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Title: Laboratory characterization of Redstone Technical Test Center brick
Authors: Redstone Arsenal (Ala.)
Graham, Steven S.
Williams, Erin M.
Reed, Paul A.
Keywords: Brick Extension tests Material properties Mechanical properties Compression tests Material characterization
Issue Date: Jun-2009
Publisher: Geotechnical and Structures Laboratory (U.S.)
Engineer Research and Development Center (U.S.)
Series/Report no.: ERDC/GSL TR ; 09-17.
Description: Technical Report
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 Redstone Technical Test Center (RTTC) brick. A total of 23 mechanical property tests were successfully completed: two hydrostatic compression tests, three unconfined compression (UC) tests, ten triaxial compression (TXC) tests, three uniaxial strain tests, two uniaxial-strain-load/constant-volumetric-strain-load (UX/CV) tests, and three direct-pull (DP) tests. ln addition to the mechanical property tests, nondestructive, pulse-velocity measurements were obtained from 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 test results at six levels of confining pressure and from the results of the UC tests. The results for the DP tests were used to determine the unconfined tensile strength of RTTC brick. The RTTC brick specimens displayed tensile strengths of less than 10 percent of the unconfined compressive strength. Due to the relatively low initial dry densities of the UX/CV test specimens, the stress path data plot just below the failure surface developed from the TXC tests.
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