Effect of temperature and pressure on the degradation of cement asphalt mortar exposed to water
Effect of temperature and pressure on the degradation of cement asphalt mortar exposed to water
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DOI：
10.1016/j.conbuildmat.2012.03.002
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发表时间：
2012-09
影响因子：
7.4
通讯作者：
Shu-guang Hu;Yunhua Zhang;Fazhou Wang
中科院分区：
文献类型：
--
作者：
Shu-guang Hu;Yunhua Zhang;Fazhou Wang
水侵蚀是水泥沥青砂浆（CAM）性能下降的主要因素之一。本文研究了暴露于水中的CAM在不同水温（20℃、40℃和60℃）和压力（0.0MPa、0.1MPa、0.2MPa、0.3MPa、0.4MPa和0.5MPa）下的强度变化，并通过压汞孔隙率（MIP）和扫描电子显微镜（SEM）分析了微观结构的演变。结果表明，温度和压力都会引起CAM的劣化，随着水温的升高，CAM的抗压强度降低，随着水压的增加，CAM的抗压强度降低。
Water erosion is one of the major factors for performance degradation of cement asphalt mortar (CAM). In the paper, the strength variations of CAM exposed to water was investigated at various water temperatures (20°C, 40°C and 60°C) and pressures (0.0MPa, 0.1MPa, 0.2MPa, 0.3MPa, 0.4MPa and 0.5MPa) and the microstructure evolution was analyzed by mercury intrusion porosimetry (MIP) and scan electronic microscope (SEM). Results indicate that temperature and pressure both cause the deterioration of CAM, the compressive strength of CAM decreases with higher water temperature and its compressive strength decreases with increases of water pressure.