Specimen size effect on the residual properties of engineered cementitious composites subjected to high temperatures
Specimen size effect on the residual properties of engineered cementitious composites subjected to high temperatures
复制标题
DOI：
10.1016/j.cemconcomp.2013.09.019
复制
发表时间：
2014-01-01
影响因子：
10.5
通讯作者：
Erdem, Tahir Kemal
中科院分区：
文献类型：
--
作者：
Erdem, Tahir Kemal
在这项研究中，尺寸效应对工程水泥基复合材料（ECC）的残余性能进行了研究，试样暴露于高温高达800摄氏度。用标准ECC混合物生产具有不同尺寸的圆柱形试样。空冷后，孔结构的变化，残余抗压强度和应力-应变曲线，由于高温测定。实验结果表明，尽管试样尺寸的增加，在高温暴露过程中没有发生爆炸剥落的任何试样。随着试样尺寸的增大和暴露温度的升高，抗压强度和刚度降低。对于所有样本尺寸，高温导致的压缩强度和刚度降低百分比相似。(C)2013爱思唯尔有限公司保留所有权利。
In this study, size effect on the residual properties of Engineered Cementitious Composites (ECC) was investigated on the specimens exposed to high temperatures up to 800 degrees C. Cylindrical specimens having different sizes were produced with a standard ECC mixture. Changes in pore structure, residual compressive strength and stress-strain curves due to high temperatures were determined after air cooling. Experimental results indicate that despite the increase of specimen size, no explosive spalling occurred in any of the specimens during the high temperature exposure. Increasing the specimen size and exposure temperature decreased the compressive strength and stiffness. Percent reduction in compressive strength and stiffness due to high temperature was similar for all specimen sizes. (C) 2013 Elsevier Ltd. All rights reserved.