Geotechnical properties of a natural zeolite
Geotechnical properties of a natural zeolite
复制标题
天然沸石的岩土特性
DOI：
10.1680/jgeen.16.00157
复制
发表时间：
2017
期刊：
影响因子：
--
通讯作者：
M. Perraki
中科院分区：
文献类型：
--
作者：
V. Georgiannou;D. Lefas;M. Konstadinou;M. Perraki
为确保足够的强度和允许的压缩性，对在地质环境应用中用作压实土壤衬垫的天然、粉碎和研磨沸石的岩土特性进行了调查。试验研究了级配、密度和应力水平对强度的影响，结果表明，沸石的抗剪强度与任何粒状材料一样，其直剪强度随密度和应力水平的增加而增加，随均匀度的增加而降低。为了验证这些发现直接剪切试验进行了两个石英砂相似的平均直径和不同的级配和颗粒形状。沸石与级配、粒形相近的砂的试验结果基本一致。对于主要由斜发沸石组成的所考虑的沸石，对于工程建设中常见的应力水平，颗粒破碎可以忽略不计。最后，润湿对沸石的剪切强度的影响是微不足道的。结果是I…
An investigation into the geotechnical properties of a natural, crushed and ground zeolite used as a compacted soil liner in geoenvironmental applications was carried out to ensure adequate strength and permissible compressibility. Tests aimed at examining the influence of gradation, density and stress level on strength show that the zeolite behaves as any granular material with its shear strength in direct shear increasing with density and stress level and decreasing with increasing uniformity. To validate these findings direct shear tests were performed on two quartz sands of similar mean diameter and varying gradations and grain shape. The results of the tests on the zeolite and the sand of similar gradation and grain shape nearly coincide. For the zeolite under consideration, which is mainly composed of clinoptilolite, grain crushing is negligible for stress levels common in engineering construction. Finally, the influence of wetting on the shear strength of the zeolite is insignificant. The results i...