Effect of pore water chemistry on anisotropic behavior of clayey soil and possible application in underground construction
Effect of pore water chemistry on anisotropic behavior of clayey soil and possible application in underground construction
复制标题
孔隙水化学对粘土各向异性行为的影响及其在地下建筑中的可能应用
DOI：
10.1016/j.undsp.2016.11.002
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发表时间：
2016-12
影响因子：
6.4
通讯作者：
Takenori Hino
中科院分区：
文献类型：
--
作者：
Jinchun Chai;Takehito Negami;Kosuke Aiga;Takenori Hino
通过室内试验研究了孔隙水化学对重塑有明粘土固结和抗剪强度各向异性的影响。向土壤孔隙水中加入氯化钠（盐）（NaCl）和氯化钙（CaCl 2）两种化学物质以增强土壤颗粒的絮凝微结构;加入三磷酸钠（Na 5 P3 O 10）和六偏磷酸钠（Na 6P 6 O 18）两种分散剂。这些化学物质在孔隙水中的浓度为2- 3%。固结系数和不排水抗剪强度的各向异性程度随NaCl和CaCl 2的加入而减小，随分散剂的加入而增大。各向异性程度也随着一维（1D）变形而增加，并且具有分散添加剂的样品具有更高的增加率。通过扫描电镜（SEM）图像定性证实，分散剂的加入促进了分散微结构的形成，提高了各向异性程度，而絮凝剂的加入则起到了相反的作用。本文还讨论了这些研究结果在地下工程中的可能应用。
The effect of pore water chemistry on anisotropic behavior of consolidation and shear strength of reconstituted Ariake clay has been investigated experimentally. Two types of chemicals added into the pore water of the soil for enhancing flocculation microstructure of soil particles are sodium chloride (salt) (NaCl), and calcium chloride (CaCl2); and two dispersants added are sodium triphosphate (Na5P3O10) and sodium hexametaphosphate (Na6P6O18), respectively. The concentrations of these chemicals in pore water were 2–3%. Degrees of anisotropy of the coefficient of consolidation and undrained shear strength decreased with adding NaCl and CaCl2, but increased with adding the dispersants. Degree of anisotropy also increased with one-dimensional (1D) deformation and the samples with dispersive additives had higher increase rate. It has been confirmed qualitatively by scanning electron microscopy (SEM) images that adding dispersive chemicals promoted the formation of dispersive microstructure and increased the degree of anisotropy, and the chemicals enhancing flocculent microstructure had an inverse effect. The possible application of the findings to underground construction has been discussed also.
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影响因子：
--
作者：
W. Busscher
通讯作者：
W. Busscher
影响因子：
3.6
作者：
Hiroyuki Tanaka;J. Locat
通讯作者：
Hiroyuki Tanaka;J. Locat
DOI：
10.1097/00010694-196404000-00013
发表时间：
1977
期刊：
--
影响因子：
--
作者：
H. Olphen
通讯作者：
H. Olphen
影响因子：
3.6
作者：
K. Lee;R. K. Rowe
通讯作者：
K. Lee;R. K. Rowe
影响因子：
6.1
作者：
C. Mizota;F. Longstaffe
通讯作者：
C. Mizota;F. Longstaffe