EN
TR
INVESTIGATION OF THE FRACTURE BEHAVIOR OF GEOPOLYMER CONCRETE REINFORCED WITH RECYCLED STEEL AND GLASS FIBERS
Abstract
The brittleness of the geopolymer composites is an issue for its widespread use worldwide. Therefore, several types of fibers have been added to the geopolymer mixture to provide a ductile manner. In this work, the recycled steel fibers were employed in a hybrid form with glass fibers to take advantage of the low carbon emission in the production process of recycled steel fibers. The total fiber content was taken as constant 0.6% by volume. Five dissimilar geopolymer batches were handled and two concrete prisms were cast for each batch. Those prisms were tested under three-point loading and the deformed shapes of the specimens’ surface were captured by digital camera to generate the surface displacement field. The fracture characteristics of the notched prisms were criticized in terms of (i) load-CMOD response, (ii) crack progress ahead of the pre-notch, (iii) fracture energy, (iv) ultimate load-bearing capacity, and (v) unstable fracture toughness. Test results revealed that the residual strength, the ultimate load, and the fracture energy of fiber-reinforced geopolymers had a decreasing trend with the increasing recycled steel fiber ratio in the hybrid blend. The reasonable cause of that finding was the heterogeneous distribution of the recycled steel fibers.
Keywords
Kaynakça
- Aisheh, Y.I.A., Atrushi, D.S., Akeed, M.H., Qaidi, S., & Tayeh, B.A. (2022). Influence of steel fibers and microsilica on the mechanical properties of ultra-high-performance geopolymer concrete (UHP-GPC). Case Studies in Construction Materials, 17, e01245. https://doi.org/10.1016/j.cscm.2022.e01245
- Alsaif, A.S., & Abdulrahman S. Albidah, A. (2022). Compressive and flexural characteristics of geopolymer rubberized concrete reinforced with recycled tires steel fibers. Materials Today: Proceedings, International Conference on Advances in Construction Materials and Structures, 65, (pp. 1230–1236). https://doi.org/10.1016/j.matpr.2022.04.182
- Anvari, M., & Toufigh, V. (2022). Experimental and probabilistic investigation on the durability of geopolymer concrete confined with fiber reinforced polymer. Construction and Building Materials, 334, 127419. https://doi.org/10.1016/j.conbuildmat.2022.127419
- Başaran, B., Aksoylu, C., Özkılıç, Y.O., Karalar, M., & Hakamy, A., (2023). Shear behaviour of reinforced concrete beams utilizing waste marble powder. Structures, 54, 1090–1100. https://doi.org/10.1016/j.istruc.2023.05.093
- Blaber, J., Adair, B., & Antoniou, A. (2015). Ncorr: Open-Source 2D Digital Image Correlation Matlab Software. Experimental Mechanics, 55, 1105–1122. https://doi.org/10.1007/s11340-015-0009-1
- Çelik, A.İ., Tunç, U., Bahrami, A., Karalar, M., Othuman Mydin, M.A., Alomayri, T., & Özkılıç, Y.O., (2023). Use of waste glass powder toward more sustainable geopolymer concrete. Journal of Materials Research and Technology, 24, 8533–8546. https://doi.org/10.1016/j.jmrt.2023.05.094
- da Silva, A.C.R., Almeida, B.M., Lucas, M.M., Cândido, V.S., da Cruz, K.S.P., Oliveira, M.S., de Azevedo, A.R.G., & Monteiro, S.N. (2022). Fatigue behavior of steel fiber reinforced geopolymer concrete. Case Studies in Construction Materials, 16, e00829. https://doi.org/10.1016/j.cscm.2021.e00829
- Davidovits, J. (1991). Geopolymers. Journal of Thermal Analysis, 37, 1633–1656. https://doi.org/10.1007/BF01912193
Ayrıntılar
Birincil Dil
İngilizce
Konular
Kırılma Mekaniği , Yapı Malzemeleri
Bölüm
Araştırma Makalesi
Yayımlanma Tarihi
3 Haziran 2024
Gönderilme Tarihi
12 Ekim 2023
Kabul Tarihi
11 Kasım 2023
Yayımlandığı Sayı
Yıl 1970 Cilt: 27 Sayı: 2