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Advances in Concrete Construction Volume 20, Number 3, August 2025 , pages 167-185 DOI: https://doi.org/10.12989/acc.2025.20.3.167 |
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Durability characteristics of normal-and medium-strength one-part geopolymer concrete |
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Divya Sharma and Ran Bir Singh
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| Abstract | ||
| The study is an experimental investigation on durability properties of normal- and medium-strength one-part geopolymer concrete designed for a targeted compressive strength of 30 MPa and 50 MPa, respectively. The properties were studied in terms of compressive strength, sulfate resistance, chloride resistance, bulk density, volume of permeable voids, sorptivity, water penetration depth, initial surface absorption and microstructural studies. Results showed that approximately 90% of the targeted compressive strength was achieved in initial 7 days. The strength loss in normal-and medium-strength onepart GPC was 7% and 5%, respectively, after immersion of concrete in 5% MgSO4 solution for 180 days. The measured values of permeable voids, chloride penetration depth, sorptivity, initial surface absorption, water penetration depth decreased in medium-strength one-part GPC relative to normal-strength one-part GPC. The microstructure of the concretes was studied using SEM, EDS, FITR and XRD which confirmed polymerization reaction with formation of three-dimensional aluminosilicate network of C-(N)-A-S-H gel. | ||
| Key Words | ||
| anhydrous sodium metasilicate; compressive strength; durability properties; ground granulated blast furnace slag; one-part geopolymer concrete; response surface methodology | ||
| Address | ||
| Department of Civil Engineering, Central University of Haryana, Mahendergarh,123031, India. | ||
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