ASTM D6243/D6243M-16
采用直接剪切方法测定土工合成粘土衬里内层和界面剪切强度的标准试验方法

Standard Test Method for Determining the Internal and Interface Shear Strength of Geosynthetic Clay Liner by the Direct Shear Method

被代替

ASTM D6243/D6243M-16 发布历史

ASTM D6243/D6243M-16由美国材料与试验协会 US-ASTM 发布于 2016。

ASTM D6243/D6243M-16在国际标准分类中归属于: 19.060 机械试验。

ASTM D6243/D6243M-16 发布之时，引用了标准

• ASTM D1557 用改良作用力（56000 ft-lbf/ft³（2700 kN-m/m³）测定土壤实验室压实特性的标准试验方法
• ASTM D2435/D2435M 使用增量载荷的土壤一维固结性能的标准测试方法
• ASTM D2487 工程用土壤分类的标准试验方法
• ASTM D3080/D3080M 在固定排水条件下土壤直接剪切的标准试验方法
• 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 D4439 土工合成材料的标准术语
• ASTM D5321/D5321M 通过直接剪切测定土壤 - 土工合成 - 土工合成界面剪切强度的标准试验方法
• ASTM D6072/D6072M 获取土工合成粘土衬垫样品的标准实施规程
• 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 D698 采用标准作用力 (12 400 ft-lbf/ft3 (600 kN-m/m3)) 测定土壤实验室压实特性的标准试验方法

ASTM D6243/D6243M-16的历代版本如下：

• 2020年 ASTM D6243/D6243M-20 通过直接剪切法测定土工合成粘土衬里的内部和界面剪切强度的标准试验方法
• 2016年 ASTM D6243/D6243M-16 采用直接剪切方法测定土工合成粘土衬里内层和界面剪切强度的标准试验方法
• 2013年 ASTM D6243/D6243M-13a 采用直接剪切方法测定土工合成粘土衬里内层和界面剪切阻力的标准试验方法
• 2013年 ASTM D6243-13 用直接剪切方法测定土工合成粘土衬里内层和界面剪切强度的标准试验方法
• 2009年 ASTM D6243-09 用直接剪切方法测定土工合成粘土衬里内层和界面剪切强度的标准试验方法
• 2008年 ASTM D6243-08 通过直接剪切法测定土工合成粘土衬里的内部和界面剪切强度的标准试验方法
• 2006年 ASTM D6243-06 用直接剪切方法测定土工合成粘土衬里内层和界面剪切强度的标准试验方法
• 1998年 ASTM D6243-98 通过直接剪切方法对土工合成粘土衬里的内部和界面剪切抗性测定的标准试验方法

5.1 The procedure described in this test method for determination of the shear resistance for the GCL or the GCL interface is intended as a performance test to provide the user with a set of design values for the test conditions examined. The test specimens and conditions, including normal stresses, are generally selected by the user.

5.2 This test method may be used for acceptance testing of commercial shipments of GCLs, but caution is advised as outlined in 5.2.1.

5.2.1 The shear resistance can be expressed only in terms of actual test conditions (see Notes 2 and 3). The determined value may be a function of the applied normal stress, material characteristics (for example, of the geosynthetic), soil properties, size of sample, moisture content, drainage conditions, displacement rate, magnitude of displacement, and other parameters.

Note 2: In the case of acceptance testing requiring the use of soil, the user must furnish the soil sample, soil parameters, and direct shear test parameters. The method of test data interpretation for purposes of acceptance should be mutually agreed to by the users of this standard.

Note 3: Testing under this test method should be performed by laboratories qualified in the direct shear testing of soils and meeting the requirements of Practice D3740, especially since the test results may depend on site-specific and test conditions.

5.2.2 This test method measures the total resistance to shear within a GCL or between a GCL and adjacent material. The total shear resistance may be a combination of sliding, rolling and interlocking of material components

5.2.3 This test method does not distinguish between individual mechanisms, which may be a function of the soil and GCL used, method of material placement and hydration, normal and shear stresses applied, means used to hold the GCL in place, rate of horizontal displacement, and other factors. Every effort should be made to identify, as closely as is practicable, the sheared area and failure mode of the specimen. Care should be taken, including close visual inspection of the specimen after testing, to ensure that the testing conditions are representative of those being investigated.

5.2.4 Information on precision between laboratories is incomplete. In cases of dispute, comparative tests to determine whether a statistical bias exists between laboratories may be advisable.

5.3 The test results can be used in the design of GCL applications, including but not limited to, the design of liners and caps for landfills, cutoffs for dams, and other hydraulic barriers.

5.4 The displacement at which peak strength and post-peak strength occurs and the shape of the shear s......

标准号

ASTM D6243/D6243M-16

发布

2016年

发布单位

美国材料与试验协会

替代标准

ASTM D6243/D6243M-20

当前最新

ASTM D6243/D6243M-20

 

 

引用标准

ASTM D1557 ASTM D2435/D2435M ASTM D2487 ASTM D3080/D3080M ASTM D3740 ASTM D4439 ASTM D5321/D5321M ASTM D6072/D6072M ASTM D653 ASTM D698

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