نوع مقاله: مقاله عمران
نویسندگان
1 دانشکده مهندسی عمران، دانشکده فنی، دانشگاه تهران، تهران، ایران
2 دانشکدۀ مهندسی عمران، دانشگاه صنعتی شریف، تهران، ایران
3 دانشکدۀ مهندسی عمران، دانشگاه آزاد اسلامی واحد نجف آباد، ایران
چکیده
کلیدواژه‌ها
موضوعات
عنوان مقاله [English]
نویسندگان [English]
Evaluation of concrete strength is one of the important issues in the concrete industry and concrete structures. In most cases, during construction, samples of concrete are picked up and after curing, according to the existing standards, they are subjected to uniaxial compression and based on the applied force, the strength of the concrete is determined. Minimum strength of concrete can be predicted but in many cases, due to reasons such as lack of proper implementation, concrete strength in structure with design strength is different. Core drilling is one of the accepted in-situ tests for measuring the strength of concrete that is a destructive method. Providing a non-destructive method that can estimate the strength of concrete in a structure in many cases is a remedial. In this research, by providing concrete samples with different mix design, in addition to studying the effect of mixing ratios on concrete strength and ultrasound wave velocity, a relationship between concrete strength and ultrasonic wave velocity is presented. Also, a comprehensive relationship is presented to estimate the strength of concrete considering water to cement ratio and the ratio of fine aggregate to course aggregate.
کلیدواژه‌ها [English]
[1] International Atomic Energy Agency, T. C. S. No 10., "Ultrasonic Testing of Materials at Level 2.", 1999.
[2] H. Y. Qasrawi and I. A. Marie, "The use of USPV to anticipate failure in concrete under compression," Cement and Concrete Research, vol. 33, no. 12, pp. 2017-2021, 2003.
[3] سمیه خراسانی وفرهنگ هنرور، " مدل سازی تکنیک بازرسی فراصوتی زمان پرواز پراش (ToFD) با استفاده از روش اجزاء محدود"، نشریه مدل‌سازی در مهندسی، دوره 13، شماره 41، تابستان 1394، صفحه 13- 26.
[4] C. ASTM, "597," Standard test method for pulse velocity through concrete. Annual Book of ASTM Standards, vol. 4, 2000.
[5] A. Davis et al., "Nondestructive test methods for evaluation of concrete in structures," American Concrete Institute, ACI, vol. 228, 1998.
[6] B. Standard, "Testing concrete," Recommendations for the, 1881.
[7] علی خیرالدین و نازنین کاشیها، " بررسی رفتار سازه ای اتصال دال پس کشیده به ستون در معرض برش پانچ "، نشریه مدل‌سازی در مهندسی، دوره 8، شماره 23، زمستان 1389، صفحه 37- 59.
[8] محمد علی لطف اللهی یقین و مجتبی ضیائیون، " بررسی رفتار ستون‌های مرکب دو لایه تحت اثر متقابل نیروی محوری و لنگر خمشی"، نشریه مدل‌سازی در مهندسی، دوره 10، شماره 31، زمستان 1391، صفحه 15- 23.
[9] R. E. Philleo, "Comparison of results of three methods for determining young’s modulus of elasticity of concrete," in Journal Proceedings, 1955, vol. 51, no. 1, pp. 461-470.
[10] T. Gudra and B. Stawiski, "Non-destructive strength characterization of concrete using surface waves," Ndt & E International, vol. 33, no. 1, pp. 1-6, 2000.
[11] J. Krautkrämer and H. Krautkrämer, Ultrasonic testing of materials. Springer Science & Business Media, 2013.
[12] D. S. Lane, "Evaluation of concrete characteristics for rigid pavements," 1998.
[13] V. Malhotra and P. K. Mehta, "Concrete technology: past, present, and future: proceedings of V. Mohan Malhotra symposium," 1994: American Concrete Institute.
[14] V. M. Malhotra, "In situ/nondestructive testing of concrete," 1984: American Concrete Institute.
[15] V. M. Malhotra and N. J. Carino, CRC handbook on nondestructive testing of concrete. CRC press, 1991.
[16] J. Popovics, J. Achenbach, and W.-J. Song, "Application of new ultrasound and sound generation methods for testing concrete structures," Magazine of Concrete Research, vol. 51, no. 1, pp. 35-44, 1999.
[17] S. Popovics, "Analysis of the concrete strength versus ultrasonic pulse velocity relationship," Materials Evaluation, vol. 59, no. 2, pp. 123-130, 2001.
[18] S. Popovics, N. M. Bilgutay, M. Caraoguz, and T. Akgul, "High-frequency ultrasound technique for testing concrete," Materials Journal, vol. 97, no. 1, pp. 58-65, 2000.
[19] S. Popovics, J. L. Rose, and J. S. Popovics, "The behaviour of ultrasonic pulses in concrete," Cement and Concrete Research, vol. 20, no. 2, pp. 259-270, 1990.
[20] A. E. Ben-Zeitun, "Use of pulse velocity to predict compressive strength of concrete," International Journal of Cement Composites and Lightweight Concrete, vol. 8, no. 1, pp. 51-59, 1986.
[21] J. A. Bogas, M. G. Gomes, and A. Gomes, "Compressive strength evaluation of structural lightweight concrete by non-destructive ultrasonic pulse velocity method," Ultrasonics, vol. 53, no. 5, pp. 962-972, 2013.
[22] A. Jain, A. Kathuria, A. Kumar, Y. Verma, and K. Murari, "Combined use of non-destructive tests for assessment of strength of concrete in structure," Procedia Engineering, vol. 54, pp. 241-251, 2013.
[23] M. A. Musmar and N. A. Alhadi, "Relationship Between Ultrasonic Pulse Velocity and Standard Concrete Cube Crushing Strength."
[24] S. K. Rao, P. Sravana, and T. C. Rao, "Experimental studies in Ultrasonic Pulse Velocity of roller compacted concrete pavement containing fly ash and M-sand," International Journal of Pavement Research and Technology, vol. 9, no. 4, pp. 289-301, 2016.
[25] M. Shariq, J. Prasad, and A. Masood, "Studies in ultrasonic pulse velocity of concrete containing GGBFS," Construction and Building Materials, vol. 40, pp. 944-950, 2013.
[26] J. Pallant and S. S. Manual, "A step by step guide to data analysis using SPSS," Berkshire UK: McGraw-Hill Education, 2010.
)