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Three-dimensional shape analysis of coarse aggregates: New techniques for and preliminary results on several different coarse aggregates and reference rocks

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Three-dimensional shape analysis of coarse aggregates methodology and preliminary results on several different coarse aggregates and reference rocks.pdf (341.66 KB)
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Quiroga, Pedro Nel
fowler, david
Erdogan, Sinan
Saleh, H.A.
Livingston, Richard
Garboczi, Edward J.
Ketcham, Peter M.
Hagedorn, John G.
Satterfield, Steven G.
Abstract (Spanish)
La forma de los áridos utilizados en el hormigón es un parámetro importante que ayuda a determinar muchas propiedades del hormigón, especialmente la reología del hormigón fresco y las propiedades mecánicas a edades tempranas. En este artículo se analizan las técnicas de preparación de muestras y análisis de imágenes necesarias para obtener una imagen tridimensional de las partículas de los áridos mediante tomografía computarizada de rayos X, que resulta adecuada para el análisis armónico esférico. Se analizan las formas de tres rocas de referencia para determinar la incertidumbre mediante comparación directa con la geometría de sus imágenes reconstruidas. Se demuestra una técnica de lenguaje de modelado de realidad virtual que puede proporcionar vistas tridimensionales rápidas y precisas de agregados. Se comparan los datos de forma de varios tipos diferentes de agregados gruesos y se utilizan para ilustrar los posibles análisis matemáticos de forma que posibilita la información armónica esférica.
Abstract (English)
The shape of aggregates used in concrete is an important parameter that helps determine many concrete properties, especially the rheology of fresh concrete and early-age mechanical properties. This paper discusses the sample preparation and image analysis techniques necessary for obtaining an aggregate particle image in 3-D, using X-ray computed tomography, which is then suitable for spherical harmonic analysis. The shapes of three reference rocks are analyzed for uncertainty determination via direct comparison to the geometry of their reconstructed images. A Virtual Reality Modeling Language technique is demonstrated that can give quick and accurate 3-D views of aggregates. Shape data on several different kinds of coarse aggregates are compared and used to illustrate potential mathematical shape analyses made possible by the spherical harmonic information
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9 páginas
URI: https://repositorio.escuelaing.edu.co/handle/001/2423
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AM - Grupo de Investigación en Estructuras y Materiales
References

E.J. Garboczi, Three-dimensional mathematical analysis of particle shape using X-ray tomography and spherical harmonics: application to aggregates used in concrete, Cem. Concr. Res. 32 (2002) 1621–1638

J.F. Douglas, E.J. Garboczi, Intrinsic viscosity and polarizability of particles having a wide range of shapes, Adv. Chem. Phys. 91 (1995) 85–153

E.J. Garboczi, K.A. Snyder, J.F. Douglas, M.F. Thorpe, Geometrical percolation threshold of overlapping ellipsoids, Phys. Rev., E 52 (1995) 819–828.

E.J. Garboczi, J.F. Douglas, Intrinsic conductivity of objects having arbitrary shape and conductivity, Phys. Rev., E 53 (1996) 6169–6180.

M.L. Mansfield, J.F. Douglas, E.J. Garboczi, Intrinsic viscosity and the electrical polarizability of arbitrarily shaped objects, Phys. Rev., E 64 (2001) 61401–61416.

E.J. Garboczi, J.F. Douglas, R.B. Bohn, The intrinsic elastic moduli of rectangular parallelepiped inclusions over a modest range of shape and a large range of property contrast, Special Issue of Mech. of Materials. (in press).

A.C. Kak, M. Slaney, Principles of Computerized Tomographic Imaging, SIAM, Philadelphia, 2001.

E.J. Garboczi, Tying together theory and tests via virtual testing, Stone, Sand, and Gravel Review, January/February 2006, pp. 10–11, Available in Electronic Monograph, http://ciks.cbt.nist.gov/monograph/, Part I, Chapter 10, Section 6

E.J. Garboczi, Tying together theory and tests via virtual testing, Stone, Sand, and Gravel Review, January/February 2006, pp. 10–11, Available in Electronic Monograph, http://ciks.cbt.nist.gov/monograph/, Part I, Chapter 10, Section 6.

D.W. Ritchie, G.J.L. Kemp, Fast computation, rotation, and comparison of low resolution spherical harmonic molecular surfaces, J. Comp. Chem. 20 (1999) 383–395.

M.A. Taylor, E.J. Garboczi, S.T. Erdogan, D.W. Fowler, Some properties of irregular particles in 3-D, Powder Technol. 162 (2006) 1–15.

J.C. Russ, The Image Processing Handbook, Fourth edition CRC Press, Boca Raton, Florida, 2002.

www.web3d.org/resources/vrml_ref_manual/Book.html.

ASTM Annual Book of Standards, Vol. 04.03 Concrete and ConcreteMaking Materials, American Society for Testing and Materials, West Conshohocken, PA, 1999.

P. Quiroga, The effect of the aggregate characteristics on the performance of Portland cement concrete, Ph.D. Dissertation, University of Texas at Austin, December 2003.

S.T. Erdogan, The effect of aggregates on the properties of concrete and proportioning methods, M.S. Thesis, The University of Texas at Austin. August 2003.

S.T. Erdogan, Determination of aggregate shape properties using X-ray tomographic methods and the effect of shape on concrete rheology, Ph.D. Dissertation, University of Texas at Austin, August 2005.

E. Masad, S. Saadeh, T. Al-Rousan, E.J. Garboczi, D. Little, Computations of particle surface characteristics using optical and X-ray computed tomography images, Comp. Mater. Sci. 34 (2005) 406–424.

J.C. Davis, Statistics and Data Analysis in Geology, 3rd edition Wiley, 2002.

S. Leicester, J. Finney, R. Bywater, A quantitative representation of molecular surface shape: I. Theory and development of the method, J. Math. Chem. 16 (1994) 315–341.

M.A. Taylor, Quantitative measures for shape and size of particles, Powder Technol. 124 (2002) 94–100.

G. Polya, G. Szego, Isoperimetric Inequalities in Mathematical Physics, Princeton University Press, Princeton, 1951.

M. Grigoriu, E.J. Garboczi, C. Kafali, Spherical harmonic-based random fields for aggregates used in concrete, Powder Technol. (in press).

http://ciks.cbt.nist.gov/monograph, see button for VCCTL.