结果表明：拉伸温度高的CDP纤维的收缩率、卷曲度低，而卷曲弹性率高；
It is shown that the shrinkage, crimp ratio of CDP-FDY fibers reduce and the crimp rigidity increase with the increasing drawn temperature.
采用自行设计的水泥砂浆塑性收缩应力测试装置研究了低掺量下聚丙烯纤维对水泥砂浆塑性收缩应力影响。
In this paper, the effects of polypropylene fibers on the plastic shrinkage stresses of the cement mortars were investigated by use of self-designed plastic shrinkage stresses measuring device.
低掺量的聚丙烯纤维掺入混凝土后可显著控制混凝土早期收缩裂缝，提高混凝土的耐久性。
Obviously, the addition of polypropylene fibers is significant in controlling plastic shrinkage cracks in the early stage and improving ductility for concrete at low fiber volume fraction.
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