膨胀混凝土在钢管约束下的力学性能以及微观特征

Mechanical behavior and microstructure feature of expansive concrete controlled in steel tube

对比研究了膨胀混凝土和普通混凝土在自由状态以及在钢管约束状态下的力学性能以及微观结构特征。实验结果表明 ,膨胀混凝土在约束状态下具有较好的力学性能 ,大孔含量较少 ,微孔含量较多 ,而且孔内晶体填充程度高 ,结构致密。

The paper investigated the mechanical behavior and the microstructure feature of expansive concrete and ordinary concrete controlled and uncontrolled in steel tube.The test results showed that expansive concrete controlled in steel tube has the highest strength and elasticity modulus.The microstructure of expansive concrete controlled in steel tube was also improved,the size of pores was reduced,and these pores were filled with crystals.The paper afforded a new way to improve the behavior of concrete controlled in steel cube