ASTM D4186/D4186M-12e1
用可控应变荷载法的饱和性粘土的单向压实性能的标准试验方法

Standard Test Method for One-Dimensional Consolidation Properties of Saturated Cohesive Soils Using Controlled-Strain Loading

被代替

ASTM D4186/D4186M-12e1 发布历史

ASTM D4186/D4186M-12e1由美国材料与试验协会 US-ASTM 发布于 2012。

ASTM D4186/D4186M-12e1 在中国标准分类中归属于: P13 工程地质、水文地质勘察与岩土工程，在国际标准分类中归属于: 93.020 土方工程、挖掘、地基构造、地下工程。

ASTM D4186/D4186M-12e1 用可控应变荷载法的饱和性粘土的单向压实性能的标准试验方法的最新版本是哪一版？

最新版本是 ASTM D4186/D4186M-20e1 。

ASTM D4186/D4186M-12e1 发布之时，引用了标准

• ASTM D1587 土工技术用土壤薄壁管抽样的标准实施规程
• ASTM D2216 实验室测定土壤和岩石中水(湿气)含量的试验方法
• ASTM D2435 土壤单向固结性能的标准试验方法
• ASTM D2487 工程用土壤分类的标准试验方法
• ASTM D2488 土壤描述推荐规程（目视手动程序）
• ASTM D3213 处理、储存和制备软质完整海洋土壤的标准实施规程
• ASTM D3550 土壤的厚壁环衬分隔筒取样的标准实施规程
• ASTM D3740 工程设计及建筑中使用的土壤和岩石的试验和或检查中使用试剂评定的规程
• ASTM D4220 保存和运输土壤样品的标准实施规程
• ASTM D4318 土壤液限 塑性极限和塑性指数的标准试验方法
• ASTM D4452 土壤样品的X射线照相的标准试验方法
• ASTM D4753 土壤、岩石及施工材料试验用天平和刻度评定、选择和规定的标准规范
• ASTM D5720 土工用电子传感器型压力测量系统静态校准标准实施规程
• ASTM D6026 在土工学数据中使用明显数字的标准实施规程
• ASTM D6027 岩土工程用校准线性位移传感器的标准试验方法
• ASTM D6519 用液压操作的固定活塞采样器进行土壤取样的标准实施规程*， 2024-05-07 更新
• ASTM D653 采用流动空气测量未饱和多孔材料渗透性的标准试验方法
• ASTM D6913 使用筛分分析土壤粒径分布（梯度）的标准测试方法
• ASTM D7015 获取土壤完整块状试样, 立方体以及圆柱体试样的标准实施规程*， 2024-05-07 更新
• ASTM D854 用水置换法测定土壤固体比重的标准试验方法

* 在 ASTM D4186/D4186M-12e1 发布之后有更新，请注意新发布标准的变化。

ASTM D4186/D4186M-12e1的历代版本如下：

• 2020年 ASTM D4186/D4186M-20e1 使用受控应变载荷的饱和粘性土的一维固结性能的标准测试方法
• 2020年 ASTM D4186/D4186M-20 使用受控应变载荷的饱和粘性土的一维固结性能的标准测试方法
• 2012年 ASTM D4186/D4186M-12e1 用可控应变荷载法的饱和性粘土的单向压实性能的标准试验方法
• 2012年 ASTM D4186/D4186M-12 用可控应变荷载测试饱和粘性土单维固结特性的标准试验方法
• 2006年 ASTM D4186-06 用可控应变荷载测试饱和粘性土单维固结性能的标准试验方法
• 1989年 ASTM D4186-89(1998)e1 使用受控应变载荷的饱和粘性土的一维固结性能的标准测试方法

 

5.1 Information concerning magnitude of compression and rate-of-consolidation of soil is essential in the design of earth structures and earth supported structures. The results of this test method may be used to analyze or estimate one-dimensional settlements, rates of settlement associated with the dissipation of excess pore-water pressure, and rates of fluid transport due to hydraulic gradients. This test method does not provide information concerning the rate of secondary compression.

5.2 Strain Rate Effects:

5.2.1 It is recognized that the stress-strain results of consolidation tests are strain rate dependent. Strain rates are limited in this test method by specification of the acceptable magnitudes of the base excess pressure ratio during the loading phase. This specification provides comparable results to the 100 % consolidation (end of primary) compression behavior obtained using Test Method D2435.

5.2.2 Field strain rates vary greatly with time, depth below the loaded area, and radial distance from the loaded area. Field strain rates during consolidation processes are generally much slower than laboratory strain rates and cannot be accurately determined or predicted. For these reasons, it is not practical to replicate the field strain rates with the laboratory test strain rate.

5.3 Temperature Effects:

5.3.1 Temperature affects the rate parameters such as hydraulic conductivity and the coefficient of consolidation. The primary cause of temperature effects is due to the changes in pore fluid viscosity but soil sensitivity may also be important. This test method provides results under room temperature conditions, corrections may be required to account for specific field conditions. Such corrections are beyond the scope of this test method. Special accommodation maybe made to replicate field temperature conditions and still be in conformance with this test method.

5.4 Saturation Effects:

5.4.1 This test method may not be used to measure the properties of partially saturated soils because the method requires the material to be back pressure saturated prior to consolidation.

5.5 Test Interpretation Assumptions—The equations used in this test method are based on the following assumptions:

5.5.1 The soil is saturated.

5.5.2 The soil is homogeneous.

5.5.3 The compressibility of the soil particles and water is negligible.

5.5.4 Flow of pore water occurs only in the vertical direction.

5.5.5 Darcy's law for flow through porous media applies.

5.5.6 The ratio of soil hydraulic conductivity to compressibility is constant throughout the specimen during the time interval between individual reading sets.

5.5.7 The compressibility of the base excess pressure measurement system is negligible compared to that of the soil.

5.6 Theoretical Sol

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标准号

ASTM D4186/D4186M-12e1

发布

2012年

发布单位

美国材料与试验协会

替代标准

ASTM D4186/D4186M-20

当前最新

ASTM D4186/D4186M-20e1

 

 

引用标准

ASTM D1587 ASTM D2216 ASTM D2435 ASTM D2487 ASTM D2488 ASTM D3213 ASTM D3550 ASTM D3740 ASTM D4220 ASTM D4318 ASTM D4452 ASTM D4753 ASTM D5720 ASTM D6026 ASTM D6027 ASTM D6519 ASTM D653 ASTM D6913 ASTM D7015 ASTM D854

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