二灰砂砾的力学特性及其应用研究

Mechanical performance and application of fly ash-lime grit

通过室内三轴试验对二灰砂砾的应力-应变曲线及抗剪强度进行了研究。研究表明:随着龄期的增加,二灰砂砾的抗剪强度逐渐增大,破坏强度随之增加;二灰砂砾的粘聚力和内摩擦角随龄期增加而增加;相比于连续级配,折断级配的抗剪强度优于连续级配。

In this paper, the stress -strain curves and shear strength of fly ash -lime grit are studied by laboratory three -axis test. Research shows that： with the increase of age, the shear strength of fly ash - lime grit increases gradually, and the failure strength increased; the cohesion and internal friction of fly ash -lime grit increases with the increase of age; compared with continuous gradation, the shear strength of breakdown gradation is better.