn-print Value: 19961944 Numbering: – Type: volume Value: 19 – Type: issue Value: 12 Titles: – TitleFull: Materials (1996-1944) Type: main |
| ResultId | 1 |
