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对JNS-1固化粉煤灰进行了单轴和三轴应力应变试验,分析了单轴应力-应变曲线和不固结不排水三轴应力-应变曲线的特点,初步探讨了龄期、固化剂掺量、压实度及围压对曲线形状的影响。单轴应力应变试验结果表明,JNS-1固化粉煤灰后期的强度和变形特性变化较小,随着固化剂掺量和压实度的增加,单轴应力-应变曲线形状变化明显。三轴应力应变试验结果表明,随着固化剂掺量的增加,其破坏应变呈负向增长,而破坏偏应力呈现正向增长的态势,曲线在高围压下呈现硬化型,在较低围压时呈现软化型。
The uniaxial and triaxial stress-strain tests of JNS-1 cured fly ash were carried out. The uniaxial stress-strain curves and unconfined undrained triaxial stress-strain curves were analyzed. The effects of age, curing agent Effect of dosage, compaction degree and confining pressure on curve shape. The results of uniaxial stress and strain tests show that the strength and deformation characteristics of JNS-1 fly ash have little change at later stage, and the uniaxial stress-strain curve changes obviously with the increase of curing agent content and compaction degree. The results of triaxial stress-strain tests show that with the increase of the amount of hardener, the failure strain increases in a negative direction while the deviatoric stress deviates in the positive direction. The curve shows hardening under high confining pressure. At the lower periphery Pressure shows softening type.