Release Time:2019-03-09  Hits:

Indexed by: Journal Papers

Date of Publication: 2012-09-01

Journal: MATERIALS

Included Journals: Scopus、EI、SCIE

Volume: 5

Issue: 9

Page Number: 1698-1707

ISSN: 1996-1944

Key Words: plain concrete; freezing and thawing cycles; mechanical properties; weight loss; dynamic modulus of elasticity

Abstract: An experimental study of plain concrete specimens of water-cement ratio 0.55, subjected to 0, 15, 25, 40, 50 and 75 cycles of freeze-thaw was completed. The dynamic modulus of elasticity (DME), weight loss, compressive strength, tensile strength, flexural strength, cleavage strength and stress-strain relationships of plain concrete specimens suffering from freeze-thaw cycles were measured. The experimental results showed that the strength decreased as the freeze-thaw cycles were repeated. A concise mathematic formula between DME, weight loss, mechanical properties and number of freeze-thaw cycles was also established. The influences of freeze-thaw cycles on the DME, weight loss and mechanical properties were analyzed. The experimental results serve as a reference for the maintenance, design and life prediction of dams, hydraulic structures, offshore structures, concrete roads and bridges in cold regions.