龄期对混凝土双单轴强度比的影响分析

Influence analysis of age on concrete blaxial and uniaxial strength ratio

混凝土的双轴等压强度与单轴压强度的比值β是确定混凝土破坏准则的一个关键参数。文中通过采用静动三轴电液伺服系统对不同强度等级、龄期的混凝土进行双轴等压强度和单轴压强度试验研究。结果表明,β值随混凝土龄期的增长而降低,随混凝土强度等级的升高变化不大。

The ratio β between the concrete blaxial constant pressure and uniaxial pressure strength is the key parameter to determine the concrete failure criterion. The test study of blaxial constant pressure and uniaxial pressure strength is made for the concrete with the different intensity levels and ages by using the static and dynamic triaxial electro-hydraulic servo system. The results show that the β value decreases with the increase of the concrete age and the little change with the increase of the concrete strength levels.