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|Title:||Laboratory characterization of type S mortar|
|Authors:||Williams, Erin M.|
Akers, Stephen A.
Reed, Paul A.
|Keywords:||Compression tests Extension tests Material characterization Mechanical properties Mortar Type S mortar Material properties|
|Publisher:||Geotechnical and Structures Laboratory (U.S.)|
Engineer Research and Development Center (U.S.)
|Series/Report no.:||ERDC/GSL TR ; 08-10.|
Abstract: Personnel of the Geotechnical and Structures Laboratory, U.S. Army Engineer Research and Development Center, conducted a laboratory investigation to characterize the strength and constitutive property behavior of type S mortar. A total of 44 mechanical property tests were successfully completed: two hydrostatic compression tests, four unconfined compression (UC) tests, 18 triaxial compression (TXC) tests, three direct pull tests, six reduced triaxial extension tests, two uniaxial strain tests, four uniaxial strain load/biaxial strain unload tests, and five uniaxial strain load/constant volume strain loading (UX/CV) tests. In addition to the mechanical property tests, nondestructive pulse-velocity measurements were performed on each specimen. The TXC tests exhibited a continuous increase in maximum principal stress difference with increasing confining stress. A compression failure surface was developed from the TXC results at nine levels of confining pressure and from the results of the UC tests. The results for the DP and RTE tests were used to look at the tensile strength of type S mortar and develop an extension failure surface. Type S mortar can withstand more deviatoric stress in compression than extension before failw·e occurs. During UX/BX tests, the test specimens recovered approximately one-third of their peak compressive volumetric strain. During most of the CV loading the material follow closely to the failure surface developed from the TXC tests, therefore validating the compression failure surface.
|Rights:||Approved for public release; distribution is unlimited.|
|Appears in Collections:||Technical Report|
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|ERDC-GSL-TR-08-10.pdf||13.99 MB||Adobe PDF|