پیوندهای مفید
آمار
| تعداد نشریات | 7 |
| تعداد شماره‌ها | 399 |
| تعداد مقالات | 5,389 |
| تعداد مشاهده مقاله | 5,288,208 |
| تعداد دریافت فایل اصل مقاله | 4,882,946 |
Thermal effects on the mechanical properties of marble, travertine and concrete cores under direct tensile test | ||
| AUT Journal of Civil Engineering | ||
| مقاله 2، دوره 4، شماره 2، شهریور 2020، صفحه 155-164 اصل مقاله (1.52 M) | ||
| نوع مقاله: Research Article | ||
| شناسه دیجیتال (DOI): 10.22060/ajce.2019.14907.5509 | ||
| نویسندگان | ||
| Azin Karimzad Anzabi1؛ ahmad fahimifar* 2؛ Mohammad Khalili3 | ||
| 1M.Sc., Amirkabir University of Technology, Department of Civil & Enviromental Engineering | ||
| 2Professor, Amirkabir University of Technology, Department of Civil & Enviromental Engineering | ||
| 3Ph.D candidate, Amirkabir University of Technology, Department of Civil & Enviromental Engineering | ||
| چکیده | ||
| Fire and high temperatures are the most destructive accidental loads that a structure can be subjected to. There are numerous kinds of research concentrated on the effect of high temperature on physical and mechanical properties of rocks and concrete while there are a few inadequate investigations on marble and limestones. This work presents direct tensile tests results obtained under high temperatures on marble, travertine and concrete samples, previously heated at a namely temperature (350°C), were tested. Destructive tests of direct tensile tests and uniaxial compressive tests were performed on the samples. Furthermore, tests were carried out under air-cooled conditions to minimize the effect of the fire-off method and then physio-mechanical properties of thermally treated, and the reference samples at room temperature were discovered. The results show that direct tensile strength, and tensile modulus decrease as the temperature rises for the tested range of temperatures. After thermal treatment, the measured direct tensile strength is found to show a decrease up to 44%, 45%, 16.71% for Marble, travertine, and concrete samples respectively. Regarding Young’s modulus, a fall over 42% , 22% and 33% in air-cooled is observed. | ||
| کلیدواژه‌ها | ||
| Thermal treatment؛ Direct Tensile Strength؛ Marble؛ Travertine | ||
| مراجع | ||
|
[1] V. Vutukuri, R. Lama, R.S. Saluji, Handbook on Mechanical Properties of Rocks, Transtech Publication, 1974.
[2] C. Schellewald, Predictive Digitization, Restoration and Degradation Assessment of Cultural Heritage Objects, Deterioration Simulation, (2013).
[3] D. Sudarshan, A. Yves, Impact of fire on mechanical properties of concrete containing marble waste, Journal of King Saud University - Engineering Sciences, (2017).
[4] M. Hejazi, F. Fathi, H.R. Sadrarhami, Study of Mechanical Properties of Structural Lightweight Concrete Reinforced with Hybrid Fibers, Amirkabir Journal of Civil Engineering, 49(2) (2017) 335-346.
[5] H. Madani, A. Khaghani Boroujeni, A. Pourjhanshahi, Mechanical Properties and Photocatalytic Reactions of Zinc Oxide Nanoparticles in the Cement Environment, Amirkabir Journal of Civil Engineering, 50(2) (2018) 257-268.
[6] V. Kadlecek, Z. Spetla, Direct tensile strength of concrete, Journal Materials, 2 (1967) 749–767.
[7] A.M. Perras, M.S. Diederichs, A Review of the Tensile Strength of Rock: Concepts and Testing, Geotechnical and Geological Engineering, 32(2) (2014) 525–546.
[8] M.S. Diederichs, P.K. P.K. Kaiser, Tensile strength and abutment relaxation as failure control mechanics in underground excavations, International Journal of Rock Mechanics and Mining Sciences, 36(1) (1999) 69-96.
[9] P. Colback, An Analysis of Brittle Fracture Initiation And Propagation In the Brazilian Test, International Society for Rock Mechanics and Rock Engineering, (1966).
[10] Ozguven, O. Yilmaz, Effects of high temperature on physicomechanical properties of turkish natural building stones, Engineering Geology, 183 (2014).
[11] H. Yavuz, Thermal effect on the physical properties of carbonate rocks, International Journal of Rock Mechanics & Mining Sciences, (2010) 94- 103.
[12] T. Yin, P. Wang, X. Li , R. Shu, Z. Ye, Effects of thermal treatment on physical and mechanical characteristics of coal rock, Journal of Central South University, 23(9) (2016) 2336–2345.
Alvarado-Gil, Thermal effects on the physical properties of limestone from the yucatan peninsula, International Journal of Rock Mechanics and Mining Sciences, (2015) 182-189.
[18] Sadrmomtazi, B. Tahmouresi, Effect of Fiber on Mechanical Properties and Toughness of Self-Compacting Concrete Exposed to High Temperatures, Amirkabir Journal of Civil Engineering, 2(1) (2017) 153- 166.
[19] ASTM, Standard Test Method for Laboratory Determination of water Content of Soil and Rock by Mass, in: Active Standard ASTM D2216, 1998.
[20] T. Sriapai, T. Walsri, K. Fuenkajor, Effect of temperature on compressive and tensile strengths of salt, ScienceAsia- Journal of The Science Society of Thailand, 38 (2012) 166-174.
[21] ASTM, Standard Test Method for Determination of Water Content of Soil By Direct Heating, in: Active Standard ASTM D4959, West Conshohocken, 2016.
[22] ISRM, The Complete ISRM Suggested Methods for Rock Characterization, in: Testing and Monitoring, 1979.
[23] ASTM, Making and Curing Concrete Test Specimens in the laboratory, in, 2002.
[24] D. Deere, R.P. Miller, Engineering classification and index properties for intact rock, Geology, (1966).
[25] W. Brace, B. Paulding, C. Scholz, Dilatancy in the fracture of crystalline rocks, Journal of Geophysical Research, (1966) 939-953.
[26] P.R. Sheorey, Empirical Rock Failure Criteria, CRC Press, 1997.
[27] M. Hosseini, Effect of temperature as well as heating and cooling cycles on rock properties, Journal of Mining & Environment, 8(4) 631-644.
[28] C. Fairhurst, Measurement of Some Physical Properties of Rock, in: Symposium on Rock Mechanics, University Park, Pennsylvania, 1961.
[29] M. Etezadi, Factors Affecting on Direct and Indirect tensile strength of brittle materials, 2015.
[30] E. Mortaz, Theoretical and Experimental Analysis of effective parameters on direct tensile strength of rocks, Amirkabir university of Technology, 2013.
[31] G. Rong, J. Peng, M. Yao, Q. Jiang, L. Wong, Effects of specimen size and thermal-damage on physical and mechanical behavior of a fine-grained marble, Engineering Geology, 232 (2018) 46-55. | ||
|
آمار تعداد مشاهده مقاله: 581 تعداد دریافت فایل اصل مقاله: 398 |
||