EQUIPMENT AND TEST PROCEDURE FOR DETERMINING MULTIAXIAL TENSILE AND COMBINED TENSILE - COMPRESSIVE STRENGTH OF CONCRETE
A laboratory investigation was conducted to study the effect on strength of several multiaxial stress combinations related to shrinkage, temperature cracking, gravity, hydraulic loading, and foundation movement in a massive concrete structure. Nine-in. cubes were tested in a brush- loading apparatus under biaxial stress, and 2-1/8-in. diameter cores were tested in a pressure vessel in the triaxial phase. Electrical-resistance strain gages affixed to some specimens provided strain data. Results are shown graphically herein and compared with results of similar work. Based on the results of this investigation, the following conclusions appear warranted: (a) the strength of concrete in biaxial compression is at least as great as it is in uniaxial compression; (b) for the purposes of most design and analysis problems, use of an idealized interaction diagram for biaxial stresses appears feasible; (c) most design and analysis conditions involving biaxial compression plus uniaxial tension can be defined by a straight-line relationship between the points of maximum biaxial compression and uniaxial tension; and (d) unusually large induced tensile strains (more than 2000 millionths) may result from a condition of biaxial compression. /AUTHOR/
U.S. Army Waterways Experiment Station3909 Halls Ferry Road
Vicksburg, MS USA 39180-6199
- Saucier, K L
- Publication Date: 1974-3
- Features: References;
- Pagination: 62 p.
- TRT Terms: Biaxial stress; Compression; Compressive strength; Concrete structures; Equipment; Laboratory tests; Tensile strength
- Uncontrolled Terms: Biaxial compression; Uniaxial compression
- Subject Areas: Highways; Materials;
- Accession Number: 00261616
- Record Type: Publication
- Report/Paper Numbers: Tech Rept C-74-1 Final Rpt.
- Files: TRIS
- Created Date: Nov 12 1974 12:00AM