Cenk KARAKURT, Ahmet Ozan ÇELİK, Volkan KİRİÇÇİ, Ethem ÖZYAŞAR, Cem YILMAZER

KENDİLİĞİNDEN YERLEŞEN BETON DAVRANIŞININ HESAPLAMALI AKIŞKANLAR DİNAMİĞİ İLE BENZETİMİ

Temel olarak Newtonyen olmayan akışkan akışı Bingham tipi model ile açıklanmaktadır. Bu yöntemle Deeb vd., lifsiz KYB akışı sırasında Lagrange yaklaşımı temeline dayanan, sayısal ağ gerektirmeyen bir nümerik yöntem olan yumuşatılmış parçacık hidrodinamiği (Smoothed Particle Hydrodynamics) metodunu kullanarak üç boyutlu benzetim agregaların (8 mm ve daha büyük) dağılımı üzerine odaklanmışlardır [10]

Anahtar Kelimeler:

Kendiliğinden yerleşen beton, İşlenebilirlik, Bingham akışkanı, Parçacık taşınım modeli, Hesaplamalı akışkanlar dinamiği

SIMULATING THE BEHAVIOUR OF SELF COMPACTING CONCRETE WITH COMPUTITIONAL FLUID DYNAMICS

Self-compacting concrete (SCC) is one of the latest generation special types of concrete that has been achieved through the development of concrete technologies to reduce water chemical additives. This work has aimed at numerically modeling the flow behavior of various design mixtures of fresh SCC features of which were obtained experimentally. Modeling was done for homogeneous fluid assumption of SCC in V-funnel, Lbox and using the data obtained from the rheometer test fluid dynamics. The validated Computational Fluid Dynamics (CFD) model obtained in this fashion will enable monitoring flow behavior due to geometry, otherwise not possible to be detected through standard laboratory tests

Keywords:

Self compacting concrete, Workability, Bingham fluid, Particle tracking model, Computational fluid dynamics,

PDF

___

Baradan, B., Felekoğlu, B. 2004. Kendiliğinden
Betonların Mekanik Özellikleri. Beton 2004 Kongresi, İzmir, 234-243.
Yerleşen [2] Şahmaran, M., Yaman, İ.Ö. and Tokyay, M. 2009. Transport and Mechanical Properties of Self Consolidating Concrete with High Volume Fly Ash. Cement and Concrete Composites, 31, 99-106. [3] Corradi, M., Khurana,
R., Magarotto, R. and Torresan, I. 2002. Zero Energy System: An Innovative
Rationalized Precast Concrete Production.
International Congress of the Precast Istanbul, Turkey. for BIBM
th Industry, Silis Dumanı ve Uçucu Kül Katkılı Kendiliğinden
Betonların Taze Beton Özellikleri ve Basınç Dayanımları. DEÜ Mühendislik
Mühendislik Bilimleri Dergisi, 15, 31-44.
Yerleşen Fakültesi [5] Skarendahl, A. and Petersson, O. 2000. Self Compacting Concrete. State-of the- art Report of RILEM Technical Committee 174 – SCC, RILEM Publications, Chachan, Cedex, France, 17-22.
EFNARC, 2005. Specifications Guidelines and
Compacting Concrete. (2005).
Self [7] Qi, B.H., Fu, Z.J., Yan, S. and Liu, F.X., 2012. Numerical Simulation on Concrete Pouring Process of Self-Compacting Concrete-Filled Steel Tube. 15 WCEE, Lisboa, 1- 8.
Kulasegaram, S., Karihaloo, B. L. and Ghanbari A. 2011. Modelling the Flow of Self-Compacting Concrete. International Journal for Numerical and Analytical Methods in Ggeomechanics, 35, 713-723.
Georgiadis A.S., Fytanidis D.K., Anagnostopoulos N.S., 2010. Simulating
Concrete Fluidity Tests Using Computational Fluid Dynamics Techniques: Approaches and Challenges. 4th International Conference
Computing to Computational Engineering, Athens, Greece, 1-8. [10] Deeb, R., Kulasegaram, S. and Karihaloo,
Modelling of the Flow of Self- Compacting Concrete with or without Steel Fibres Part I: Slump Flow Test, Part II: L-Box Test and The Assessment Of Fibre Reorientation During the Flow. Computitional Particle Mechanics, 1 (4), 373-408.
Kurokawa, Y., Tanigawa, Y., Mori, H., and Nishinosono, Y.: Analytical Study on Effect of Volume Fraction of Coarse Agregate
Constants of Fresh Concrete, Trans. of the Japan Concrete Institute, Vol. 18, 1996, 37-44
Thrane, L.N., Szabo, P., Geiker, M., Glavind, M., Stang, H.: Simulation of the test Mehtod “L- Box”
Concrete, Annual Trans. of the Nordic Rheology Society, vol. 12, 2004, Reykjavik, Iceland, 47-54
Gram, A. and Silfwerbrand, J. 2011. Numerical Simulation of Fresh SCC Flow: Applications. Materials and Structures, 44, 805-813.
Gram, A. 2009. Numerical Modelling of Self-Compacting Concrete Flow - Discrete and Continuous Approach. “Royal Institute of Technology (KTH), Department Architectural
Division of Structural Design and Bridges, TRITA-BKN. Bulletin 99,Stockholm, (99),1103-4270.
and Sweden, [15] TS 706 EN 12620. 2003. Beton Agregaları. Türk Standartları Enstitüsü, Ankara.
TS EN 12350-9. 2011. Beton- Taze Beton Deneyleri-Bölüm 9: Kendiliğinden Yerleşen Beton- Çökme-V Hunisi Deneyi. Türk Standartları Enstitüsü, Ankara.
TS EN 12350-10. 2011. Beton- Taze Beton Deneyleri-Bölüm 10: Kendiliğinden Yerleşen Beton-L Kutusu Deneyi. Türk Standartları Enstitüsü, Ankara.
Aggarwal, P., Siddique, R., Aggarwal, Y. and Gupta, S.M. 2008. Self Compacting Concrete- Procedure for Mix Design”, Leonardo Electronic Journal of Practices and Technologies, 12, 15-24.
Zeng, S., Shi, J. and Guo, W. 2015. Back Analysis of Self- Compacting
Rheological Parameters Based on H-B Model. International Conference on Architectural, Civil Engineering, Guangzhou, China, 183-188. Concrete