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Coal rejects concrete (CRC) made of the industry by-product generated during the mining preparation and washing procedure is usually regarded as the alternative to natural aggregate concrete (NAC). To improve the low strength and brittleness of CRC, this paper presents a new structural form, termed fibre-reinforced polymer (FRP)-confined CRC (FCCR) column. The most attractive feature of the FCCR column is its cost-effectiveness and environmental-friendly, because that the aggregates of infilled CRC are all from sieved coal rejects without any more artificial crushing process. To obtain the fur...

Abstract The relatively low strength and brittleness are believed to be two main factors restricting the widely use of coal reject concrete (i.e. CRC) in practical applications. This paper presents a concept of the novel hybrid concrete column incorporating fibre-reinforced polymer (i.e. FRP), termed FRP-confined CRC (i.e. FCCR) columns, to widen the use of CRC. The systematic compression tests on natural aggregates concrete (i.e NAC) and CRC with the large range replacement ratios of natural aggregates in volume (i.e. 0%, 25%, 50%, 75% and 100%) were firstly carried out, followed by the comp...