بررسی مشخصات مکانیکی و دوام در محیط اسیدی ملات های پلیمری اصلاح شده حاوی پودر شیشه و سرباره مسلح شده با الیاف ترکیبی

نوع مقاله : مقاله پژوهشی

نویسنده

استادیار فنی- دپارتمان مهندسی عمران - آموزشکده فنی امام صادق(ع) - دانشگاه فنی و حرفه ای استان گیلان- ایران

10.22124/jcr.2022.21489.1551

چکیده

در این تحقیق، مشخصات مکانیکی و دوام ملات های پلیمری اصلاح شده با پلیمر استایرن بوتادین رزین (SBR) و حاوی پودر شیشه و سرباره مسلح شده با الیاف ترکیبی مورد بررسی قرار گرفته است. طرح های اختلاط مختلف حاوی و فاقد SBR با در نظر گرفتن مقادیر متفاوت پودر شیشه و سرباره به صورت مجزا و ترکیبی و علاوه بر آن‌ها اثر حضور مجزا و ترکیبی الیاف شیشه، پلی پروپیلن و فولادی مورد بررسی گرفته است. در تمام طرح های حاوی الیاف، مقاومت کششی و خمشی افزایش یافته است. همچنین حضور SBR باعث بهبود این مقاومت ها شده است. بالاترین بهبود مقاومت خمشی نهایی در ملات های پلیمری اصلاح شده حاوی الیاف ترکیبی پلی‌پروپیلن، شیشه و فولادی بوده است. این طرح ها با حضور 10% پودر شیشه، 10% سرباره، و 5% پودر شیشه و 5% سرباره بترتیب 05/36، 84/31 و 06/41 درصد افزایش نسبت به طرح شاهد نشان داده‌اند. ملات های پلیمری اصلاح شده دارای مقادیر چقرمگی T_150^D بالاتری نسبت به طرح های بدون پلیمر بوده‌اند و حضور SBR به شکل قابل توجهی جذب انرژی را بهبود داده است. همچنین در طرح هایی که از 5% سرباره و 5% پودر شیشه استفاده شده است، مقادیر جذب انرژی بیشتر بوده است. استفاده از پلیمر SBR تأثیر بسیار زیادی در بهبود دوام در برابر محیط اسیدی داشته است. این تأثیر هم در کاهش افت وزن نمونه ها پس از قرارگیری در اسید سولفوریک و هم در بهبود مقاومت باقیمانده پس از قرارگیری در اسید مشاهده شده است.

کلیدواژه‌ها

موضوعات

عنوان مقاله [English]

Investigating the mechanical properties and durability in acidic environment of hybrid fiber-reinforced polymer modified mortars containing glass powder and slag

نویسنده [English]

  • komeil momeni
Department of Civil Engineering, Faculty of Imam sadeq Astaneh ashrafiyeh, Guilan Branch, Technical and Vocational University (TVU), Guilan, Iran
چکیده [English]

In the current study, mechanical properties and durability of polymer modified mortars by Styrene Butadiene Resin (SBR) containing glass powder and slag is studied. Different mix design with and without SBR is regarded by consideration of different amount of glass powder and slag individually or simultaneously, and furthermore, hybrid or individual presence on glass, polypropylene, and steel fibers is investigated. In all of the fiber-reinforced mixes, tensile and flexural strengths were increased. Also, the presence of SBR improved these strengths. The maximum of flexural strength was observed in polymer modified mortars contained hybrid fibers of glass, polypropylene, and steel. In these mixes with presence of 10% glass powder, 10% slag and, 5% slag and 5% glass powder, the flexural strength increased 36.05, 31.84 and 41.06% , respectively. Polymer modified mortars showed higher T_150^D toughness and the presence of SBR significantly increased the energy absorption of mixes. Moreover, simultaneous use of glass powder and slag enhanced the energy absorption. The use of SBR drastically improved the durability against acidic environment. The effect was observed in weight loss, and residual strength of samples after exposure the sulfuric acid environment. The residual compressive strength after exposure to acid in polymer modified mortars contained polypropylene and steel fibers with presence of 10% glass powder, 10% slag and, 5% slag and 5% glass powder, were respectively, 33.26, 33.42 and 33.76% higher than control sample.

کلیدواژه‌ها [English]

  • Polymer Modified Mortar
  • SBR
  • Energy Absorption
  • Durability
  • Fibers

مراجع

[1] Barluenga, G. and Herna´ndez, F. (2004) "SBR latex modified mortar rheology and mechanical behaviour," Cement and Concrete Research pp. 527–535.
[2] Diab, A. M., Elyamany, H. E. and Ali, A. H. (2014) "The participation ratios of cement matrix and latex network in latex cement co-matrix strength," Alexandria Engineering Journal.
[3] Manson, J. A. (1976) "Modifications of Concretes with Polymers," Materials Science and Engineering, pp. 41-52.
[4] Beushausen, H. and Gillmer, M. (2014) "The use of superabsorbent polymers to reduce cracking of bonded mortar overlays," Cement & Concrete Composites.
[5] Beushausen, H., Gillmer, M. and Alexander, M. (2014)"The influence of superabsorbent polymers on strength and durability properties of blended cement mortars," Cement & Concrete Composites.
[6] Fowler, D. W. (1999) "Polymers in concrete: a vision for the 21st century," Cement & Concrete Composites, pp. 449-452.
[7] Lewis, W. J. and Lewis, G. (1990) "The influence of polymer latex modifiers on the properties of Concrete," COMPOSITES, vol. 21, pp. 487-494.
[8] Mahdi, F., Abbas, H. and Khan, A. A. (2013) "Flexural, shear and bond strength of polymer concrete utilizing recycled resin obtained from post consumer PET bottles," Construction and Building Materials pp. 798–811.
[9] Hwang, E. H. and Ko, Y. S. (2008) "Comparison of mechanical and physical properties of SBR-polymer modified mortars using recycled waste materials," Journal of Industrial and Engineering Chemistry pp. 644–650.
[10] Shaker, F. A., El-Dieb, A. S. and Reda, M. M. (1997) "Durability of Styrene-Butadiene Latex Modified Concrete," Cement and Concrete Research, vol. 27, pp. 711-720.
[11]Rossignolo, J. A. and Agnesini, M. V. C. (2004) "Durability of polymer-modified lightweight aggregate concrete," Cement & Concrete Composites pp. 375–380.
[12] Rossignolo, J. A. and Agnesini, M. V. C. (2002) "Mechanical properties of polymer-modified lightweight aggregate concrete," Cement and Concrete Research pp. 329-334.
[13] Thamboo, J. A., Dhanasekar, M. and Yan, C. (2013) "Flexural and shear bond characteristics of thin layer polymer cement mortared concrete masonry," Construction and Building Materials pp. 104–113.
[14] Brien, J. V. and Mahboub, K. C. (2007) "Influence of polymer type on adhesion performance of a blended cement mortar," International Journal of Adhesion & Adhesives, pp. 7-13.
[15] Courard, L., Piotrowski, T. and Garbacz, A. (2014) "Near-to-surface properties affecting bond strength in concrete repair," Cement & Concrete Composites pp. 73–80.
[16] Espeche, A. D. and León, J. (2011) "Estimation of bond strength envelopes for old-to-new concrete interfaces based on a cylinder splitting test," Construction and Building Materials pp. 1222–1235.
[17] Julio, E. N. B. S., Branco, F. A. B. and Silva, V. D. (2004) "Concrete-to-concrete bond strength. Influence of the roughness of the substrate surface," Construction and building materials, pp. 675-681.
[18] Momayez, A., Ehsani, M. R., Ramezanianpour, A. A. and Rajaie, H. (2005) "Comparison of methods for evaluating bond strength between concrete substrate and repair materials," Cement and Concrete Research, pp. 748-757.
[19] Sadrmomtazi, A., Kohani Khoshkbijari, R., (2019) " Determination and Prediction of Bonding Strength of Polymer Modified Concrete (PMC) as the Repair Overlay on the Conventional Concrete Substrate", KSCE Journal of Civil Engineering. Vol. 23, No. 3.
[20] Sadrmomtazi, A., Kohani Khoshkbijari, R., (2017) “Bonding durability of Polymer Modified Concrete repair overlays under freeze–thaw conditions," Magazine of Concrete Research, Vol. 69, Issue 24. pp. 1268-1275.
[21] Azadmanesh, H., Hashemi, S.A.H., Ghasemi,S.H.,(2021).” The effect of styrene-butadiene rubber and ethylene vinyl acetate polymers on the mechanical properties of Engineered Cementitious Composites”, Composites Communications, Vol. 24.
[22] Shi, C., Wang, P., Ma, C., Zou, X., Yang, L.,(2020),” Effects of SAE and SBR on properties of rapid hardening repair mortar”, Journal of Building Engineering, Vol.35.
[23] Idrees, M., Saeed, F., Amin, A., Hussain, T., (2021),” Improvement in compressive strength of Styrene-Butadiene-Rubber (SBR) modified mortars by using powder form and nanoparticles”, Journal of Building Engineering, Vol.44.
[24] ASTM, (2016), “C33 / C33M-16 : Standard Specification for Concrete Aggregates,", ASTM International.
[25] ACI, (2009), “ACI committee 548. 3R-09: Report on Polymer-Modified Concrete," ed: American Concrete Institute.
[26] ASTM, (2002), “C 192/C 192M-02 : Standard Practice for Making and Curing Concrete Test Specimens in the Laboratory,", ASTM International.
[27] ASTM, (2005), “C109/C109M-05 : Standard Test Method for Compressive Strength of Hydraulic Cement Mortars.”, ASTM International.
[28] ASTM, (2013), “C642-13 : Standard test method for density, absorption, and voids in hardened concrete.”
[29] ASTM, (2004), “C496 / C496M-11 : Standard Test Method for Splitting Tensile Strength of Cylindrical Concrete Specimens.", ASTM International.
[30] ASTM, (2019), “C1609 / C1609M – 19a : Standard Test Method for Flexural Performance of Fiber-Reinforced Concrete (Using Beam With Third-Point Loading).”,ASTM International.
[31] Aminul Haque, M., Chen, B., Riaz Ahmad, M., Ali shah, S.F.,(2020), “Mechanical strength and flexural parameters analysis of micro-steel, polyvinyl and basalt fibre reinforced magnesium phosphate cement mortars”, Construction and building materials, Vol.235.
[32] Bertelsen, I.M.G., Ottosen, L.M., Fischer, G., (2020),“Influence of fibre characteristics on plastic shrinkage cracking in cement-based materials: A review”, Construction and building materials, Vol.230.

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