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Sasania, Fariborz, Nematzadeh, Mahdi, Asadi, Maryam, Aminian, Arman. (1404). Thermo-Mechanical Behavior of High-Strength Concrete with Nylon Granule Aggregates: Experimental Evaluation and Predictive Analysis. پژوهشنامه مدیریت اجرایی, 1(1), 1-35. doi: 10.22080/ceas.2025.29200.1011
Fariborz Sasania; Mahdi Nematzadeh; Maryam Asadi; Arman Aminian. "Thermo-Mechanical Behavior of High-Strength Concrete with Nylon Granule Aggregates: Experimental Evaluation and Predictive Analysis". پژوهشنامه مدیریت اجرایی, 1, 1, 1404, 1-35. doi: 10.22080/ceas.2025.29200.1011
Sasania, Fariborz, Nematzadeh, Mahdi, Asadi, Maryam, Aminian, Arman. (1404). 'Thermo-Mechanical Behavior of High-Strength Concrete with Nylon Granule Aggregates: Experimental Evaluation and Predictive Analysis', پژوهشنامه مدیریت اجرایی, 1(1), pp. 1-35. doi: 10.22080/ceas.2025.29200.1011
Sasania, Fariborz, Nematzadeh, Mahdi, Asadi, Maryam, Aminian, Arman. Thermo-Mechanical Behavior of High-Strength Concrete with Nylon Granule Aggregates: Experimental Evaluation and Predictive Analysis. پژوهشنامه مدیریت اجرایی, 1404; 1(1): 1-35. doi: 10.22080/ceas.2025.29200.1011

Thermo-Mechanical Behavior of High-Strength Concrete with Nylon Granule Aggregates: Experimental Evaluation and Predictive Analysis

Civil Engineering and Applied Solutions
مقاله 1، دوره 1، شماره 1، شهریور 2025، صفحه 1-35    اصل مقاله (3.56 M)
نوع مقاله: Original Article
شناسه دیجیتال (DOI): 10.22080/ceas.2025.29200.1011
نویسندگان
Fariborz Sasania؛ Mahdi Nematzadeh* ؛ Maryam Asadi؛ Arman Aminian
Department of Civil Engineering, Faculty of Engineering and Technology, University of Mazandaran, Babolsar, Iran
تاریخ دریافت: 19 اردیبهشت 1404،  تاریخ بازنگری: 24 اردیبهشت 1404،  تاریخ پذیرش: 24 اردیبهشت 1404 
چکیده
In recent years, incorporating polymer trash as a substitute for natural aggregates in cementitious material has emerged as a sustainable approach to minimize environmental impact. Despite growing interest, limited studies have addressed the mechanical and microstructural performance of high-strength concrete (HSC) incorporating polymer waste under elevated temperature conditions. This research investigates the residual stress-strain response of HSC incorporating nylon granules (NG) as a partial substitute for natural sand at proportions of 0, 10, and 20%. Specimens were subjected to axial compressive loading after exposure to high temperatures of 20, 300, and 600°C. The analysis covered several physical and mechanical characteristics such as loss of weight, compressive strength, splitting tensile strength, elastic modulus, strain at peak stress, ultimate strain, toughness, stress-strain model, visual changes, and microstructure. The experimental findings were benchmarked against established codes and standards, including ACI 216, ASCE, EN 1994-1-2, EN 1992-1-2, and CEB-FIP. Results demonstrated that higher temperatures substantially impaired concrete performance, with compressive strength and modulus of elasticity declining by approximately 59% and 75%, respectively, at 600°C. Furthermore, the inclusion of NG led to additional reductions in mechanical performance. Based on the experimental observations, predictive models were formulated for mechanical properties, and a stress-strain model for NG-modified concrete was developed, which correlated well with the experimental results.
کلیدواژه‌ها
High-strength concrete؛ Recycled nylon granules؛ Elevated temperatures؛ Mechanical properties؛ Microstructure؛ Compressive stress-strain behavior
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