外掺MgO混凝土的基本力学与长期耐久性能

Basic Mechanics and Long Term Durability of Concrete Mixed with MgO

对外掺MgO微膨胀混凝土的力学强度、弹性模量、抗拉、干缩、徐变变形 ,抗冻、抗渗、抗侵蚀、抗冲磨、抗碳化等各项基本力学与长期耐久性能以及热学性能进行了全面系统研究 ,并探索既掺粉煤灰又掺MgO对其各项性能的影响 .12年和 2 0年的力学与变形资料研究表明 ,MgO微膨胀混凝土的长期力学与耐久性能既是安定的又是稳定的 ,微膨胀对混凝土力学性质的影响不大 .

In the paper introduced are the characteristics of concrete mixed with MgO microexpensional agent,including mechanics,heat,fast deformation,deformation with time,long term durability and so on.The effect of fly ash and MgO on the above characteristics is discussed.According to the long term experimental results,it is illustrated that the long term mechanical behavior of MgO concrete is stable and the expanding agent has little effect on the long term mechanical properties of the concrete.