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Evaluating UHP-SFRCs Performance under Flexural and Tensile Loadings and Aggressive Environment by Assessing the Applicability of Different Constituent Materials in UHPC Production | ||
| Civil Engineering Infrastructures Journal | ||
| دوره 56، شماره 2، اسفند 2023، صفحه 393-414 اصل مقاله (979.32 K) | ||
| نوع مقاله: Research Papers | ||
| شناسه دیجیتال (DOI): 10.22059/ceij.2023.347012.1861 | ||
| نویسندگان | ||
| Amin Pourjahanshahi1؛ S.H. Madani* 2؛ Amir Khaghani Boroujeni1 | ||
| 1M.Sc., Department of Civil and Surveying Engineering, Graduate University of Advanced Technology, Kerman, Iran. | ||
| 2Associate Professor, Department of Civil and Surveying Engineering, Graduate University of Advanced Technology, Kerman, Iran. | ||
| چکیده | ||
| Ultra-High Performance Concrete (UHPC), known for its superior mechanical and durability properties, is an appropriate material for different applications such as building and bridge construction. Investigating the possibility of UHPC production using available materials is an engineering challenge. This paper evaluates the applicability of some materials in making UHPC and the effectiveness of several parameters on the compressive strength of UHPCs. Then, by choosing the mixture yielding the highest compressive strength, the durability and mechanical properties of the mixture with 0-2.5% crimped steel fiber are investigated. The tests include compressive strength, flexural and tensile parameters, length change, rapid chloride ion migration, sorptivity, porosity, and sulfate resistance. The results reveal that the pozzolanic activity of silica fume and its synergetic effect with glass powder lead to the highest compressive strength. Moreover, it makes it possible to easily obtain a strength higher than 150MPa. Utilization of 2.5% crimped steel fiber in UHPC mixtures remarkably enhanced mechanical performance so that the flexural and tensile strength were increased by about 95% and 25% compared to the plain UHPC, respectively. However, the incorporation of fibers increased the UHPC permeability. | ||
| کلیدواژهها | ||
| Chloride Ion Diffusivity؛ Flexural and Tensile Performance؛ SEM Image؛ Supplementary Cementitious Materials؛ UHPC Constituents | ||
| مراجع | ||
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