Causes and Control of Cracking in Unreinforced Mass Cncrete


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Title: Causes and Control of Cracking in Unreinforced Mass Cncrete

Author(s): Roy W. Carlson, Donald L. Houghton, and Milos Polivka

Publication: Journal Proceedings

Volume: 76

Issue: 7

Appears on pages(s): 821-838

Keywords: aggregates; cement types; compressive strength; contraction; cooling; crackiing (fracturing); drying shrinkage; heat of hydration; mass concrete; codulus of elasticity; pozzolans; restraints; stress relaxation; temperature rise (in conrete).

Date: 7/1/1979

The most common casue of cracking is restrained contraction. Principal causes of conctraction are loss of moisture (drying shrinkage) and a decrease in temperature. Ciontrol of crackiing by reducing drying shrinkage, change in temperature, and by modifying the properties of concrete is outlined.