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Abstract: This paper presents the technological relevance of a concurrent algorithm-based discrete element modelling (DEM) system, HADES. This new system is the successor of SPACE that is limited to spherical grains only. It can realistically simulate the packing of arbitrary-shaped particles up to the fully compacted state. Generation of families of such particles, i.e., generally representing aggregate of fluvial origin and crushed rock, respectively, and the forming way of particulate structure are described. Similarly shaped particles are proposed for simulation of cement paste because of conformity with experimental results obtained by the X-ray tomography method. Technologically relevant territories inside and outside concrete technology are presently explored in this efficient, reliable, and economic way. Some results obtained by this DEM approach are presented.

[1]Ansell, G.C., Dickinson, E., 1986. Sediment formation by Brownian dynamics simulation: effect of colloidal and hydrodynamic interaction on the sediment structure. Journal of Chemical Physics, 85(7):4079-4086.

[2]Ballani, F., 2005. A Case Study: Modeling of Self-Flowing Castables Based on Reconstructed 3D Images. 9th Euro Congress of Stereology and Image Analysis, Krakow, Poland, Polish Society of Stereology. Warsaw, Poland, p.282-288.

[3]Bentz, D.P., Garboczi, E.J., Stutzman, P.E., 1993. Computer Modeling of the Interfacial Transition Zone in Concrete. In: Maso, J.C. (Ed.), Interfaces in Cementitious Composites, Taylor & Francis, New York, p.107-116.

[4]Diamond, S., Thaulow, N., 2006. The patch microstructure in concrete: evidence that it exists and is not a backscatter SEM artifact. Cement and Concrete Composites, 28(7):606-612.

[5]Garboczi, E.J., 2002. Three-dimensional mathematical analysis of particle shape using X-ray tomography and spherical harmonics: Application to aggregates used in concrete. Cement and Concrete Research, 32(10):1621-1638.

[6]Garboczi, E.J., Bullard, J.W., 2004. Shape analysis of reference cement. Cement and Concrete Research, 34(10):1933-1937.

[7]Guo, W., 1988. Some Material Parameters on Numerical Statistical Continuum Mechanics of Concrete. TU Delft Report: 25-88-38, Delft University of Technology, Delft, the Netherlands.

[8]Guo, Z., Stroeven, M., Yang, W., Stroeven, P., 2007. Hades, Successor of Space System; Developments and New Territories for Exploration. 12th International Congress for Stereology, Saint Etienne, France.

[9]He, H., 2010. Computational Modeling of Particle Packing in Concrete. PhD Thesis, Delft University of Technology, Delft, the Netherlands.

[10]He, H., Stroeven, P., Guo, Z., Stroeven, M., 2008. Comparison of Experimental and SPACE Simulation Approaches to Particle Packing in Concrete. First International Conference on Microstructure Related Durability of Cementitious Composites, Nanjing, China. RILEM Publications S.A.R.L., Bagneux, France, p.1169-1178.

[11]He, H., Guo, Z., Stroeven, P., Stroeven, M., Sluys, L.J., 2009. Characterization of the packing of aggregate in concrete by a discrete element approach. Materials Characterization, 60(10):1082-1087.

[12]Jirásek, M., Marfia, S., 2005. Non-local damage model based on displacement averaging. International Journal for Numerical Methods in Engineering, 63(1):77-102.

[13]Jodrey, W.S., Tory, E.M., 1981. Computer simulation of isotropic, homogeneous, dense random packing of equal spheres. Powder Technology, 30(2):111-118.

[14]Klosek, J.T., 1997. The Integration of Fluid Dynamics with Discrete-Element Modeling Systems: Algorithms, Implementations and Applications. MS Thesis, Department of Civil and Environmental Engineering, MIT, Massachusetts, USA.

[15]Koehler, E.P., Fowler, D.W., 2003. Summary of Concrete Workability Test Methods. Research Report ICAR 105-1, International Center for Aggregate Research, the University of Texas at Austin, Austin, TX. Available from http://www.icar.utexas.edu/publications/105/105_1.pdf [Accessed on Dec. 20, 2010]

[16]Li, J.F., Yu, W.H., Chen, C.S., Yu, B.Y., Wei, W.C., 2006. Simulation of colloidal particle packing for photonic bandgap crystals. Journal of the American Ceramic Society, 89(4):1257-1265.

[17]Markausas, D., Kačianauskas, R., 2006. Compacting of particles for biaxial compression test by discrete element method. Journal of Civil Engineering and Management 12(2):153-161.

[18]Meakawa, K., Chaube, R., Kishi, T., 1999. Modeling of Concrete Performance: Hydration, Micro-Structure Formation and Mass Transport. Taylor & Francis, New York.

[19]Mościński, J., Bargieł, M., Rycerz, Z.A., Jacobs, P.W.M., 1989. The force-based algorithm for irregular close packing of equal spheres. Molecular Simulation, 3(4):201-212.

[20]O′Connor, R.M., Troczynski, J.R., Preece, D.S., Klosek, J.T., Williams, J.R., 1997. Discrete element modeling of sand production. International Journal of Rock Mechanics and Mining Science, 34(3-4), No. 231, p.1-15.

[21]Puri, U.C., Uomoto, T., 2002. Characterization of distinct element modeling parameters for fresh concrete and its application in shotcrete simulations. Journal of Materials in Civil Engineering, 14(2):137-144.

[22]Roelfstra, P.E., 1989. A Numerical Approach to Investigate the Properties of Numerical Concrete. PhD Thesis, Ecole Polytechnique Fédérale de Lausanne, Lausanne, Switzerland.

[23]Schnautz, T., Brito, R., Kruelle, C.A., Rehberg, I., 2003. Horizontal Brazil-nut effect and its reverse. Physical Review Letters, 95:028001.

[24]Shinbrot, T., 2004. Granular materials: The Brazil nut effect —in reverse. Nature, 429(6990):352-353.

[25]Stroeven, M., 1999. Discrete Numerical Modeling of Composite Materials—Application to Cementitious Materials. PhD Thesis, Delft University of Technology, Delft, the Netherlands.

[26]Stroeven, P., 1973. Some Aspects of the Micro-Mechanics of Concrete. PhD Thesis, Delft University of Technology, Delft, the Netherlands.

[27]Stroeven, P., Guo, Z., 2006. Modern routes to explore concrete’s complex pore space. Image Analysis Stereology, 25(2):75-85.

[28]Stroeven, P., Sluys, L.J., Guo, Z., Stroeven, M., 2006. Virtual reality studies of concrete. Forma, 21(3):227-242.

[29]Stroeven, P., Sluys, L.J., Guo, Z., Stroeven, M., 2007. Does Brazil Nut Effect Influence Concrete Properties? Proceedings of 3rd International Symposium on Sustainability in Cement and Concrete, Istanbul, Turkey. Damla Matbaacilik Reklamcilik ve Yayincilik Tic., Ankara, Turkey.

[30]Stroeven, P., He, H., Guo, Z., Stroeven, M., 2008. Pore Modelling Strategy in the Perspective of Concrete Durability. Proceedings of ICDCS Conference, Hangzhou, China. Zhejiang University Press, Hangzhou, China, p.493-499.

[31]Stroeven, P., He, H., Guo, Z., Stroeven, M., 2009a. Particle packing in a model concrete at different levels of the microstructure: evidence of an intrinsic patchy nature. Materials Characterization, 60(10):1088-1092.

[32]Stroeven, P., Hu, J., Stroeven, M., 2009b. On the usefulness of discrete element computer modeling of particle packing for material characterization in concrete technology. Computers and Concrete, 6(2):133-153.

[33]Stroeven, P., Hu, J., Koleva, D.A., 2010. Concrete porosimetry: aspects of feasibility, reliability and economy. Cement and Concrete Composites, 32(4):291-299.

[34]Truskett, T.M., Torquato, S., Sastry, S., Debenedetti, P.G., Stillinger, F.H., 1998. Structural precursor to freezing in the hard-disk and hard-sphere systems. Physical Review E, 58(3):3083-3088.

[35]Tsunekawa, H., Iwashita, K., 2001. Numerical Simulation of Triaxial Test Using Two and Three Dimensional DEM. 4th International Conference on Micromechanics of Granular Media, Powder and Grains, Sendai, Japan. Balkema, Rotterdam, p.177-180.

[36]van Breugel, K., 1991. Simulation of Hydration and Formation of Structure in Hardening Cement-Based Materials. PhD Thesis, Delft University of Technology, Delft, the Netherlands.

[37]Williams, S.R., Philipse, A.P., 2003. Random packings of spheres and spherocylinders simulated by mechanical contraction. Physical Review E, 67(1):051301.

[38]Wittmann, F.H., Roelfstra, P.E., Sadouki, H., 1985. Simulation and analysis of composition structures. Materials Science and Engineering, 68(2):239-248.

[39]Zaitsev, J.W., Wittmann, F.H., 1977. Crack Propagation in a Two-Phase Material Such as Concrete. International Conference on Fracture, ICF4, Waterloo, Canada. Pergamon, Oxford, UK, p.1197-1203.

[40]Zheng, J.J., Guo, Z.Q., Pan, X.D., Stroeven, P., Sluys, L.J., 2010. ITZ volume fraction in concrete with spheroidal aggregate particles and application: Part I. Numerical algorithm. Magazine of Concrete Research, in press.