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    Volume 50, Issue 2 (September 2021)

    Special Issue Paper

    Use of Ultra-High-Performance Concrete to Produce Standard Coarse Aggregates

    (Received 8 January 2021; accepted 21 July 2021)

    Published Online: 14 September 2021

    CODEN: JTEVAB

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    Abstract

    The present study proposes to develop and use an ultra-high-performance concrete (UHPC) to produce standardized coarse aggregates. To that end, production protocols were established to control particle size distribution, shape, porosity, and compressive strength aimed at railway ballast as an application example. The artificial aggregate was produced to mimic the characteristics of a natural aggregate of gneiss used as ballast in Brazil. The characterization results showed that the artificial aggregate exhibited similar characteristics to those of gneiss, especially density, compressive strength, micro-deval abrasion loss, and resilient modulus, which are important for the application adopted. Moreover, the UHPC aggregate behaved better than gneiss after wetting-drying cycles in weather-resistance tests.

    Author Information:

    Conceição, Késsia da Silva
    Laboratory of Civil Engineering, Universidade Estadual do Norte Fluminense Darcy Ribeiro, Campos dos Goytacazes, RJ

    Maia, Paulo César de Almeida
    Laboratory of Civil Engineering, Universidade Estadual do Norte Fluminense Darcy Ribeiro, Campos dos Goytacazes, RJ

    Cordeiro, Guilherme Chagas
    Laboratory of Civil Engineering, Universidade Estadual do Norte Fluminense Darcy Ribeiro, Campos dos Goytacazes, RJ


    Stock #: JTE20210013

    ISSN:0090-3973

    DOI: 10.1520/JTE20210013

    Author
    Title Use of Ultra-High-Performance Concrete to Produce Standard Coarse Aggregates
    Symposium ,
    Committee C09