Sustainable Concrete Production Using Granodiorite, Alkali Feldspar Granite, and Mafic Metavolcanic Rock Powders as Supplementary Cementitious Materials.
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| Title: | Sustainable Concrete Production Using Granodiorite, Alkali Feldspar Granite, and Mafic Metavolcanic Rock Powders as Supplementary Cementitious Materials. |
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| Authors: | Faried, A. Serag1 (AUTHOR) asg00@fayoum.edu.eg, Fathy, Nourhan1,2 (AUTHOR), Morsi, W. M.2,3 (AUTHOR), Dawoud, Maher3,4 (AUTHOR), Mahmoud, Abdelhalim S.1,4 (AUTHOR), Osman, Khaled M.1,2 (AUTHOR) |
| Source: | Materials (1996-1944). Jun2026, Vol. 19 Issue 11, p2193. 21p. |
| Subjects: | Granodiorite, Granite, Compressive strength, Cement admixtures, Concrete, American Society for Testing Materials, Pozzolanic reaction, Environmental sciences, Mafic rocks |
| Geographic Terms: | Eastern Desert (Egypt), Egypt |
| Abstract: | This study aims to explore the effect of using three distinct silicate- and aluminate-rich rock powders—granodiorite (GDP), alkali-feldspar granite (AFGP), and mafic metavolcanic (MMVP)—sourced from Egypt's largely unexploited Eastern Desert geological resources, as supplementary cementitious materials (SCMs) in concrete production. Rock samples were processed into ultrafine powders (1.4–1.5 μm average particle size) and utilized as partial cement replacements at 3%, 6%, 9%, and 12% by weight. These rock powders were confirmed to meet ASTM C618 requirements for natural pozzolans, qualifying them as viable SCMs. Pozzolanic activity was confirmed through Strength Activity Index (SAI) testing, with values of 79%, 82%, and 76% for GDP, AFGP, and MMVP, respectively, all exceeding the 75% minimum threshold required by ASTM C618. Fresh concrete workability decreased progressively with increasing rock powder content. Mechanical testing demonstrated optimal replacement levels of 9% for GDP and AFGP, and 6% for MMVP, achieving 28-day compressive strength improvements of 14.1%, 16.0%, and 14.9%, respectively, compared to plain Portland cement concrete without any rock powder replacement (control mix). Splitting tensile strength increased by 14.7%, 12.7%, and 16.3% at optimal dosages. Microstructural analysis via SEM revealed enhanced matrix densification and reduced porosity through physical filler effects and pozzolanic reactions. Energy-dispersive X-ray spectroscopy (EDX) confirmed reduced Ca/Si ratios, indicating enhanced calcium silicate hydrate (C-S-H) gel formation with superior binding characteristics. Results demonstrate that these previously unexploited rock powders effectively function as sustainable SCMs, reducing cement consumption by up to 12%, offering significant environmental benefits through reduced CO2 emissions and efficient utilization of natural geological resources in sustainable construction practices. [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: 194587104 AccessLevel: 6 PubType: Academic Journal PubTypeId: academicJournal PreciseRelevancyScore: 0 |
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| Items | – Name: Title Label: Title Group: Ti Data: Sustainable Concrete Production Using Granodiorite, Alkali Feldspar Granite, and Mafic Metavolcanic Rock Powders as Supplementary Cementitious Materials. – Name: Author Label: Authors Group: Au Data: <searchLink fieldCode="AR" term="%22Faried%2C+A%2E+Serag%22">Faried, A. Serag</searchLink><relatesTo>1</relatesTo> (AUTHOR)<i> asg00@fayoum.edu.eg</i><br /><searchLink fieldCode="AR" term="%22Fathy%2C+Nourhan%22">Fathy, Nourhan</searchLink><relatesTo>1,2</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Morsi%2C+W%2E+M%2E%22">Morsi, W. M.</searchLink><relatesTo>2,3</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Dawoud%2C+Maher%22">Dawoud, Maher</searchLink><relatesTo>3,4</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Mahmoud%2C+Abdelhalim+S%2E%22">Mahmoud, Abdelhalim S.</searchLink><relatesTo>1,4</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Osman%2C+Khaled+M%2E%22">Osman, Khaled M.</searchLink><relatesTo>1,2</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 11, p2193. 21p. – Name: Subject Label: Subjects Group: Su Data: <searchLink fieldCode="DE" term="%22Granodiorite%22">Granodiorite</searchLink><br /><searchLink fieldCode="DE" term="%22Granite%22">Granite</searchLink><br /><searchLink fieldCode="DE" term="%22Compressive+strength%22">Compressive strength</searchLink><br /><searchLink fieldCode="DE" term="%22Cement+admixtures%22">Cement admixtures</searchLink><br /><searchLink fieldCode="DE" term="%22Concrete%22">Concrete</searchLink><br /><searchLink fieldCode="DE" term="%22American+Society+for+Testing+Materials%22">American Society for Testing Materials</searchLink><br /><searchLink fieldCode="DE" term="%22Pozzolanic+reaction%22">Pozzolanic reaction</searchLink><br /><searchLink fieldCode="DE" term="%22Environmental+sciences%22">Environmental sciences</searchLink><br /><searchLink fieldCode="DE" term="%22Mafic+rocks%22">Mafic rocks</searchLink> – Name: SubjectGeographic Label: Geographic Terms Group: Su Data: <searchLink fieldCode="DE" term="%22Eastern+Desert+%28Egypt%29%22">Eastern Desert (Egypt)</searchLink><br /><searchLink fieldCode="DE" term="%22Egypt%22">Egypt</searchLink> – Name: Abstract Label: Abstract Group: Ab Data: This study aims to explore the effect of using three distinct silicate- and aluminate-rich rock powders—granodiorite (GDP), alkali-feldspar granite (AFGP), and mafic metavolcanic (MMVP)—sourced from Egypt's largely unexploited Eastern Desert geological resources, as supplementary cementitious materials (SCMs) in concrete production. Rock samples were processed into ultrafine powders (1.4–1.5 μm average particle size) and utilized as partial cement replacements at 3%, 6%, 9%, and 12% by weight. These rock powders were confirmed to meet ASTM C618 requirements for natural pozzolans, qualifying them as viable SCMs. Pozzolanic activity was confirmed through Strength Activity Index (SAI) testing, with values of 79%, 82%, and 76% for GDP, AFGP, and MMVP, respectively, all exceeding the 75% minimum threshold required by ASTM C618. Fresh concrete workability decreased progressively with increasing rock powder content. Mechanical testing demonstrated optimal replacement levels of 9% for GDP and AFGP, and 6% for MMVP, achieving 28-day compressive strength improvements of 14.1%, 16.0%, and 14.9%, respectively, compared to plain Portland cement concrete without any rock powder replacement (control mix). Splitting tensile strength increased by 14.7%, 12.7%, and 16.3% at optimal dosages. Microstructural analysis via SEM revealed enhanced matrix densification and reduced porosity through physical filler effects and pozzolanic reactions. Energy-dispersive X-ray spectroscopy (EDX) confirmed reduced Ca/Si ratios, indicating enhanced calcium silicate hydrate (C-S-H) gel formation with superior binding characteristics. Results demonstrate that these previously unexploited rock powders effectively function as sustainable SCMs, reducing cement consumption by up to 12%, offering significant environmental benefits through reduced CO2 emissions and efficient utilization of natural geological resources in sustainable construction practices. [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/ma19112193 Languages: – Code: eng Text: English PhysicalDescription: Pagination: PageCount: 21 StartPage: 2193 Subjects: – SubjectFull: Granodiorite Type: general – SubjectFull: Granite Type: general – SubjectFull: Compressive strength Type: general – SubjectFull: Cement admixtures Type: general – SubjectFull: Concrete Type: general – SubjectFull: American Society for Testing Materials Type: general – SubjectFull: Pozzolanic reaction Type: general – SubjectFull: Environmental sciences Type: general – SubjectFull: Mafic rocks Type: general – SubjectFull: Eastern Desert (Egypt) Type: general – SubjectFull: Egypt Type: general Titles: – TitleFull: Sustainable Concrete Production Using Granodiorite, Alkali Feldspar Granite, and Mafic Metavolcanic Rock Powders as Supplementary Cementitious Materials. Type: main BibRelationships: HasContributorRelationships: – PersonEntity: Name: NameFull: Faried, A. Serag – PersonEntity: Name: NameFull: Fathy, Nourhan – PersonEntity: Name: NameFull: Morsi, W. M. – PersonEntity: Name: NameFull: Dawoud, Maher – PersonEntity: Name: NameFull: Mahmoud, Abdelhalim S. – PersonEntity: Name: NameFull: Osman, Khaled M. IsPartOfRelationships: – BibEntity: Dates: – D: 01 M: 06 Text: Jun2026 Type: published Y: 2026 Identifiers: – Type: issn-print Value: 19961944 Numbering: – Type: volume Value: 19 – Type: issue Value: 11 Titles: – TitleFull: Materials (1996-1944) Type: main |
| ResultId | 1 |
