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بررسی اثر نانو ژل ولاستونیت بر روی خواص کاربردی چوب سیمان ساخته شده از الیاف کاه برنج | ||
| تحقیقات علوم چوب و کاغذ ایران | ||
| مقاله 13، دوره 33، شماره 3 - شماره پیاپی 64، آذر 1397، صفحه 453-465 اصل مقاله (506.92 K) | ||
| نوع مقاله: مقاله پژوهشی | ||
| شناسه دیجیتال (DOI): 10.22092/ijwpr.2018.120242.1454 | ||
| نویسندگان | ||
| علی حسن پور تیچی* 1؛ بهزاد بازیار2 | ||
| 1استادیار، گروه علوم و صنایع چوب و کاغذ، دانشکده شهید هاشمی‌نژاد، دانشگاه فنی و حرفه‌ای استان مازندران، ایران | ||
| 2استادیار، دانشگاه آزاد اسلامی، واحد علوم و تحقیقات ، گروه صنایع چوب و کاغذ.، تهران، ایران | ||
| چکیده | ||
| DOR:98.1000/1735-0913.1397.33.453.64.3.1576.1580 در این مطالعه اثر نانو ژل ولاستونیت در سه سطح (0، 5 و 10 درصد وزنی سیمان) و نسبت اختلاط ماده لیگنو سلولزی به سیمان در سه سطح 10 به 90، 20 به80 و 30 به 70 بر خواص ریزساختاری، مکانیکی، فیزیکی و بیولوژیکی چند سازه ساخته شده از کاه برنج مورد بررسی قرار گرفته است. به این ترتیب با احتساب 9 تیمار، در مجموع 27 تخته آزمایشگاهی ساخته شد. خواص مکانیکی و فیزیکی نمونهها مطابق استاندارد 634-DIN-EN شامل مقاومت خمشی، مدول الاستیسیته، چسبندگی داخلی، جذب آب پس از 2 و 24 ساعت غوطهوری در آب، دانسیته و مقاومت به قارچ اندازهگیری شدند. تصاویر میکروسکوپی SEM جهت بررسی خواص ریز ساختاری چندسازه از نمونهها تهیه شد. نتایج نشان داد با افزایش نانو ژل ولاستونیت در تختهها مقاومت خمشی ، مدول الستیسیته ، چسبندگی داخلی و دانسیته بهطور معنیداری افزایش یافت. همچنین با افزایش نانو ژل ولاستونیت، ثبات ابعادی تختهها و مقاومت به قارچ در مقایسه با نمونه بدونه نانو افزایش یافت. نتایج میکروسکوپ الکترونی پویشی نیز نشان داد که هیدروکسید کلسیم پس از افزودن نانو ژل ولاستونیت باعث تشکیل ژل کلسیم سیلیکات هیدراته شدهاند. | ||
| کلیدواژه‌ها | ||
| سیمان؛ کاه برنج؛ دانسیته؛ نانو ژل ولاستونیت | ||
| عنوان مقاله [English] | ||
| Investigation on effect of nano gel wollastonite on properties usage of wood-cement composites manufactured from rice straw fibers | ||
| نویسندگان [English] | ||
| Ali Hasanpoor tichi1؛ Behzad Baziyar2 | ||
| 1Assistant Prof, Dep. of Wood Science and Engineering, Technical Faculty of No. 2, Mazandaran Branch, Technical and Vocational University (TVU), Sari, Iran | ||
| 2Dept. of Wood and Paper Science and Technology, Islamic Azad University(IAU), Tehran, Iran | ||
| چکیده [English] | ||
| In this study the effect of nano gel wollastonite usage in three level (0 , 5 and 10 percent per dry by weight of the cement) and the mixture ratios of lingocellulosic material to cement in three level 10:90, 20:80 and 30:70 on physical, mechanical , microscopic and biological properties of composite made from rice straw fibers- cement was investigated. Three replicates for each treatment and 27 experimental boards were manufactured. Specimens were prepared according to DIN- EN634 standard test methods to measure mechanical and physical properties. Mechanical and physical properties including static bending strength, modulus of elasticity, interior bonding(IB),water absorption after 2 and 24 hours immersion in the water , density and decay resistant (loss weight) were measured. Micro- structural properties of composites were evaluated by SEM images. The results showed that, bending strength , modulus of elasticity , interior bonding and density were significantly increased with increasing Nano gel wollastonite . Also, with increasing Nano gel wollastonite , dimensional stability and decay resistance were increased in comparison with the control sample. Results of scanning electron microscopy showed that the calcium hydroxide formed hydrated calcium silicate gel (C-S-H gel) after addition the Nano gel wollastonite . SEM images showed that the micro- structure of the boards were improved by increasing the nano- wollastonite content. | ||
| کلیدواژه‌ها [English] | ||
| Cement, Rice straw, Density, Nano gel wollastonite | ||
| مراجع | ||
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-Boshehrian, A. and Hosseini, P., 2011. Effect of nano-SiO2 particles on properties of cement mortar applicable for ferrocement elements. Concrete Research Letters, 2(1): 15-20. -Ciullo, P.A., 1997. Industrial minerals and their uses. Noyes, United States of America, 640p. -Doosthoseini, K. and Yazdi, M., 1996. The effects of chemical additives on the binding quality of Portland cement and aspen particles. Iranian Journal of Natural Resources, 48 (1): 47-58. -Doosthoseini, K., 2007. Wood composite materials manufacturing, applications. University of Tehran, Tehran, 648p. -DIN EN standard, NO. 634, 1995. Cement-bonded Particleboards. Specifications- general requirements; German version. -Haghighi, A., Taghiyari, H.R. and Karimi, A.N., 2013. Study on fire-retardant properties of nano-wollastonite in fir wood (Abies alba). Iranian Journal of Wood and Paper Science Research, 28(2): 258-265. -Halvarsson, S., Ediund, H. and Norgren, M., 2009. Manufacture of High-Performance Rice-Straw Fiberboards. Industrial & Engineering Chemistry Research, 49(3): 1428–1435 -Hosseinpourpia, R., Varshoee, A., Soltani, M., Hosseini, P. and Ziaei Tabari. H., 2011. Production of waste bio-fiber cement-based composites reinforced with nano-SiO2 particles as a substitute for asbestos cement composites. Journal Construction and Building Materials, 31: 105–111. -Hassanpoortichi, A., Bazyar, B., Khademieslam, H., Rangavar, H. and Talaeipour, M., 2016. The effect of nano-wollastonite on biological, mechanical, physical, and microstructural properties of the composite made of wood-cement fiber. Journal of Fundamental and Applied Sciences, 8(35): 1466–1479. -Hassanpoortichi, A., Bazyar, B., Khademieslam, H., Rangavar, H. and Talaeipour, M., 2015. Effect of nano-wollastonite on microscopic, mechanical and physical properties of cement-wood fibers composite. Iranian Journal of Wood and Paper Science Research. 3(4): 567–577. (In Persian). -Karade, S.R., 2010. Cement-bonded composites from lignocellulosic wastes. Construction and building materials, 24(8): 1323-1330. -Khosrviyan, B., 2009. The study of mechanical, physical, thermal and morphological properties of hybrid multi- structures and nano hybrid polypropylene wood flour/ wollastonite multi- structures. M.S. thesis, Department of Natural Resource, The University of Tehran, karaj, 103p. -Li, H., Xiao, H. and Ou, J., 2004. A study on mechanical and pressure-sensitive properties of cement mortar with nanophase materials. Cement and Concrete Research, 34(3): 435-438. -Luyt, A.S., Dramicanin, M.D., Antic, Z. and Djokovic, V., 2009. Morphology, mechanical and thermalproperties of composites of polypropylene and nanostructured wollastonite filler. Polymer testing, 28: 348-356. -Mohammad Kazemi, F., 2010. Investigation of the effect of nano- SiO2 on applied properties of wood-cement boards manufactured by old corrugated container(OCC) and rice husk. M. S. thesis, Department of Natural Resource, The University of Tehran, karaj, 84p. -Rangavar, H., Kargarfard, A., and Hoseiny Fard, MS., 2016. Investigation on Effect of cement Types on the cement hydration and properties of wood-cement composites manufactured using sunflower stalk (Helianthus Annuus) Iranian Journal of Wood and Paper Science Research, 31 (2), 336 – 348. (In Persian) -Rowell, P.M., Youngquist, J.A. and Mcnatt, D., 1991. Agricultural fibers in composition panels. In Proceedings of the 27th International Particleboard Composite Materials Symposium.USA, 9-11 April:301-314. -Sandermann, W. and Kohler, R., 1964. Studies on inorganic- bonded wood materials. Part 4: A short test of the aptitudes of woods for cement-bonded materials. Holzforschung, 18: 53-59. -Soliman, A, M., 2011. Effect nano wollastonite for compression strength of concrete. Ph.D. thesis, Department of Civil and Environmental Engineering, The University of Western Ontario London, Canada, 410p. -Wen, L., Yu-he, D., Mei, Z., Ling, X. and Qian, F., 2006. Mechanical properties of nano-sio2 filled gypsum particleboard. Trans. Nonferrous Metals Society of China 16s. 361-364. | ||
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