مطالعه عمل‌آوری، جمع‌شدگی در چسبندگی ملات اصلاح شده پلیمری با بتن، با اعمال "انتقال‌اصطکاک" و "کشش‌مستقیم"

مهندسی عمران فردوسی

مقاله 6، دوره 33، شماره 1 - شماره پیاپی 29، خرداد 1399، صفحه 85-100   

نوع مقاله: پژوهشی

شناسه دیجیتال (DOI): 10.22067/civil.v1i33.82639

نویسندگان

محمود نادری¹؛ علی صابری ورزنه^{* 2}

¹دانشکده مهندسی عمران، دانشگاه بین المللی امام خمینی (ره).

²دانشکدة مهندسی عمران، دانشگاه بین المللی امام خمینی (ره).

چکیده

بهبود چسبندگی بین ملات ‌تعمیری و بستر قدیم بستگی به عواملی ازجمله کاهش جمع‌شدگی، عمل‌آوری مناسب و استفاده از پلیمرهای اصلاح‌کننده دارد. لذا در این مقاله، مقاومت چسبندگی بین لایۀ تعمیری و بستر بتنی مورد ارزیابی قرار گرفته است. برای تعیین مقاومت چسبندگی از روش‌های "انتقال اصطکاک" و "کشش ‌مستقیم" استفاده شده که به ترتیب مقاومت چسبندگی برشی و کششی را تعیین می‌نمایند. ملات‌های استفاده شده حاوی 10، 15 و 20 درصد پلیمر از نوع استایرن‌بوتادین‌رابر، نسبت به وزن سیمان هستند که نتایج با ملات ساده مقایسه شده است. سه نوع عمل‌آوری به کار گرفته شد و جمع‌شدگی ملات‌ها نیز مورد بررسی قرار گرفت. نتایج بیانگر تأثیر زیاد پلیمر بر چسبندگی و جمع‌شدگی ملات­ها است. همچنین ضریب همبستگی بالا بین روش‌های "انتقال اصطکاک" و "کشش ‌مستقیم" مشاهده شد.

کلیدواژه‌ها

چسبندگی؛ ملات تعمیری؛ جمع‌شدگی؛ پلیمر اصلاح کننده؛ کشش مستقیم

سایر فایل های مرتبط با مقاله

6-Saberi - Revised.pdf

مراجع

1. Van Gemert, D., Czarnecki, L., Maultzsch, M., et al. "Cement concrete and concrete– polymer composites: two merging worlds". Cement & Concrete Composites. Vol. 27, Issue. 9, pp. 926–933, (2005).

2. Beushausen, H. and Gillmer, M.,"The use of superabsorbent polymers to reduce cracking of bonded mortar overlays", Cement & Concrete Composites, Vol. 52, No. 1, pp. 1-8, (2014).

3. Hwang, E. H., and Jeon, J. K. "Effect of polymer cement modifiers on mechanical and physical properties of polymer-modified mortar using recycled artificial marble waste fine aggregate". Journal of Industrial and Engineering Chemistry. Vol. 14, No. 2, pp. 265–271, (2008).

4. Hassan, K. E., Brooks, J. J., and Al- Alawi, L. "Compatibility of repair mortars with concrete in a hot-dry environment". Cement & Concrete Composites. Vol. 23, No. 1, pp. 93–101, (2003).

5. Afridi, M. U. K., Ohama, Y., Zafar Iqbal, M. and Demura, K. "Water Retention and Adhesion of Powdered and Aqueous Polymer-Modified Mortars". Cement And Concrete Composites, Vol. 17, No. 2, pp. 113-118, (1995).

6. Çavdar, A., Sevin, S., Kaya, Y. and Bingöl, Ş. "The Effects of Cure Conditions on Mechanical Properties of Polymer Modified Cement Mortars". Balkan Journal of Electrical & Computer Engineering, Vol. 2, No. 2, pp. 79-85, (2014).

7. Doğan, M. and Bideci, A. "Effect of Styrene Butadiene Copolymer (SBR) admixture on high strength concrete". Construction and Building Materials, Vol.112, No. 1, pp. 378-385, (2016).

8. Knapen, E. and Van Gemert, D. "Polymer film formation in cement mortars modified with water-soluble polymers". Cement and Concrete Composites, Vol. 58, No. 1, pp. 23-28, (2015).

9. Ahmed, S. A., Hawraa, S.J. and Inas, S. M. "Improvement the Properties of Cement Mortar by Using Styrene Butadiene Rubber Polymer". Engineering and Development, Vol. 16, No. 3, pp. 61-72, (2012).

10. Shuyi, Y. and Yong, G. "Effect of Styrene Butadiene Rubber Latex on Mortar and Concrete Properties", Advanced Engineering Forum, Vol. 5, No. 1, pp. 283-288, (2012).

11. Tilly, G. P. and Jacobs, J. "Concrete repairs: Observations on performance in service and current practice", Watford, UK, (2007).

12. Martinola, G., Sadouki, H. and Wittmann, F. "Numerical model for minimizing the risk of damage in a repair system", J. Mater. Civ. Eng, Vol. 13, No. 2, pp. 121–129, (2001).

13. Zhang, W., Zakaria, M. and Hama, Y. "Influence of aggregate materials characteristics on the drying shrinkage properties of mortar and concrete", Construction and Building Materials, Vol. 49, No. 1, pp. 500-510, (2013).

14. Bin, M. F. and Zain, H. M. "The study on the physical properties of surface layer concrete under the influence of medium temperature environments", Kyushu university, Ph.D thesis, (1996).

15. Diab, A. M., Elyamany, H. E. and Ali, A. H. "Experimental investigation of the effect of latex solid/water ratio on latex modified co-matrix mechanical properties", Alexandria Engineering Journal. Vol. 52, No. 1, pp. 83-98, (2013).

16. Carneiro, F. and Barcellos, A. "International association of testing and research laboratories for materials and structures", RILEM bull, Vol. 13, No. 2, pp. 99-125, (1953).

17. Kreigh, J. "Arizona slant shear test: a method to determine epoxy bond strength", ACI Journal, Vol. 73, No. 7, pp. 372-373, (1976).

18. Posi, P., Kasemsiri, P., Lertnimoolchai, S. and Chindaprasirt, P. "Effect of fly ash fineness on compressive, flexural and shear strengths of high strength-high volume fly ash jointing mortar", International Journal, Vol. 16, Issue. 54, pp. 36-41, (2019).

19. Beushausen, H. and Bester, N. "The influence of curing on restrained shrinkage cracking of bonded concrete overlys", Cement and concrete research, Vol. 87, No. 1, pp. 87-96, (2016).

20. Sabah, S. A., Hassan, M., Bunnori, N. M. and Johari, M. "Bond strength of the interface between normal concrete substrate and GUSMRC repair material overlay", Construction and Building Materials, Vol. 216, No. 1, pp. 261-271, (2019).

21. Abu-Tair, A., Rigden, S. and Burley, E. "Testing the bond between repair materials and concrete substrate", Materials Journal, Vol. 93, No. 6, pp. 553-558, (1996).

22. Kunieda, M., Kurihara, N., Uchida, Y. and Rokugo, K. "Application of tension softening diagrams to evaluation of bond properties at concrete interfaces", Engineering Fracture Mechanics, Vol. 65, No. 2, pp. 299-315, (2000).

23. ASTM C1583, "Standard test method for tensile strength of concrete surfaces and the bond strength or tensile strength of concrete repair and overlay materials by direct tension (pull-off method)", West Conshohocken PA, American Society for Testing and Materials (2004).

24. Naderi, M. "Friction-Transfer Test for the Assessment of in-situ Strength & Adhesion of Cementitious Materials", Construction & Building Materials, Vol. 19, No. 6, pp. 454-459, (2005).

25. Naderi. M. and Shibani. R. "New Method for Nondestructive Evaluation of Concrete Strength". Australian Journal of Basic Applied Sciences. Vol. 7, No. 2, pp. 438-447, (2013).

26. Naderi, M. "An alternative method for in situ determination of rock strength", Can. Geotech. J. Vol. 48, No. 12, pp. 1901-1905, (2011).

27. Naderi, am. "Evaluating in situ shear strength of bituminous pavments", Proceedings of the institution of Civil Engineering, Vol. 159, No. 2, pp 61-65, (2006).

28. Naderi, M. "Adhesion of different concrete repair systems exposed to different environments", J. Adhes, Vol. 84, No. 1, pp. 78–104, (2008).

29. Naderi, M. and Ghodousian, O. "Adhesion of Self-Compacting Overlays Applied to Different Concrete Substrates and Its Prediction by Fuzzy Logic", The Journal of Adhesion, Vol. 88, No. 10, pp. 848-865, (2012).

30. Naderi, M. "Effects of Cyclic Loading, Freeze-Thaw and Temperature Changes on Shear Bond Strengths of Different Concrete Repair Systems", The Journal of Adhesion, Vol. 84, No. 9, pp. 743-763, (2008).

31. ASTM C136-01, "Standard Test Method for Sieve Analysis of Fine and Coarse Aggregates", American Society for Testing and Materials, (2001).

32. ASTM C127-15. "Standard Test Method for Relative Density (Specific Gravity) and Absorption of Fine Aggregate", ASTM International, West Conshohocken, PA, (2015).

33. ASTM C128-15. "Standard Test Method for Relative Density (Specific Gravity) and Absorption of Coarse Aggregate", ASTM International, West Conshohocken, PA, (2015).

34. ASTM C157/C157M, "Standard Test Method for Length Change of Hardened Hydraulic Cement Mortar and Concrete", American Society for Testing and Materials, (2014).

35. ASTM C490/C490M, "Standard Practice for Use of Apparatus for the Determination of Length Vhange of Hardened Cement Paste, Mortar and Concrete", American Society for Testing and Materials, (2011).

36. INSO 17039, "Length Change of Hardened Hydraulic Cement Mortar and Concrete Test Method", Iranian National Standardization Organization, (2013).

37. INSO 17042, "Apparatus for Determination of Length Change of Hardened Cement Paste, Mortar and Concrete", Iranian National Standardization Organization, (2013).

38. Czarnecki, L. and Sokołowska, J. J. "Material model and revealing the truth", Bull. Pol. Ac.: Tech. Vol. 63, No. 1, pp. 7–14, (2015).

39. Ohama, Y. "Polymer Modified Concrete Mortars- Properties and Process Technology". Noyes, United States of America. (1995).

40. Baoshan, H., Wu, H., Shu, X. and Burdette, E. G. "Laboratory evaluation of permeability and strength of polymer-modified pervious concrete", Construction and Building Materials, Vol. 24, No. 5, pp. 818–823, (2010).

41. Jiang, H. Y. and Liu, Z. X. "Research of Polymer Cement Concrete", Journal of Wu Han University of Technology, Vol. 18, No. 2, pp. 37-38, (1996)