Accession Number:

ADA055414

Title:

Ultimate Strength of Fiber-Reinforced Concrete under Cyclic, Flexural Loading.

Descriptive Note:

Final rept.,

Corporate Author:

ARMY ENGINEER WATERWAYS EXPERIMENT STATION VICKSBURG MISS

Personal Author(s):

• O'Neil,Edward F.

Report Date:

1978-05-01

Pagination or Media Count:

25.0

Abstract:

Cyclic flexural fatigue tests were conducted on 6- by 6- by 36-in. fiber-reinforced concrete beams containing 0.5-in. and 1.0-in. steel fibers to determine the change in ultimate flexural strength under fatigue loading. The beams were cycled at 3 Hz until failure occurred or 2 million cycles of load terminated the tests. The beams with 0.5-in. fibers produced a smaller change 45.22 percent in ultimate flexural strength than the beams containing 1.0-in. fibers 49.68 percent. The method of failure of the beams was by a gradual breakage of the bond between the steel and paste after the development of a crack in the concrete matrix, resulting in pullout of the fibers from the matrix. Author

Descriptors:

• *LOADS(FORCES)
• *CONCRETE
• *FLEXURAL STRENGTH
• *FIBER REINFORCEMENT
• BEAMS(STRUCTURAL)
• MATRIX MATERIALS
• STEEL
• ENDURANCE(GENERAL)
• STATIC TESTS
• FATIGUE TESTS(MECHANICS)
• COMPRESSIVE PROPERTIES
• CYCLIC TESTS

Subject Categories:

• Ceramics, Refractories and Glass
• Laminates and Composite Materials
• Mechanics

Distribution Statement:

APPROVED FOR PUBLIC RELEASE