Experimental Study of Properties of Green Concrete Based on Geopolymer Materials under High Temperature | ||
| Civil Engineering Infrastructures Journal | ||
| دوره 56، شماره 2، اسفند 2023، صفحه 365-379 اصل مقاله (1.07 M) | ||
| نوع مقاله: Research Papers | ||
| شناسه دیجیتال (DOI): 10.22059/ceij.2022.345402.1856 | ||
| نویسندگان | ||
| Mohammadhossein Mansourghanaei* 1؛ Morteza Biklaryan2؛ Alireza Mardookhpour3 | ||
| 1Ph.D., Department of Civil Engineering, Chalous Branch, Islamic Azad University, Chalous, Iran. | ||
| 2Assistant Professor, Department of Civil Engineering, Chalous Branch, Islamic Azad University, Chaloous, Iran. | ||
| 3Assistant Professor, Department of Civil Engineering, Lahijan Branch, Islamic Azad University, Lahijan, Iran. | ||
| چکیده | ||
| Geopolymer Concrete (GPC) are known as green and nature-friendly concretes. In the current research, GPC based on Granulated Blast Furnace Slag (GBFS) was used with 0-2% Polyolefin Fibers (POFs) and 0-8% Nano Silica (NS) to improve its structure. After curing the specimens under dry conditions at a temperature of 60 °C in an oven, then subjected to permeability test, water absorption test and Uultrasonic Pulse Velocity (UPV) test at the ages of 7, 28 and 90 days. On the other hand, NS reduced the amount of water absorption and water permeability in concrete by 24 and 44%, this is due to the property of filling the pores with NS. Moreover, by conducting the ultrasonic, X-Ray Fluorescence (XRF), X-Ray Diffraction (XRD), and Scanning Electron Microscope (SEM) tests, a microstructure investigation was carried out on the concrete samples. In addition to their overlapping with each other, the results indicate the GPC superiority over the regular concrete. Besides, it demonstrated the positive influence of NS addition on the UPV and microstructural properties concretes against the heating treatment at the age of 90 days. Heat caused a drop in the results by destroying the concrete microstructure. | ||
| کلیدواژهها | ||
| Concrete Microstructure؛ Geopolymer Concrete؛ Granulated Blast Furnace Slag؛ Nano Silica؛ Polyolefin Fibers | ||
| مراجع | ||
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آمار تعداد مشاهده مقاله: 870 تعداد دریافت فایل اصل مقاله: 1,094 |
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