Effect of Mineral Additives on the Durability of Self-Compacted Lightweight Concrete Made with LECA | ||
| Egyptian Journal of Chemistry | ||
| Volume 68, Issue 13, December 2025, Pages 491-508 PDF (908.1 K) | ||
| Document Type: Original Article | ||
| DOI: 10.21608/ejchem.2025.369125.11483 | ||
| Authors | ||
| Mohamed Abouelhassan1; Kamha M. G.2; mohamed Ashraf* 3; Bashandy A. A.4 | ||
| 1Geology Department, Faculty of Science, Menoufia University, Menofia Governorate, Egypt. | ||
| 2Head of Geology Department, Faculty of Science, Menoufia University, Egypt | ||
| 3Geology Department, Faculty of Science, Menoufia University, Egypt | ||
| 4Head of Civil Engineering Department, Faculty of Engineering, Menoufia University, Egypt | ||
| Abstract | ||
| This study investigates the effects of incorporating various mineral additives on the durability characteristics of self-compacted lightweight concrete manufactured with Light Expanded Clay Aggregate (LECA). The research evaluates the performance of different mineral additives including lime powder (LP), marble dust (MD), fly ash (FA), and granulated quartz (GQ) at varying proportions (10%, 20%, and 30% of cementitious materials). Comprehensive durability assessments were conducted through multiple testing regimes including resistance to sulfate attack, chloride attack, freeze-thaw cycles, water permeability, and water absorption. The results demonstrate that the incorporation of mineral additives significantly enhances the durability properties of LECA concrete. Marble dust at 20% shows superior performance against sulfate attack with only 12.21% reduction in flexural strength compared to 17.62% for the control mix. Granulated quartz at 10% exhibits excellent resistance to chloride attack, while fly ash demonstrates progressively improved resistance to both sulfate and chloride attacks with increasing percentages up to 30%. The incorporation of 20% marble dust results in a 60% reduction in water permeability, while 30% fly ash concrete shows a remarkable 40.18% decrease in water absorption compared to the control mix. All LECA concrete samples maintain chloride and sulfate content within acceptable limits according to industry standards. The findings establish that the strategic incorporation of mineral additives, particularly marble dust and fly ash, substantially enhances the durability characteristics of self-compacted lightweight concrete, making it suitable for applications in aggressive environmental conditions. | ||
| Keywords | ||
| Self-compacted lightweight concrete; Light Expanded Clay Aggregate (LECA); mineral additives; marble dust; fly ash; lime powder; granulated quartz | ||
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