MECHANICAL PROPERTIES OF FUNCTIONALLY-GRADED FIBER-REINFORCED CONCRETE (FGFRC) WITH COARSE AGGREGATES
The mechanical properties of the functionally-graded fiber-reinforced concrete (FGFRC) with coarse aggregates was investigated.The alumina ceramic balls with different sizes are used as the coarse aggregates to prepare FGFRC with two and three layers.All the samples are divided into two series;one of them is used for mechanical properties test, the other is to test the interfacial bonding properties of coarse aggregate concrete with different diameters.The results show that there was no obvious flaw in the interface formed by continuous casting process.Compared with the large size aggregates, the small size aggregates results in the increase of bending strength, but the compressive strength of FGFRC reduced significantly.The mechanical performances of FGFRC are also influenced by the layer numbers.The bending properties and compressive strength of the FGFRC with three-layer structure are both at a lower level compared with that of the FGFRC with two-layer structure.FGFRC with the two-layer structure overall shows excellent mechanical properties.
Functionally-graded fiber-reinforced concrete Coarse aggregates Number of layers Mechanical property Interface bonding performance
Xiaobo Zheng Jianzhong Lai Jinfeng Cao Hongji Li
School of Materials Science and Engineering, Nanjing University of Science and Technology, Nanjing, China
国际会议
福州
英文
411-422
2018-11-07（万方平台首次上网日期，不代表论文的发表时间）