【摘要】 采用压汞仪、氦比重仪和ＳＴＥＭ等仪器研究了ＭＤＦ水泥抗弯强度与大孔尺寸和孔隙率的关系。实验结果表明，抗弯强度与孔隙率有良好的相关性，孔隙率降低，抗弯强度明显增高。抗弯强度与大孔尺寸没有明显的相关性，Ｋｅｎｄａｌｌ修正的Ｇｒｉｌｆｉｔｈ方程不适用于ＭＤＦ水泥。更多还原

【Abstract】 The rclsyionships between maximum pore size, porosity and flcxural strength of MDF cement were investigated by mercury intrusion method, helium pycnometer, STEM, etc. The experimental results show that there is a good relatlollship between porosity and fie-cural strength and the lower the porosily, the higher the fie-cural strength. There is no obvious relationship between maximum pore size and fie-cural strength. The Griffith equation modified by Kendall is unsuitable for MDF cement.更多还原