Desiccation cracking behavior of polypropylene fiber–reinforced clayey soil
Desiccation cracking behavior of polypropylene fiber–reinforced clayey soil
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DOI：
10.1139/t2012-067
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发表时间：
2012-08
影响因子：
3.6
通讯作者：
C. Tang;Bin Shi;Yu-Jun Cui;Chun Liu;Kai Gu
中科院分区：
文献类型：
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作者：
C. Tang;Bin Shi;Yu-Jun Cui;Chun Liu;Kai Gu
采用初始饱和土和纤维增强土干燥试样，研究了纤维增强对粘性土抗裂性的改善作用。采用图像处理技术定量描述了纤维添加对裂纹图案的几何和形态特征的影响。结果表明：纤维的掺入对土的干燥开裂行为有显著影响：纤维的掺入显著提高了土的抗裂性，显著减少了干燥开裂的数量。一般情况下，表面裂纹比（表面的裂缝总表面），土块的数量，平均长度和宽度的裂缝，和裂缝网络的连通性随纤维含量的增加而减少，而土块的平均面积，每单位面积的节点数，每单位面积的裂纹段数，裂纹密度，和试样的完整性增加。在裂纹扩展过程中，表面裂纹率随含水量的减少而增加。
Improvement of the crack resistance of clayey soils by fiber reinforcement was investigated using initially saturated and fiber-reinforced soil specimens subjected to desiccation. An image-processing technique was used to quantitatively describe the effect of fiber addition on the geometrical and morphological characteristics of crack patterns. The results show that the soil desiccation cracking behavior was significantly influenced by fiber inclusion: the crack resistance was significantly improved and the amount of desiccation cracks was significantly reduced by fiber addition. Generally, the surface crack ratio (surface of cracks to total surface), number of clods, average length and width of cracks, and crack network connectivity decreased with increasing fiber content, while the average area of clods, number of nodes per unit area, number of crack segments per unit area, crack density, and specimen integrity increased. During crack propagation, the surface crack ratio increased with decreasing water ...