摘要
为了研究冻融循环作用对纤维水泥改良风积沙力学性能的影响,对冻融循环的试样进行无侧限抗压强度试验。试验结果表明,冻融循环次数增加使得纤维加筋试样的无侧限抗压强度减小,强度损失主要发生在第1次冻融循环,强度降低了13.2%~32.6%;但在经历10次冻融循环后,无侧限抗压强度趋于稳定,此时,强度损失了42.2%~53.4%。研究结果可为季节性冻土地区的风积沙铁路路基基床填料改良提供参考。
The unconfined compression strength(UCS)tests were conducted to evaluate the impact of freeze–thaw(F-T)cycles on the UCS of cemented aeolian sand reinforced with basalt fiber(CASRBF).The results show that the UCS of CASRBF change greatly at the first F-T cycle,the UCS of samples decreases approximately by 13.2-32.6%%.After ten F-T cycles,the UCS tend to be stable.At this time,the UCS has lost by 42.2-53.4%.The research results are referential to cemented aeolian sand used as surface filling of the subgrade bed in cold regions.
作者
丁茴
DING Hui(China Railway SIYUAN Survey and Design Group Co.,Ltd.,Wuhan 430063)
出处
《铁道勘测与设计》
2024年第4期84-87,共4页
Railway Survey and Design
