DEVELOPMENT OF THE UNIVERSITY OF NEW MEXICO SOIL STRESS GAGE.
Rept. for Jul 63-Jan 66,
NEW MEXICO UNIV ALBUQUERQUE ERIC H WANG CIVIL ENGINEERING RESEARCH FACILITY
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The University of New Mexico soil stress gage is fabricated of aluminum with a modulus of approximately 10 to the 6th power psi, and weighs 2 ounces. The gage was evaluated in a series of tests which included 1 full bridge and potentiometer circuitry 2 three types of calibration hydrostatic calibration to 1,500 psi, zero-cover calibration statically in soil, and zero-cover calibration dynamically in soil and 3 burial in soil containers of two different configurations for static and dynamic testing at various depths from zero cover to 36 in. at centerline and quarter point. The UNM gage was found capable of measuring static and dynamic soil stress in a dense 20-30 Ottawa sand in field and laboratory tests up to 2,000 psi. Static measurements within or - 8 of the applied pressure and dynamic measurements of or - 10 of the applied pressure were obtained. Author
- Soil Mechanics
- Test Facilities, Equipment and Methods