Fatigue Behavior of Air-Entrained Concrete: Phase II, HR-197, 1979

(1979) Fatigue Behavior of Air-Entrained Concrete: Phase II, HR-197, 1979. Transportation, Department of

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Abstract

When a material fails under a number of repeated loads, each smaller than the ultimate static strength, a fatigue failure is said to have taken place. Many studies have been made to characterize the fatigue behavior of various engineering materials. The results of some of these studies have proved invaluable in the evaluation and prediction of the fatigue strength of structural materials. Considerable time and effort have gone into the evaluation of the fatigue behavior of metals. These early studies were motivated by practical considerations: the first fatigue tests were performed on materials that had been observed to fail after repeated loading of a magnitude less than that required for failure under the application of a single load. Mine-hoist chains (1829), railway axles (1852), and steam engine parts were among the first structural components to be recognized as exhibiting fatigue behavior. Since concrete is usually subjected to static loading rather than cyclic loading, need for knowledge of the fatigue behavior of concrete has lagged behind that of metals. One notable exception to this, however, is in the area of highway and airfield pavement design. Due to the fact that the fatigue behavior of concrete must be understood in the design of pavements and reinforced concrete bridges, highway engineers have provided the motivation for concrete fatigue studies since the 1920s.

Item Type: Departmental Report
Keywords: Air entraining cement, Coarse aggregates, Failure, Fatigue tests, Fine aggregates, Pavements, Rigid Pavements, Structural analysis
Subjects: Transportation > Pavements
Transportation
Transportation > Roads and highways
Transportation > Research
Transportation > Research > Concrete
Transportation > Design and Construction
ID Code: 17333
Deposited By: Iowa DOT Library
Deposited On: 02 Jul 2014 18:34
Last Modified: 05 Feb 2015 19:53
URI: http://publications.iowa.gov/id/eprint/17333