石灰改良弃置泥浆土的三轴试验研究

Triaxial Tests Study on Lime-stabilized Disposal Mud

为了解决弃置泥浆占用土地资源、优质路基填料紧缺的问题,通过控制围压和龄期,对石灰改良的泥浆土进行了三轴试验研究。结果表明:弃置泥浆土对环境无危害,性质稳定,可直接采用石灰稳定;在不同围压和龄期条件下,石灰固化试样的应力-应变曲线均呈现应变软化特性;随着围压的增大和龄期的延长,试样的峰值强度、残余强度均增大;随着龄期的延长,试样的黏聚力和内摩擦角也增大。

To solve the problem of land resources occupied by disposal mud and shortage of high quality roadbed filler,lime-stabilized disposal mud was reused and triaxial tests were conducted to specify the mechanical properties.Results show that disposal mud showes no pollution to the environment,the property is stable,and can be stabilized with lime directly.Under different confining pressure and ages,the stress-strain curve of stabilizes soil specimen presented strain softening characteristics.With the increase of confining pressure and ages,the peak strength and residual strength of specimen increases.As the increase of ages,the cohesion and internal friction angle increases.