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Modeling of Aggregates Packing Degree and PSD for Optimizing Low Cement Concrete

Modeling of Aggregates Packing Degree and PSD for Optimizing Low Cement Concrete. M.Reza Moini Advisors: Konstantin Sobolev , Ismael Flores-Vivian. PCA. What Grading (PSD) is optimal? How the Real-Packing occurs in concrete? How can we Model real Packing?

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Modeling of Aggregates Packing Degree and PSD for Optimizing Low Cement Concrete

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  1. Modeling of Aggregates Packing Degree and PSD for Optimizing Low Cement Concrete M.RezaMoini Advisors: Konstantin Sobolev, Ismael Flores-Vivian PCA What Grading (PSD) is optimal? How the Real-Packing occurs in concrete? How can we Model real Packing? How packing is related to PSD and Mechanical Performance? PCA

  2. PSD is a factor of spacing. Practical models need to realize the packing degree. For any blends, the ideal curve can be attempted. Optimal Blends! How to achieve a Model? Practical Optimal PSD Modeling Optimal PSD (3D) Ideal PSD Fuller-Thomson curves Southern Wisc. Agg. Virtual 3D Spheres Modeling Optimal PSD (2D-verification) • 86% packing, 500 disks,n=10, =1.005, = 10, S = 1.025 • 5M-10M spheres model can replace/minimize the PSD testing attempts

  3. Mechanical performance is a function of Loose Packing= real agg. packing is concrete is loose. The LPD directly contributes to the C.S. of concrete and it should be considered for minimizing the void content or cement paste. Model minimize the need for Packing degree testing What does Packing degree do? 3D Visualization Modeled P.D. (Compacted) Experimental P.D. (Compacted ) Collusion:

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