پژوهشنامه حمل و نقل

پژوهشنامه حمل و نقل

ترک‌خوردگی جمع‌شدگی خمیری در روسازی‌های بتنی: ارزیابی نقش‌های رقابتی افزودنی اصلاح‌کننده گرانروی (VMA) و الیاف میکرو پلی‌پروپیلن

نوع مقاله : مقاله پژوهشی

نویسندگان
1 دانشجوی دکتری، دانشکده مهندسی عمران، دانشگاه علم و صنعت ایران، تهران، ایران
2 استاد، دانشکده مهندسی عمران، دانشگاه علم و صنعت ایران، تهران، ایران
چکیده
استفاده از مواد و مصالح نوین در صنعت راهسازی با هدف کنترل ایجاد و گسترش خرابی‌های سطح روسازی و همچنین بهینه کردن هزینه‌های کاربران اهمیت فراوان دارد. یکی از خرابی‌های رایج در روسازی‌های بتنی ترک‌خوردگی خمیری است. کاهش رشد و شدت این خرابی در عملکرد و دوام روسازی‌های بتنی موثر است. در تحقیق حاضر به بررسی تغییرات شدت ترک خوردگی خمیری روسازی‌های بتنی متاثر از افزودن اصلاح کننده گرانروی بتن (VMA) و الیاف میکرو پلی پروپیلن مصنوعی با استفاده از تحلیل تصاویر میکروسکوپیک نوری پرداخته شده است. در همین راستا متوسط عرض، طول و مساحت ترک خوردگی ناشی از جمع شدگی خمیری مطابق با روش استاندارد ASTM C1579 ارزیابی گردید. نتایج نشان داد که الیاف و ماده VMA اثر چشمگیر بر رفتار ترک خوردگی دارد. الیاف منجر به کاهش متوسط عرض، طول و مساحت ترک خوردگی به ترتیب حداکثر تا میزان 50، 37 و 69 درصد گردید. اما، ماده VMA باعث افزایش متوسط عرض، طول و مساحت ترک خوردگی به ترتیب حداکثر تا میزان 11، 11 و 17 درصد شده است. بیشترین کاهش متوسط عرض، طول و مساحت ترک خوردگی به ترتیب به میزان 47، 33 و 60 در مخلوط بتنی حاوی هر دو ماده رخ داد. الیاف باعث تغییرات عرضی بیشتر شده، اما ماده VMA باعث تغییرات عرضی و طولی مشابه گردید. در مخلوط بتنی با مقادیر الیاف پایین‌تر (455 گرم) و مقادیر مختلف ماده VMA، تغییرات عرضی و طولی مشابه بوده، اما در مقادیر الیاف بالاتر (910 گرم) و مقادیر مختلف ماده VMA ، اثر الیاف بر تغییرات عرضی و طولی ترک خوردگی غلبه کرده و تغییرات ترک عرضی بیشتر از ترک طولی شده است. یافته‌های این تحقیق می‌تواند در بهینه‌سازی طرح اختلاط بتن روسازی جهت بهبود مقاومت ترک‌خوردگی زودهنگام مفید باشد.
کلیدواژه‌ها
موضوعات

عنوان مقاله English

Plastic Shrinkage Cracking in Concrete Pavements: Assessing the Competing Roles of Viscosity Modifying Agent (VMA) and Micro Polypropylene Fibers

نویسندگان English

Ehsan Sobhanifard 1
Hassan Ziari 2
1 Ph.D., Student, School of Civil Engineering, Iran University of Science and Technology, Tehran, Iran.
2 Professor, School of Civil Engineering, Iran University of Science and Technology, Tehran, Iran.
چکیده English

The incorporation of novel materials in the pavement construction is essential for mitigating the initiation and propagation of early-age distresses as well as optimizing the costs of users. Plastic shrinkage cracking is a prevalent form of early damage in concrete pavements, significantly affecting durability. Present study investigates the changes in the severity of plastic shrinkage cracking distress in concrete pavements influenced by the addition of concrete viscosity modifier agent (VMA) and micro synthetic polypropylene fibers using microscopic image analysis. In this regard the average width, length, and area of plastic shrinkage cracking were evaluated according to the ASTM C1579 standard method. The results showed that the fibers and VMA material have a significant effect on cracking behavior. The fibers led to a decrease in the average width, length, and area of cracks by a maximum of 50%, 37%, and 6%, respectively. However, the VMA material increased the average width, length, and area of cracks by a maximum of 11%, 11%, and 17%, respectively. The greatest reduction in the average width, length and area of cracks occurred in the concrete mixture containing both materials, by 47%, 33% and 60%, respectively. The fibers caused more transverse changes, but the VMA material caused similar transverse and longitudinal changes. In the concrete mixture with lower fiber amounts (455 g/m3) and different VMA materials, the transverse and longitudinal changes were similar, but in higher fiber amounts (910 g/m3) and different VMA materials, the effect of fibers dominated the transverse and longitudinal changes of cracking, and transverse changes occurred more than longitudinal changes. These findings contribute to a more optimized design of concrete mixtures for enhanced resistance to early-age cracking in pavement applications.

کلیدواژه‌ها English

Concrete Pavement
Plastic Shrinkage Cracking
Micro Polypropylene Fibers
Concrete Viscosity Modifier Agent (VMA)
Cracking Severity
-Abdulridha, M. A., Salman, M. M. & Banyhussan, Q. S. (2021). Effect Polypropylene of Fiber on Drying Shrinkage Cracking of Concrete Pavement Using Response Surface Methodology. Journal of Engineering and Sustainable Development, 25(3), 10–21.
doi.org/10.31272/jeasd.25.3.2
-Anas, M., Khan, M., Bilal, H., Jadoon, S. & Khan, M. N. (2022). Fiber Reinforced Concrete: A Review  Engineering Proceedings, 22(1), 1–7.
 doi.org/10.3390/engproc2022022003
-Bendimerad, A. Z., Delsaute, B., Rozière, E., Staquet, S. & Loukili, A. (2020). Advanced techniques for the study of shrinkage-induced cracking of concrete with recycled aggregates at early age. Construction and Building Materials, 233, 117340.
 doi.org/10.1016/j.conbuildmat.2019.117340
-Bertelsen, I. M. G., Ottosen, L. M. & Fischer, G. (2019). Quantitative analysis of the influence of synthetic fibres on plastic shrinkage cracking using digital image correlation. Construction and Building Materials, 199, 124–137. doi.org/10.1016/j.conbuildmat.2018.11.268
-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, 230, 116769.
doi.org/10.1016/j.conbuildmat.2019.116769
-Bessaies-Bey, H., Khayat, K. H., Palacios, M., Schmidt, W. & Roussel, N. (2022). Viscosity modifying agents: Key components of advanced cement-based materials with adapted rheology. Cement and Concrete Research, 152, 106646.
-Chen, J., Qiao, M., Gao, N., Wu, J., Shan, G., Zhu, B. & Ran, Q. (2021). Acrylate based post-acting polymers as novel viscosity modifying admixtures for concrete. Construction and Building Materials, 312, 125414.
-Chen, Y., Figueiredo, S. C., Li, Z., Chang, Z., Jansen, K., Çopuroğlu, O. & Schlangen, E. (2020). Improving printability of limestone-calcined clay-based cementitious materials by using viscosity-modifying admixture. Cement and Concrete Research, 132, 106040.
-Combrinck, R., Kayondo, M., le Roux, B. D., de Villiers, W. I. & Boshoff, W. P. (2019). Effect of various liquid admixtures on cracking of plastic concrete. Construction and Building Materials, 202, 139–153.
doi.org/10.1016/j.conbuildmat.2018.12.060
-Goyena, R. & Fallis, A. . (2019). Pavement Engineering - Principles and Practice. In Journal of Chemical Information and Modeling, Vol. 53, Issue 9.
­doi.org/10.1017/CBO9781107415324.004
-Gupta, R. & Banthia, N. (2016). Correlating plastic shrinkage cracking potential of fiber reinforced cement composites with its early-age constitutive response in tension. Materials and Structures/Materiaux et Constructions, 49(4), 1499–1509.
doi.org/10.1617/s11527-015-0591-9
 -Kori, K. & Goliya, S. S. (2022). Use of Discrete fiber in road pavement. Materials Today: Proceedings, 65(August), 1856–1860. doi.org/10.1016/j.matpr.2022.05.042
-Kumar, R. (2022). Hybrid Fiber Reinforced Concrete Composite for Construction of Rigid Pavements. Journal of Cement Based Composites, 3(1), 1–8.
 doi.org/10.36937/cebacom.2022.5630
-Liu, Q., Xiao, J. & Singh, A. (2021). Quantification of plastic shrinkage and cracking in mortars containing different recycled powders using digital image correlation technique. Construction and Building Materials, 293, 123509.
doi.org/10.1016/j.conbuildmat.2021.123509
-Ma, H. & Zhang, Z. (2020). Paving an engineered cementitious composite ( ECC ) overlay on concrete airfield pavement for reflective cracking resistance. Construction and Building Materials, 252, 119048. doi.org/10.1016/j.conbuildmat.2020.119048
-Mazzoli, A., Monosi, S. & Plescia, E. S. (2015). Evaluation of the early-age-shrinkage of Fiber Reinforced Concrete (FRC) using image analysis methods. Construction and Building Materials, 101, 596–601. doi.org/10.1016/j.conbuildmat.2015.10.090
-Moelich, G. M., van Zyl, J. E., Rabie, N. & Combrinck, R. (2021). The influence of solar radiation on plastic shrinkage cracking in concrete. Cement and Concrete Composites, 123(July), 104182.
doi.org/10.1016/j.cemconcomp.2021.104182
-Monazami, M., Sharma, A. & Gupta, R. (2022). Evaluating performance of carbon fiber-reinforced pavement with embedded sensors using destructive and non-destructive testing. Case Studies in Construction Materials, 17(June), e01460.
doi.org/10.1016/j.cscm.2022.e01460
-Olivier, G., Combrinck, R., Kayondo, M. & Boshoff, W. P. (2018). Combined effect of nano-silica, super absorbent polymers, and synthetic fibres on plastic shrinkage cracking in concrete. Construction and Building Materials, 192, 85–98.
 doi.org/10.1016/j.conbuildmat.2018.10.102
-Ozturk, O. & Ozyurt, N. (2022). Effects of Polypropylene Macro Fibers on the Structural Requirements, Cost and Environmental Impact of Concrete Pavements. Engineering Proceedings, 32.
doi.org/10.3390/engproc2022017032
 -Pelisser, F., Neto, A. B. D. S. S., Rovere, H. L. La & Pinto, R. C. D. A. (2010). Effect of the addition of synthetic fibers to concrete thin slabs on plastic shrinkage cracking. Construction and Building Materials, 24(11), 2171–2176. doi.org/10.1016/j.conbuildmat.2010.04.041
-Safiuddin, M., Kaish, A. B. M. A., Woon, C. O. & Raman, S. N. (2018). Early-age cracking in concrete: Causes, consequences, remedial measures, and recommendations. Applied Sciences, 8(10), 1730.
-Sayahi, F., Emborg, M., Hedlund, H. & Cwirzen, A. (2021). Effect of steel fibres extracted from recycled tyres on plastic shrinkage cracking in self-compacting concrete. Magazine of Concrete Research, 73(24),1270–1282.
doi.org/10.1680/jmacr.20.00116
-Sayahi, F., Emborg, M., Hedlund, H., Cwirzen, A. & Stelmarczyk, M. (2021). The severity of plastic shrinkage cracking in concrete: A new model. Magazine of Concrete Research, 73(6), 315–324.
doi.org/10.1680/jmacr.19.00279
-Shahin, M. Y. (2005). Pavement management for airports, roads, and parking lots, Vol. 501. Springer New York.
-Sobhani Fard, E., Ziari, H., Sobhani Fard, R., & Amiri, M. (2025). Evaluation the effect of hybrid polypropylene synthetic fibers and concrete viscosity modifier agent on plastic shrinkage cracking distress in jointed plain concrete pavements. Journal of Transportation Research, 22(2), 441-454
-Wang, Z. jian, Liu, Y. dong, Luo, W. yu, Wu, L. ming, Ye, X. yang & Zhang, X. (2024). An analysis of the mechanical properties of precast steel fiber reinforced concrete pavement joints. Mechanics of Advanced Materials and Structures, 31(7), 1588–1596.
doi.org/10.1080/15376494.2022.2139875
-Wyrzykowski, M., Ghourchian, S., Münch, B., Griffa, M., Kaestner, A. & Lura, P. (2021). Plastic shrinkage of mortars cured with a paraffin-based compound – Bimodal neutron/X-ray tomography study. Cement and Concrete Research, 140 (November 2020), 106289. doi.org/10.1016/j.cemconres.2020.106289
-Yildizel, S. A., Tayeh, B. A. & Uzun, M. (2022). The evaluation of calcium carbonate added and basalt fiber reinforced roller compacted high performance concrete for pavement. Case Studies in Construction Materials, 17(June), e01293. doi.org/10.1016/j.cscm.2022.e01293
-Zarei, A., Rooholamini, H. & Ozbakkaloglu, T. (2022). Evaluating the Properties of Concrete Pavements Containing Crumb Rubber and Recycled Steel Fibers Using Response Surface Methodology. International Journal of Pavement Research and Technology, 15(2), 470–484. doi.org/10.1007/s42947-021-00049-7
-Zhang, H. & Xiao, J. (2021). Plastic shrinkage and cracking of 3D printed mortar with recycled sand. Construction and Building Materials, 302(May), 124405.
doi.org/10.1016/j.conbuildmat.2021.124405
-Zhao, L., Feng, P., Shao, L., Ye, S. & Liu, X. (2021). Using viscosity modifying admixture to reduce diffusion in cement-based materials: Effect of molecular mass. Construction and Building Materials, 290, 123207.
-Ziari, H., Fazaeli, H., Vaziri Kang Olyaei, S. J. & Ziari, M. A. (2022). Evaluation of effects of temperature, relative humidity, and wind speed on practical characteristics of plastic shrinkage cracking distress in concrete pavement using a digital monitoring approach. International Journal of Pavement Research and Technology, 15(1), 138–158.
-Ziari, H., Sobhanifard, E., & Omidinasab, F. (2024). Evaluation of the effect of silica fume on the permeability characteristics of concrete pavements containing fibers. Journal of Transportation Research, 21(3), 345-362.