Сравнительное исследование полимера, армированного стекловолокном, и полимера, армированного углеродным волокном, на кубе и цилиндре

В лабораториях Багдада проведен сравнительный анализ полимеров, армированных стекловолокном, с полимерами, армированными углеродным волокном, на кубе и цилиндре. Было отобрано 36 образцов с процентным содержанием волокна 1,0, 2,5 и 5,0 % от массы цемента. Методика данного исследования включала использование композиционных полимерных волокон во внешнем армировании бетонных балок для повышения прочности при изгибе при наклеивании полимерных волокон на поверхность. Выполнены испытания группы А неармированных бетонных балок с другими полимерными волокнами. Отличные результаты получены при добавлении двух типов полимерных волокон в бетон. Установлено, что полимер, армированный стекловолокном, имеет более высокие результаты, чем полимер, армированный углеродным волокном, при испытании образцов на прочность при изгибе. Однако прочность на раскалывание армированного углеродным волокном полимера достигла более высоких показателей, чем, армированного стекловолокном. Результаты группы предыдущих исследований, проведенных с целью изучения  влияния добавок фибры на механические свойства бетона, показали, что их добавка приводила к повышению сопротивления сжатию, растяжению и изгибу при скоростях, достигавших 25, 75 и 80 % соответственно.

1. American Concrete Institute (1996) State-of-the-Art Report on Fiber-Reinforced Plastic Reinforcement for Concrete Structures. ACI 440R-96. Farmington Hills, Mich. 65.

2. Saadatmanesh H., Ehsani M. R. (1991) RC Beams Strengthened with GFRP Plates. Parts I, II. Journal of Structural Engineering, 117 (11), 3417-3455. https://doi.org/10.1061/(asce)0733-9445(1991)117:11(3434).

3. Alfarabi S., Al-Sulaimani G., Basunbul I., Baluch M., Ghaleb B. (1994) Strengthening of Initially Loaded Reinforced Concrete Beams Using FRP Plates. ACI Structural Journal, 91 (2), 160-169. https://doi.org/10.14359/4594.

4. Al-Sulaimani G. J., Sharif A. M., Basunbul I. A., Baluch M. H., Ghaleb B. N. (1994) Shear Repair for Reinforced Concrete by Fiberglass Plate Bonding. ACI Structural Journal, 91 (4), 458-464. https://doi.org/10.14359/4153.

5. Malek A. M., Saadatmanesh H., Ehsani M. (1998) Prediction of Failure Load of Reinforced Concrete Beams Strengthened with FRP Plate Due to Stress Concentration at Plate Ends. ACI Structural Journal, 95 (2), 142-152. https://doi.org/10.14359/534.

6. He J. H., Pilakoutas K., Waldron P. (1997) Strengthening of Reinforced Concrete Beams with CFRP Plates. Proceedings of the Third International Symposium on Nonmetallic (FRP) Reinforcement for Concrete Structures. Sapporo, 343-350.

7. Takahashi Y., Sato Y., Ueda T., Maeda T., Kobayashi A. (1997) Flexural Behavior of RC Beams with Externally Bonded Carbon Fiber Sheet. Proceedings of the Third International Symposium on Nonmetallic (FRP) Reinforcement for Concrete Structures. Sapporo, 327-334.

8. Swamy N., Mukhopadhyaya P., Lynsdale C. (1997) Ductility Consideration in Using GFRP Sheets to Strengthen and Upgrade Structures. Proceedings of the Third International Symposium on Nonmetallic (FRP) Reinforcement for Concrete Structures. Sapporo, 637-644.

9. Grace N. F., Soliman A. K., Sayed G. A., Saleh K. R. (1998) Behavior and Ductility of Simple and Continuous Beams Reinforced with FRP Bars and Stirrups. Journal of Composites for Construction, 2 (4), 186-194. https://doi.org/10.1061/(asce)1090-0268(1998)2:4(186).

10. Bentur A., Mindess S. (1990) Fibre Reinforced Cementitious Composites. London, Elsevier Applied Science. https://doi.org/10.4324/9781482298512.

11. Vairagade V., Kene K. (2012) Experimental Investigation on Hybrid Fiber Reinforced Concrete. International Journal of Engineering Research and Applications, 2 (3), 1037-1041.

12. Soutsos M. N., Le T. T., Lampropoulos A. P. (2012) Flexural Performance of Fibre Reinforced Concrete Made with Steel and Synthetic Fibres. Construction and Building Materials, 36, 704-710. https://doi.org/10.1016/j.conbuildmat.2012.06.042.

13. Abdalkader A., Elzaroug O., Abubaker F. (2017) Flexural Cracking Behavior of Steel Fiber Reinforced Concrete Beams. International Journal of Scientific & Technology Research, 6 (8), 273-277.

14. Balaguru P. N., Shah S. P. (1992) Fiber Reinforced Cement Composites. McGraw-Hill Inc.

15. Meda A., Minelli F., Plizzari G. A. (2012) Flexural Behaviour of RC Beams in Fibre Reinforced Concrete. Composites Part B: Engineering, 43 (8), 2930-2937. https://doi.org/10.1016/j.compositesb.2012.06.003.

16. Kang T., Kim W., Massone L. M., Galleguillos T. A. (2012) Shear-Flexure Coupling Behavior of Steel Fiber-Reinforced Concrete Beams. ACI Structural Journal, 109 (4), 435-444. https://doi.org/10.14359/51683863.

17. Altun F., Haktanir T., Ari K. (2007) Effects of Steel Fiber Addition on Mechanical Properties of Concrete and RC Beams. Construction and Building Materials, 21 (3), 654-661. https://doi.org/10.1016/j.conbuildmat.2005.12.006.

18. Shende A., Pande A. (2011) Comparative Study on Steel Fiber Reinforced Cum Control Concrete. International Journal of Advanced Engineering Sciences and Technologies, 6 (1), 116-120.

19. Lok T. S., Xiao J. R. (1999) Flexural Strength Assessment of Steel Fiber Reinforced Concrete. Journal of Materials in Civil Engineering, 11 (3), 188-196. https://doi.org/10.1061/(asce)0899-1561(1999)11:3(188).

20. Abbas A., Mohsin S. S., Cotsovos D. (2010) Numerical Modelling of Fibre-Reinforced Concrete. Proceedings of the International Conference on Computing in Civil and Building Engineering ICCCBE. 473.

21. Omrani E., Menezes P. L., Rohatgi P. K. (2016) State of the Art on Tribological Behavior of Polymer Matrix Composites Reinforced with Natural Fibers in the Green Materials World. Engineering Science and Technology, an International Journal, 19 (2), 717-736. https://doi.org/10.1016/j.jestch.2015.10.007.

22. Byung H. O. (1992) Flexural Analysis of Reinforced Concrete Beams Containing Steel Fibers. Journal of Structural Engineering, ASCE, 118 (10), 2821-2836. https://doi.org/10.1061/(asce)0733-9445(1992)118:10(2821).

23. Barros J., Figueiras J. (1999) Flexural Behavior of SFRC: Testing and Modeling. Journal of Materials in Civil Engineering, 11 (4), 331-339. https://doi.org/10.1061/(asce)0899-1561(1999)11:4(331).

24. Chen S. (2004) Strength of Steel Fiber Reinforced Concrete Ground Slabs. Proceedings of the Institution of Civil Engineers - Structures and Buildings, 157 (2), 157-163. https://doi.org/10.1680/stbu.2004.157.2.157.

25. Dwarakanath H., Nagaraj T. (1992) Comparative Study of Predictions of Flexural Strength of Steel Fiber Concrete. ACI Materials Journal, 88 (6), 714-720. https://doi.org/10.14359/1262.

26. Rtayli N., Enneya N. (2020) Enhanced Credit Card Fraud Detection Based on SVM-Recursive Feature Elimination and Hyper-Parameters Optimization. Journal of Information Security and Applications, 55, 102596. https://doi.org/ 10.1016/j.jisa.2020.102596.

27. Wang C., Pan Y., Chen J., Ouyang Y., Rao J., Jiang Q. (2020) Indicator Element Selection and Geochemical Anomaly Mapping Using Recursive Feature Elimination and Random Forest Methods in the Jingdezhen Region of Jiangxi Province, South China. Applied Geochemistry, 122, 104760. https://doi.org/10.1016/j.apgeochem.2020.104760.

28. Lepoivre A., Boyard N., Levy A., Sobotka V. (2020) Heat Transfer and Adhesion Study for the FFF Additive Manufacturing Process. Procedia Manufacturing, 47, 948-955. https://doi.org/10.1016/j.promfg.2020.04.291.