多种因素对纤维水泥红土加固效果的影响

为探明玄武岩纤维水泥土在低温养护条件下的力学特性,将短切玄武岩纤维按不同配比掺入取自长春地区的红土中,分两批制作历时三个月完成,试块采取自然水养,结合无侧限抗压强度试验和观测,研究了自然养护温度、龄期、单一纤维掺入比以及纤维长度对水泥土抗压强度的影响.在此基础上,进一步考虑振捣时间、含水量和混合纤维掺入比等因素,探讨了...

Influence of Multiple Factors on the Reinforcement Effect of Fiber Cement Laterite

In order to investigate the mechanical properties of basalt fiber reinforced cemented soil with the curing condition of low temperature, cement and short-cut basalt fibers with different mixing ratios were put into laterite from Changchun, China. The specimens were made in two batches and cured in room temperature water. The whole experiment last three months. The curing temperature, curing time, ratios of single fiber, and lengths of fiber on the strength of cemented soil were studied based on the unconfined compressive strength tests. And then, the development law and internal mechanism of compressive strength with the factors, such as vibrating time, water content and blending ratio of mixed fiber, were discussed. The results show that fiber can still improve the unconfined compressive strength of cemented soil at 28 d under the curing condition of low temperature water. The test curve shows a broken line development and has a peak value, and the mixed fiber has similar characteristics. In addition, the compressive strength of fiber reinforced cemented soil increases with the increase of curing time and vibration time or the decrease of natural water content of soil. Fiber bundle phenomenon is found by experimental observation, which needs further study. The research results provide reference for the winter construction of basalt fiber reinforced cemented soil.