Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Effect of Stress Level on Creep and Creep Recovery of Lean Mass Concrete
A test program was conducted to investigate the relationship between the intensity of sustained load and the creep of a typical mass concrete with low cement content similar to that used in concrete dams. Sealed mass concrete cylinders were loaded in compression at ages of 28 and 90 days; the loads were sustained for over a year and creep was measured periodically. Creep of concrete loaded at 28 days is proportional to sustained stress less than 15% of the 28-day compressive strength. Increases in creep deformations are noted at stresses greater than 15%. Concrete loaded at 90 days exhibits creep proportional to sustained stress to 22% of the 90-day compressive strength. Creep recoveries of sealed concrete specimens unloaded after 400 days of continuous compression are proportional to sustained stress, regardless of the concrete age at load application. (Author)
Effect of Stress Level on Creep and Creep Recovery of Lean Mass Concrete
A test program was conducted to investigate the relationship between the intensity of sustained load and the creep of a typical mass concrete with low cement content similar to that used in concrete dams. Sealed mass concrete cylinders were loaded in compression at ages of 28 and 90 days; the loads were sustained for over a year and creep was measured periodically. Creep of concrete loaded at 28 days is proportional to sustained stress less than 15% of the 28-day compressive strength. Increases in creep deformations are noted at stresses greater than 15%. Concrete loaded at 90 days exhibits creep proportional to sustained stress to 22% of the 90-day compressive strength. Creep recoveries of sealed concrete specimens unloaded after 400 days of continuous compression are proportional to sustained stress, regardless of the concrete age at load application. (Author)
Effect of Stress Level on Creep and Creep Recovery of Lean Mass Concrete
K. B. Hickey (Autor:in)
1969
16 pages
Report
Keine Angabe
Englisch
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