Analysis of Compressive Strength of Standard Poured Microsilica Added Reactive Powder Concrete

Öz

Reactive powder concretes (RPC) are new-generation concretes with superior properties that have been continuously developed since 1995. They are the most important concretes that are candidates to be the concrete of the future. In this study, reactive powder concretes were produced by using silica fume and micro silica instead of cement. 5x5x5 cm cube samples were used as samples, and these samples were produced in steel molds. Silica fume was used at 20%, 25%, and 30% rates. Microsilica was used instead of cement at 5%, 10%, and 15% rates. These produced samples were cured under autoclave conditions at 160⁰C 10 Atm for 4 hours, 175⁰C 15 Atm for 4 hours, 160⁰C 10 Atm for 8 hours, and 175⁰C 15 Atm for 8 hours. The cured samples were broken in an automatically controlled test press loaded at 90 kg/s, and the compressive strengths of these samples were measured. According to the compressive strength results, an increase in compressive strength was detected when the proportions of silica fume samples were increased from 20% to 25%. When the silica fume samples were increased from 25% to 30%, a minimal decrease in compressive strength occurred. When the compressive strengths of microsilica samples were increased from 5% to 10% and 15%, a decrease in compressive strength was observed. As a result, the compressive strengths of microsilica samples were generally found to be higher than those of silica fume samples.

Anahtar Kelimeler

• Reactive concretes
• Silica fume
• Micro silica
• Compressive strength

Kaynakça

1. Alaee FJ. 2020. Retrofitting of concrete structures using high performance fiber reinforced cementitious composite. PhD Thesis, University of Wales, Cardiff, UK, pp: 220.
2. Bajpai R, Choudhary K, Srivastava A, Sangwan KS, Singh M, 2020. Environmental impact assessment of fly ash and silica fume based geopolymer concrete. J Clean Prod, 254: 120-147.
3. Bayrak B. 2024. Trio/hybrid fiber effect on the geopolymer reinforced concrete for flexural and shear behavior. Struct Concrete, 1(1): 1-28.
4. Benemaran RS, Esmaeili-Falak M, Kordlar MS. 2024. Improvement of recycled aggregate concrete using glass fiber and silica fume. Multiscale Multidis Model Exp Des, 7(3): 1895-1914.
5. Cakir Ö, Sofyanli ÖÖ. 2015. Influence of silica fume on mechanical and physical properties of recycled aggregate concrete. HBRC J. 11(2): 157-166.
6. Carrasco Vasques DJ, Fernandez Herrera LH. 2019. Influencia del Nano-sílice en las propiedades de un concreto de F'c= 350 kg/cm2 para obtener un concreto de alta resistencia. Universidad Cesar Valejo. URL: https://hdl.handle.net/20.500.12692/52543 (accessed date: October 12, 2024).
7. Cengiz C. 2024. The Relationship between electricity consumption from outdoor lighting and economic growth. Light Eng, 32(4): 14-21
8. Cengiz Ç, Aydoğdu H. 2015. Gamma Renewal functions ın censored data. Bitlis Eren Univ J Sci Technol, 5(2): 97-101.

9. Cengiz Ç, Metin Karakaş A. 2015. Estimation of weibull renewal function for censored data. Int J Sci Tech Res, 1: 123-132.
10. Cengiz Ç. 2019. Nonparametric estimation of a renewal function in the case of censored sample. Bitlis Eren Univ J Sci Technol, 9(2): 54-57.
11. Cengiz MS, Cengiz C. 2018. Numerical analysis of tunnel lighting maintenance factor. Int Isl U Malay. IIUM Engin J, 19(2): 154-163.
12. Cengiz MS. 2023. Daylight analysis in terms of building direction and one-way roof. BSJ Eng Sci, 6(4): 535-539.
13. Cengiz MS. 2023. The angular use of light in architecture and the concept of space. BSJ Eng Sci, 6(4): 469-476.
14. Chithra S, Senthil Kumar SRR, Chinnaraju K. 2016. The effect of colloidal nano-silica on workability, mechanical and durability properties of high performance concrete with copper slag as partial fine aggregate. Constr Build Mater, 113: 794-804.
15. Ghafari E, Costa H, Júlio E, Portugal A, Durães L. 2014. The effect of nanosilica addition on flowability, strength and transport properties ultra high performance concrete. Mater Des, 59: 1-9.
16. İpek M, Yılmaz K. 2009. Sıkıştırma basıncının reaktif pudra betonunun eğilme dayanımına etkisi. 5. Uluslararası İleri Teknolojiler Sempozyumu, May 13-15, Karabük, Türkiye.
17. İpek M. 2009. Reaktif pudra betonların mekanik davranışına katılaşma süresince uygulanan sıkıştırma basıncının etkileri. PhD Thesis, Sakarya University, Institute of Science, Sakarya, Türkiye, pp: 182.
18. Jalal M, Mansouri E, Sharifipour M, Pouladkhan AR. 2012. Mechanical, rheological, durability and microstructural properties of high performance self-compacting concrete containing SiO2micro and nanoparticles. Mater Des, 34: 389-400.
19. Larrard F, Sedran T. 1994. Optimization of ultra-high-performance concrete by the use of a packing model. Cement Concrete Res, 24(6): 997-1009.
20. Onur S, Efe SB. 2020. Elektrikli bisikletle paylaşımlı hareketlilik: Balıkesir Üniversitesi Kampüsü örneği. Akıllı Ulaş Sist Uyg Derg, 3(2): 216-226.
21. Özer I, Efe SB, Özbay H. 2021. CNN/Bi-LSTM-based deep learning algorithm forclassification of power quality disturbances by using spectrogram images. Int Trans Electr Energ Syst, 31(12): 1-16.
22. Richard P, Cheyrezy MH. 1994. Reactive powder concretes with high ductility and 200-800 MPa compressive strength. Bouygues Int Rep, Paris, France, pp: 15.
23. Walraven J. 1999. Structural concrete. J Fib, 1(1): 3-11.
24. Yazıcı H, Yalçınkaya Ç. 2011. Yeni nesil yüksek performanslı beton: Reaktif pudra betonu. İMO İzmir Şubesi Bülten, 2011: 26-29.