膨胀土

BP网络在膨胀土判别和分类中的应用

Application of BP network in discrimination and classification of expansive soil

原状膨胀土损伤演化的三轴CT试验研究

Study on damage evolution of natural expansive soil with computerized tomography during triaxial shear test

膨胀土干湿循环胀缩裂隙演化的CT试验研究

A CT study on the crack evolution of expansive soil during drying and wetting cycles

实验研究了合肥膨胀土抗剪强度指标c和Φ与天然含水量之间的关系，并提出合肥膨胀土随含水量变化的抗剪强度公式。

Through tests the paper studies the relationship between shear strength and water content of Hefei expansive soil .

GIS环境下膨胀土胀缩等级的模糊数学评判

To Judge the Swell and Shrink Grades of Expansive Soil under GIS Environment by Fuzzy Mathematics

H（24）稳定剂对膨胀土的力学性质及其有效稳定期的影响

Influence of H_ ( 24 ) Stabilizing Agent on improving Mechanical Characteristics and Retaining Long-time Effect on Inhibiting Expansibility of the Expansive Clay

SOM神经网络在膨胀土分类中的应用

Application of SOM on Classification of Expansive Soils

NCS固化剂改善膨胀土填筑路基施工技术

Improvement of the construction technology for base courses filling with expansive soils mixing NCS hardening agents

为了研究石灰对膨胀土的影响，进行了不同掺灰率的击实实验和不同掺灰率的膨胀土的室内CBR试验等土工试验。

Many beating experiments of different quantity of added lime and CBR experiments of differ periods have been made .

中膨胀土CMA改性室内试验研究

Laboratory test study on CMA-treated expansive soils

基于TDR技术的水分测量系统量测膨胀土含水量偏差分析

Analysis on Water Content Deviation of Expansive Soil Measured by Moisture Measurement System Based on TDR

在应力峰值之前，膨胀土的CT数一直在增加，同时CT数的方差减小，表明膨胀土的密度不断增加，在三向应力作用下，膨胀土变得相对均匀了；

Before deviatoric stress reaches the peak strength , the CT number increases and the variance of CT number decreases , which indicates that the density increases and the expansive soils become more homogenous .

膨胀土的CBR值随其含水率的变化规律类似于击实曲线，但CBR峰值含水率大于最佳含水率，为深入认识膨胀土的工程特性提供了帮助。

The variation of California bearing ratio ( CBR ) of the expansive soils with water content is similar to the compaction curve .

合肥地区膨胀土形成于第四纪上更新世Q3及其以前，属江淮冲积、洪积成因类型。

The swelling soil in Hefei zone was formed at the Q3 epipleistocene of the 4th subage or before . It belongs to the type of Huaihe alluviation and diluvion .

根据湿度应力场与温度应力场的相似性，利用Ansys软件的热分析功能，计算了膨胀土增湿变形。

According to the similarities between humidity stress field and temperature stress field , the deformation of expansive soils can be calculated using the function of heat analysis in ANSYS .

按照邓肯（Duncan）提出的释放荷载理论，采用有限元法对膨胀土挖方渠道开挖后的短期性状进行了模拟分析。

According to the Duncan 's Load-releasing Theory , the short-term behaviour of canal slope after its excavation is simulated and analyzed by FEM .

基于GEO-SLOPE的膨胀土路基毛细水上升分析

EXPANDED GRAPHITE Capillary Water Upward Movement Analysis of Expansive Soil Roadbed Based on GEO-SLOPE

非饱和膨胀土SWCC研究

Study on SWCC of unsaturated expansive soil

通过对原状膨胀土三轴剪切过程的CT扫描分析，结合CT数据及图像，发现其剪切受力破坏过程实际上是内部裂隙的扩张演化过程。

The CT scanning in triaxial shear test on original expansive soils is conducted . Combining images and data of the CT scanning with the stress-strain curve , it is found out that the shearing process of the samples is actually the development of interior fissure .

最后建议用fisher判别分析方法进行膨胀土的判别与分类，并建议用反映膨胀土胀缩性、强度特征的指标来验证分类结果。

Finally , the fisher 's discriminant analysis method for identification and classification of expansive soil is proposed and a approach validating the results with the indices that characterize the swelling-shrinkage and strength of expansive soil is suggested .

石灰膨胀土的最大动弹模量E（dmax）与原膨胀土性质有关，且与侧压力σ（3c）之间可用经验式表达。

The maximum dynamic elastic modulus of the lime soil E_ ( dmax ) is related to the properties of the original soil and the relationship between it and the side pressure σ _ ( 3c ) can be expressed by the empirical formula .

本文介绍了NCS固化剂的作用原理及在膨胀土中掺入NCS固化剂改善膨胀土的结构，提高路基填筑质量的施工技术。

Ways construction in the expansive soils area . The author describes the functional principles of the NCS harding agents and the methods for mixing NCS hardening agents with expansive soils to improve the expansive soils structure and the construction technology for the base courses filling quality .

用其作膨胀土改良试验，在最佳条件pH7.5，温度25℃，膨胀土样水分含量40%条件下，接种A9菌剂7%，培养7d，膨胀土自由膨胀率最高可下降33.57%。

The optimal improved condition was pH7.5 , temperature 25 ℃, water content of soil specimen 40 % , inoculum amount 7 % , culture time 7 d , under this condition , the free expansion rate can be reduced by 33.57 % .

结果表明：膨胀土与混凝土块接触面的剪切曲线均呈加工软化型，其峰值剪应力、残余剪应力符合Mohr-Coulomb准则，因此可将膨胀土与结构物接触面的剪切曲线简化为三折线曲线；

Results show that the shear curves of expansive soil-concrete interface display work softening type and both the ultimate shear stress and the residual shear stress accord with Mohr-Coulomb criterion . Therefore , the tangential curves of the interface between expansive soil and structure can be simplified as three-broken-line curves .

用该方法对广西兴业&六景高速公路一处挖方膨胀土边坡工程实例进行了分析，结果表明，边坡高度为14.3m，坡率为1∶1.5时，稳定系数为0.91，处于不稳定状态；

This method is applied to an example , whose height is 14.3 m . When the slope ratio is 1 ∶ 1.5 , the safety factor is ( 0.91 ), the slope is instable .

南阳膨胀土的工程地质特征和填筑适宜性

Engineering geological characteristics and suitability for embankment of Nanyang expansive soils

石灰改良膨胀土力学性质的研究

The Research on Mechanical Character of Expansive Soil Improved by Lime

考虑裂隙非饱和膨胀土边坡入渗模型与数值模拟

Numerical model and simulation of expansive soils slope infiltration considered fissures

苏丹管道沿线膨胀土的危害性分析

Analysis on the Hazard of Swelling Clay along the Sudan Pipeline

膨胀土铁路路堤工程病害与防治措施

Engineering Diseases of Expansion Soil Embankment of Railways and Treatment Measures