Experimental Investigation of High Strength Geopolymer Concrete under Fire Resistance | ||
| The International Conference on Civil and Architecture Engineering | ||
| Volume 16, Issue 16, May 2025, Pages 1-9 PDF (1.37 M) | ||
| Document Type: Original Article | ||
| DOI: 10.21608/iccae.2025.453801 | ||
| Authors | ||
| Mohamed Gamal* 1; Moustafa Abdelwahab2; Ahmed Hassan3; M. S. Zahran3 | ||
| 1Engineer officer at the Engineering Authority of the Armed Forces, Cairo, Egypt. | ||
| 2Professor, Department of Civil Engineering, Military Technical College, Cairo, Egypt. | ||
| 3Associate professor , Department of Civil Engineering , Military Technical College, Cairo, Egypt. | ||
| Abstract | ||
| Geopolymer concrete is an innovative material that is gaining popularity due to its superior performance and environmental sustainability. The objectives at the current work are to study the effect of slag content, the concentration of alkaline activators on the thermal resistance of geopolymer concrete (GPC). Three mixes of GPC were casted and tested. These mixes are devided into two groups, the first one consists of three mixes: each three slag contents were used 400 kg/m³, tested; for each slag content three different activators percentages were tested; 8%, 10% and 12%. The second group consists of one mix: three different metakaolin replacement ratios were investigated 10%, 15% and 20% for each replacement ratio, two alkaline activators ratios were tested: 10% and 12% while the slag content kept constant for all group mixes at 400 kg /m³. For comparison purposes, a control mix of OPC was casted and tested with cement content of 400 kg/m³. The whole mixes were exposed to six different temperature 200°C, 300°C, 400°C, 600°C and 800°C for two hours duration. Compressive strength test were carried out after the heat exposure at 28 days age. The results indicated that within the limits of slag content and activator percentages used, the fire resistance increases as the slag content and activator percentages increases. The addition of metakaolin considerable improves the fire resistance of GPC up to 15% replacement ratio. Geopolymer concrete showed superior fire resistance compared to ordinary portland cement (OPC). | ||
| Keywords | ||
| Geopolymer; Composites; Fire Resistance; Efficiency; Thermal Resistance | ||
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