Please use this identifier to cite or link to this item:
|Title:||Investigation of tensile testing of compacted soils|
|Authors:||United States. Assistant Secretary of the Army (R & D)|
Al-Hussaini, Mosaid M.
Townsend, Frank C.
Hollow cylinder tests
Unconfined compression tests
|Publisher:||Soils and Pavements Laboratory (U.S.)|
Engineer Research and Development Center (U.S.)
Abstract: The investigation reported herein describes the development of a hollow cylinder testing device and an indirect tensile testing device and the feasibility of using this equipment for determining the tensile properties of compacted cohesive soils. Hollow cylinder, indirect tensile, and double punch tests were conducted on compacted specimens of Vicksburg buckshot clay (CH), Vicksburg lean clay (CL), and a sandy clay mixture (SC) from DeGray Dam. Unconfined compression tests were also conducted to provide comparative compressive properties of the materials. The test results showed that hollow cylinder tests produce the highest measured tensile strengths of comparable specimens, followed in decreasing order by indirect tensile and double punch tests, and that tensile strength increases as the plasticity of the soil increases. Tensile modulus E𝗍 value s determined by hollow cylinder tests are about five times as great as tensile modulus values determined by indirect tensile tests. The ratio of E𝗍 values to compressional modulus E𝖼 values, as determined by hollow cylinder and unconfined compression tests, ranges from 2.6 to 4.4. On the other hand, approximately equal Poisson's ratio values were measured by hollow cylinder and unconfined compression tests. For the techniques used, the indirect tensile test failed to yield accurate Poisson's ratio values. Based upon the results of this experimental program, the hollow cylinder test is judged to provide a method for measuring tensile properties of soils that is superior to other conventional methods used for brittle materials.
|Rights:||Approved for public release; distribution is unlimited.|
|Appears in Collections:||Miscellaneous Paper|
Files in This Item:
|MP-S-74-10.pdf||8.23 MB||Adobe PDF|