Süper Emici Polimer Katkılı Harçların Isıl İşlem ile Hava Küründe Mekanik Özellikleri

Yıl 2023, Cilt: 6 Sayı: 1, 45 - 50, 25.06.2023

Hasan Dilbas , Furkan Birdal

https://doi.org/10.51764/smutgd.1217163

Öz

Günümüzde süper emici polimerlerin kullanım alanları gittikçe yaygınlaşmaktadır. Bu polimerlerin beton karışımı içerisindeki davranışları ve betonun mekanik özellikleri üzerindeki etkisi araştırılmaktadır. Bununla birlikte, süper emici polimerlerin harç ve çimento pastası fazları üzerindeki etkileri de önemli bir araştırma konusudur. Bu makale kapsamında, süper emici polimer katkılı harçların farklı kür şartları altındaki mekanik davranışları deneysel olarak incelenmiştir. Deneylerde, 18 adet süper emici polimer katkılı ve 3 adet katkısız harç fazında 15x15x15 cm boyutlu küp numuneler üretilmiştir. Süper emici polimer katkılı harçlarda, polimer katkı oranı literatürden optimum %0,3 olarak belirlenmiştir. Deney numuneleri süper emici polimer katkılı, ısıl işlem uygulanmadan 3-5-10 gün hava küründe ve 1 gün ısıl işlem uygulaması ardından 2-4-9 gün hava kürü koşullarına göre sınıflandırılmıştır. Her bir deney numunesi için eksenel basınç dayanımı testi gerçekleştirilmiştir. Deneysel sonuçlardan, numunelerin gerilme-şekil değiştirme eğrileri elde edilmiştir. Bu eğrilerin karşılaştırılması neticesinde, süper emici polimer katkılı harçların mekanik performansında (eksenel basınç dayanımı, elastisite modülü ve enerji tüketme kapasitesi) en efektif ısıl işlem ve hava kürü kombinasyonu belirlenmiştir. Çalışmamız ile, süper emici polimer katkılı beton, bu betondan üretilmiş yapı taşıyıcı sistem elemanı (kolon, kiriş, perde, döşeme, vb.) davranışları ve süper emici polimer katkılı betonun teorik olarak modellenmesi bilimsel araştırmalarına katkı sunulması hedeflenmiştir.

Anahtar Kelimeler

Süper emici polimer, kür koşulları, ısıl işlem, süper emici polimer katkılı beton

Mechanical Properties of Super Absorbent Polymer Added Mortars in Heat Treatment and Air Curing

Öz

The areas of use of superabsorbent polymers are rapidly expanding. The behavior of these polymers in the concrete mix and their effect on the mechanical properties of the concrete are investigated. However, the effects of superabsorbent polymers on mortar and cement paste phases are also an important research topic. In this article, the mechanical behavior of superabsorbent polymer-added mortars under different curing conditions has been experimentally investigated. In the experiments, 15x15x15 cm cubic 18 samples with super absorbent polymer and 3 samples as reference were produced. In the superabsorbent polymer-added mortars, the polymer additive ratio was determined as 0.3% in the literature. The test samples were classified according to the conditions of air curing for 3-5-10 days without heat treatment, with super-absorbent polymer additives and 2-4-9 days after 1 day of heat treatment. An axial compressive strength test was performed for each test sample. Stress-strain curves of the samples were obtained from the experimental results. As a result of the comparison of these curves, the most effective combination of heat treatment and air curing was determined in the mechanical performance (axial compressive strength, modulus of elasticity and energy consumption capacity) of the superabsorbent polymer added mortars. With our study, it is aimed to contribute to the scientific research of superabsorbent polymer added concrete, the behavior of the structural load bearing system element (column, beam, shear wall, slab, etc.) produced from this concrete, and the theoretical modeling of superabsorbent polymer added concrete.

Anahtar Kelimeler

Super absorbent polymer, curing conditions, heat treatment, super absorbent polymer concrete

Kaynakça

• Bravo, M., de Brito, J., Evangelista, L., & Pacheco, J. (2017). Superplasticizer’s efficiency on the mechanical properties of recycled aggregates concrete: Influence of recycled aggregates composition and incorporation ratio. Construction and Building Materials, 153, 129–138. Retrieved from https://doi.org/10.1016/j.conbuildmat.2017.07.103
• Du, S. (2018). Effect of curing conditions on properties of cement asphalt emulsion mixture. Construction and Building Materials, 164, 84–93. Retrieved from https://doi.org/10.1016/j.conbuildmat.2017.12.179
• Erdoğan, T. (2007). Beton (in Turkish) (2nd ed.). Ankara Turkey: METU Press.
• Igarashi, S. (2006). Experimental study on prevention of autogenous deformation by internal curing using super-absorbent polymer particles. In International RILEM Conference on Volume Changes of Hardening Concrete: Testing and Mitigation (pp. 77–86). RILEM Publications. Retrieved from https://doi.org/10.1617/2351580052.009
• Jensen, O. M. (2013). Use of Superabsorbent Polymers in Concrete. Concrete International, January 2013, 48–52.
• Liu, B., Luo, G., & Xie, Y. (2018). Effect of curing conditions on the permeability of concrete with high volume mineral admixtures. Construction and Building Materials, 167, 359–371. Retrieved from https://doi.org/10.1016/j.conbuildmat.2018.01.190
• Liu, Y., Wang, L., Cao, K., & Sun, L. (2021). Review on the Durability of Polypropylene Fibre-Reinforced Concrete. Advances in Civil Engineering, 2021, 1–13. Retrieved from https://doi.org/10.1155/2021/6652077
• Mechtcherine, V., & Reinhardt, H.-W. (Eds.). (2012a). Application of Super Absorbent Polymers (SAP) in Concrete Construction. Dordrecht: Springer Netherlands. Retrieved from https://doi.org/10.1007/978-94-007-2733-5
• Mechtcherine, V., & Reinhardt, H.-W. (Eds.). (2012b). Application of Super Absorbent Polymers (SAP) in Concrete Construction. Dordrecht: Springer Netherlands. Retrieved from https://doi.org/10.1007/978-94-007-2733-5
• Mechtcherine, V., Wyrzykowski, M., Schröfl, C., Snoeck, D., Lura, P., de Belie, N., … Igarashi, S.-I. (2021a). Application of super absorbent polymers (SAP) in concrete construction—update of RILEM state-of-the-art report. Materials and Structures, 54(2), 80. Retrieved from https://doi.org/10.1617/s11527-021-01668-z
• Mechtcherine, V., Wyrzykowski, M., Schröfl, C., Snoeck, D., Lura, P., de Belie, N., … Igarashi, S.-I. (2021b). Application of super absorbent polymers (SAP) in concrete construction—update of RILEM state-of-the-art report. Materials and Structures, 54(2), 80. Retrieved from https://doi.org/10.1617/s11527-021-01668-z
• Mehta, P. K., & Monteiro, P. J. M. (2006). Concrete: Microstructure, Properties and Materails (Third Edit). New York: The McGraw-Hill. Retrieved from https://doi.org/10.1036/0071462889
• Pang, X., Sun, L., Sun, F., Zhang, G., Guo, S., & Bu, Y. (2021). Cement hydration kinetics study in the temperature range from 15 °C to 95 °C. Cement and Concrete Research, 148, 106552. Retrieved from https://doi.org/10.1016/j.cemconres.2021.106552
• Sajedi, F., & Razak, H. A. (2011). Effects of curing regimes and cement fineness on the compressive strength of ordinary Portland cement mortars. Construction and Building Materials, 25(4), 2036–2045. Retrieved from https://doi.org/10.1016/j.conbuildmat.2010.11.043
• Shen, D., Li, C., Kang, J., Liu, K., Liu, C., & Li, M. (2022). Influence of Loading Ages on the Early Age Tensile Creep of High-Strength Concrete Modified with Superabsorbent Polymers. Journal of Materials in Civil Engineering, 34(5). Retrieved from https://doi.org/10.1061/(ASCE)MT.1943-5533.0004207
• Shihada, S. (2011). EFFECT OF POLYPROPYLENE FIBERS ON CONCRETE FIRE RESISTANCE / POLIPROPIRENO PLUOŠTOĮ TAKA BETONO ATSPARUMUI UGNIAI. Journal of Civil Engineering and Management, 17(2), 259–264. Retrieved from https://doi.org/10.3846/13923730.2011.574454
• Wong, H. S. (2018). Concrete with superabsorbent polymer. In Eco-Efficient Repair and Rehabilitation of Concrete Infrastructures (pp. 467–499). Elsevier. Retrieved from https://doi.org/10.1016/B978-0-08-102181-1.00017-4
• Zhang, S., Lu, Z., Li, Y., Ang, Y., & Zhang, K. (2021). A Method for Internal Curing Water Calculation of Concrete with Super Absorbent Polymer. Advances in Civil Engineering, 2021, 1–14. Retrieved from https://doi.org/10.1155/2021/6645976