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Engineering properties of reinforced geopolymer concrete beam produced from recycled aggregate | ||
| تحقیقات بتن | ||
| Article 4, Volume 16, Issue 3 - Serial Number 43, October 2023, Pages 45-54 PDF (1000.85 K) | ||
| Document Type: Research Paper | ||
| DOI: 10.22124/jcr.2023.22433.1586 | ||
| Authors | ||
| mohammadreza hajati modaraei* 1; javad razzaghi langroudi2; malekmohammad Ranjbar taklimi2 | ||
| 1Department of civil engineering, International campus, University of Guilan, Rasht, Iran | ||
| 2department of civil engineering, faculty of engineering, guilan university | ||
| Abstract | ||
| The utilization of recycled materials in the concrete industry has become one of the most essential environmental needs today, and more technical and economic studies are being performed every day in this subject. The effect of recycled materials on the shear behavior of geopolymer concretes was investigated in this work, along with a comparison to conventional recycled concretes and the effect of recycled aggregates on both concrete groups. For this purpose, ten mixing designs with recycled aggregate replacement percentages of 0, 25, 50, 75, and 100 were made in two groups of ordinary concrete and geopolymer concrete, as well as mechanical tests such as compressive strength, modulus of elasticity, and pull-off test. A reinforced beam without a shear element was also created for each mixing design to study the effect of this type of aggregate on the shear behavior of the beam. The findings revealed that increasing the percentage of recycled aggregates causes a loss in mechanical characteristics in the designs and a reduction in beam bearing capacity, indicating that geopolymer concrete has a higher replacement capacity than regular concrete. | ||
| Keywords | ||
| geopolymer concrete"; recycled aggregate"; concrete beam"; shear capacity"; pull-off test"; "; fracture energy" | ||
| References | ||
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