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The effect of blending granular aggregates of different origin on the strength of concrete

Author

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  • Médici, M.E.
  • Benegas, O.A.
  • Uñac, R.O.
  • Vidales, A.M.

Abstract

This work correlates the resistance of concrete cores with the physical properties of the granular material forming it. A basic physical characterization is conducted, taking into account the origin of the grains involved in the concrete mixture; that is, if they come from natural degradation (natural granular aggregates) or from a grinding process (crushed granular aggregates). Apparent and real densities, shape factors, packing densities, and specific surface areas of the grains are measured. The results are discussed as a function of size and origin of the grains. Several mixtures are prepared following a standard protocol and using different ratios of natural and crushed aggregates. For each ratio, six cores are prepared and uniaxial compression tests are performed. A non-monotonic relation between the resistance of concrete and the percentage of crushed aggregate present in it is obtained, with an optimum ratio depending on the physical properties of the grains.

Suggested Citation

  • Médici, M.E. & Benegas, O.A. & Uñac, R.O. & Vidales, A.M., 2012. "The effect of blending granular aggregates of different origin on the strength of concrete," Physica A: Statistical Mechanics and its Applications, Elsevier, vol. 391(5), pages 1934-1941.
    • Handle: RePEc:eee:phsmap:v:391:y:2012:i:5:p:1934-1941
    DOI: 10.1016/j.physa.2011.10.034
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    References listed on IDEAS

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    1. Herrmann, H.J. & Mahmoodi Baram, R. & Wackenhut, M., 2003. "Searching for the perfect packing," Physica A: Statistical Mechanics and its Applications, Elsevier, vol. 330(1), pages 77-82.
    2. Robinson, D.A & Friedman, S.P, 2002. "Observations of the effects of particle shape and particle size distribution on avalanching of granular media," Physica A: Statistical Mechanics and its Applications, Elsevier, vol. 311(1), pages 97-110.
    3. Arias García, Pablo A. & Uñac, Rodolfo O. & Vidales, Ana M. & Lizcano, Arcesio, 2011. "Critical parameters for measuring angles of stability in natural granular materials," Physica A: Statistical Mechanics and its Applications, Elsevier, vol. 390(23), pages 4095-4104.
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    Cited by:

    1. Xu, Wenxiang & Chen, Wen & Chen, Huisu & Tian, Xia & Zhao, Haitao, 2014. "Determination of overlapping degree of interfacial layers around polydisperse ellipsoidal particles in particulate composites," Physica A: Statistical Mechanics and its Applications, Elsevier, vol. 399(C), pages 126-136.

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