بهینه‌سازی نفوذپذیری و دوام بتن معمولی با استفاده از نانوذرات اکسید سیلیس

نوع مقاله : مقاله پژوهشی

نویسنده

گروه عمران، دانشکده فنی و مهندسی، دانشگاه آزاد اسلامی، واحد شبستر، شبستر، ایران

10.22124/jcr.2026.32397.1728

چکیده

دوام سازه‌های بتنی یکی از عوامل اساسی در تعیین عمر مفید آن‌هاست، به‌ویژه هنگامی که بتن در معرض محیط‌های مهاجم قرار می‌گیرد. هدف این پژوهش، بررسی تأثیر نانوذرات اکسید سیلیس (SiO₂) بر بهبود دوام و کاهش نفوذپذیری بتن است. در این تحقیق، نانوذرات سیلیس با درصدهای مختلف جایگزین بخشی از سیمان در طرح اختلاط بتن شده و نمونه‌ها از نظر نفوذپذیری، تخلخل و مقاومت در برابر حملات سولفاتی مورد آزمایش قرار گرفتند. نتایج نشان داد استفاده از نانوذرات، در صورت پراکندگی مناسب، موجب افزایش همگنی و انسجام بتن، کاهش نفوذپذیری و تخلخل، و بهبود چسبندگی خمیر سیمان می‌شود. واکنش پوزولانی نانوذرات با هیدروکسید کلسیم سبب تشکیل ژل‌های مقاوم‌تر و کاهش مسیرهای نفوذ عوامل مخرب گردیده است. همچنین بتن حاوی نانوذرات از مقاومت بالاتری در برابر حملات سولفاتی برخوردار بوده و دوام آن در بلندمدت افزایش یافته است. به‌طور کلی، افزودن نانوذرات اکسید سیلیس را می‌توان راهکاری کارآمد برای ارتقای دوام و پایداری بتن در شرایط محیطی مهاجم دانست.

کلیدواژه‌ها

موضوعات

عنوان مقاله [English]

Optimization of Permeability and Durability of Normal Concrete Using Silicon Dioxide Nanoparticles

نویسنده [English]

  • farhad pirmohammadi alishah
Department of Civil Engineering, Faculty of Engineering, Islamic Azad University, Shabestar Branch, Shabestar, Iran
چکیده [English]

The durability of concrete structures is a decisive factor in their service life, especially when exposed to aggressive environments. This study aims to investigate the effects of silica oxide nanoparticles (SiO₂) on improving the durability and reducing the permeability of concrete. In this research, SiO₂ nanoparticles were used as partial replacements for cement in various mix designs, and the prepared samples were tested for permeability, porosity, and resistance to sulfate attack. The results revealed that the incorporation of well-dispersed nanoparticles enhances the homogeneity and cohesion of concrete, significantly reduces permeability and pore volume, and improves the viscosity and bonding properties of the cement paste. The pozzolanic reaction between nanoparticles and calcium hydroxide leads to the formation of more durable gels, which block the pathways of harmful agents. Furthermore, concretes containing silica nanoparticles exhibited higher resistance to sulfate attack and improved long-term durability. Overall, the incorporation of silica oxide nanoparticles can be considered an effective approach to enhance concrete durability and stability in harsh environmental conditions.

کلیدواژه‌ها [English]

  • Concrete
  • Metal Oxide Nanoparticles
  • Compressive Strength
  • Permeability
  • Microstructure

مراجع

[1] Feynman R. There’s Plenty of Room at the Bottom. Lecture presented at the American Physical Society meeting, California Institute of Technology (Caltech), United States; 1959. Published in Engineering and Science. 1959;23(5):22–36.
[2] Taniguchi N. On the Basic Concept of “Nanotechnology.” In: Proceedings of the International Conference on Production Engineering, Tokyo, Japan. Japan Society of Precision Engineering; 1974. p. 18–23. [3] Drexler KE. Engines of Creation: The Coming Era of Nanotechnology. Anchor Books; 1986.
[4] Kroto HW, Curl RF, Smalley RE, O’Brien SC, et al. C60: Entropy in Disorderly Molecular Systems. Nature. 1985;318(6042):162–163.
[5] Kroto HW, Curl RF, Smalley RE, O’Brien SC, et al. C60: Entropy in Disorderly Molecular Systems. Nature. 1985;318(6042):162–163.
[6] Nazeri A, Riahi S. Al2O3 Nanoparticles in concrete and different curing media. Energy Build. 2011;Pages 1480–1488.
[7] Sanchez F, Sobolev K. Nanotechnology in Concrete—A Review. Constr Build Mater. 2010;24:2060–2071.
[8] Hosseini P, Afshar A, Vafaei B, Booshehrian A, Molaei Raisi E, Esrafili A. Effects of nano-clay particles on the short-term properties of self-compacting concrete. Eur J Environ Civil Eng. 2015;1–21.
[9] ASTM C150-00, Standard Specification for Portland Cement. West Conshohocken, PA: ASTM International.
[10] ACI 211.1-82, Standard Practice for Selecting Proportions for Normal, Heavyweight, and Mass Concrete. Detroit, USA: American Concrete Institute.
[11] ASTM C1202, Electrical Indication of Concrete’s Ability to Resist Chloride Ion Penetration. West Conshohocken, PA: ASTM International.
[12] ASTM C496 / C496M-17, Standard Test Method for Splitting Tensile Strength of Cylindrical Concrete Specimens. West Conshohocken, PA: ASTM International; 2017.
[13] Gambhir ML. Concrete technology. 3rd ed. New Delhi: Tata McGraw-Hill; 1986.
[14] Ramezanianpour AA, Tahooni Sh, Peydaish M. Handbook of Concrete Construction (Dastnameh Ejraye Beton). Tehran: University of Tehran Press; 2002 First Edition.
[15] Pirmoghaddami F. Investigation of the Effect of Shape, Composition, and Type of Minerals Constituting Aggregates on the Compressive Strength of Concrete [Barris-e Ta’sir Shekl, Tarkib va No’ Kaniha-ye Tashkil Dahandeh Sangdaneha bar Moqavemat Feshari Beton] [Master’s thesis in Civil Engineering – Structures]. Shabestar Islamic Azad University; 2019/2020.
[16] Rittenhouse G, A, visual method of estimating 2-dimensional sphericity. Journal of Sedimentary Petrolology. 13(2):7981.1943, 2006.
[17] Wadell H. Volume, shape and roundness of rock particles. J Geol. 1932;40:443–51.
[18] British Standard Institution. BS 812-105.1:(BS EN 933-4), Methods for determination of particle shape. Flakiness index. London: BSI; 2008.
[19] ISRM, in: E.T. Brown (Ed.), Rock
Characterization Testing and Monitoring-ISRM Suggested Methods, Pergamon, Oxford, 211 pp, 1981.
[20] British Standard Institution. BS 3148:(BS EN-1008), Mixing Water for Concrete-Specification for Sampling, Testing and Assessing the Suitability of Water. London: BSI; 2002.
[21] ASTM C143 / C143M-12, Standard Test Method for Slump of Hydraulic-Cement Concrete. Vol 4.08. Philadelphia, PA: ASTM; 1990.
[22] ASTM C39 / C39M-21, Standard Test Method for Compressive Strength of Cylindrical Concrete Specimens. West Conshohocken, PA: ASTM International; 2021.
[23] ASTM C39 / C39M-21, Standard Test Method for Compressive Strength of Cylindrical Concrete Specimens. West Conshohocken, PA: ASTM International; 2021.
[24] Hakamy A, Shaikh F, Low I. Characteristics of nanoclay and calcined nanoclay-cement nanocomposites. Compos Part B Eng. 2015;78:174–184. [25] Mansourghanaei MH, Beik Larian M, Mardoohpour A. Investigation of Permeability, Capillary Water Absorption, and Mass Loss in Geopolymer Concrete Containing Blast Furnace Slag, Nano-silica, and Polyolefin Fibers. Iran J Concr Res. 2024;16(2):97–110. DOI: 10.22124/jcr.2023.21447.1547
[26] Sajedi SF, Heidari E. Investigation and Comparison of the Effect of Micro-silica and Nano-silica on the Rheological and Mechanical Properties of Concrete. Iran J Concr Res. 2025;17(3):113–133. DOI: 10.22124/jcr.2024.21928.1567.
[27] Ghorbani A. Investigation of the Simultaneous Effect of Micro-silica and Nano-silica on Concrete Properties. Iran J Concr Res. 2025. DOI: 10.22124/jcr.2021.17786.1456
[28] Nasehi Goshuye M, Amiri M, Malekinejad M. Investigating the Effect of Using Nano-silica on the Mechanical Properties of Sand-Cement Mortar under the Influence of Heat with an Attitude Towards Changes in Cement Nanostructures. Iran J Concr Res. 2023;16(1):57–72. doi: 10.22124/jcr.2023.22616.159.
[29] A. Khaloo, M.H. Mobini, P. Hosseini, Influence of different types of nano-SiO2 particles on properties of high-performance concrete, Construction and Building Materials 113 (2016) 188-201.
[30] B.B. Mukharjee, S.V. Barai, Influence of nanosilica on the properties of recycled aggregate concrete, Construction and Building Materials 55 (2014) 29-37.

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