Journal Published Online: 14 September 2021
Volume 50, Issue 2

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

CODEN: JTEVAB

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, Brazil
Maia, Paulo César de Almeida
Laboratory of Civil Engineering, Universidade Estadual do Norte Fluminense Darcy Ribeiro, Campos dos Goytacazes, RJ, Brazil
Cordeiro, Guilherme Chagas
Laboratory of Civil Engineering, Universidade Estadual do Norte Fluminense Darcy Ribeiro, Campos dos Goytacazes, RJ, Brazil
Pages: 12
Price: $25.00
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Details
Stock #: JTE20210013
ISSN: 0090-3973
DOI: 10.1520/JTE20210013