Alternate Heating And Cooling Of Mortar

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Title: Alternate Heating And Cooling Of Mortar

Author(s): E. R. Dawley

Publication: Journal Proceedings

Volume: 32

Issue: 5

Appears on pages(s): 609-620

Keywords: none

Date: 5/1/1936

Abstract:
The effect of alternate heating and cooling, in water, on the compressive strength, length and weight of 3 x 6-in. mortar cylinders is reported for seven different brands of cement and three mixes. The first few cycles caused a sharp decrease in compressive strength after which there was either no change or some increase. The lengths and weights of all specimens increased. A cement which had excellent resistance to freezing and thawing had the least resistance to heating and cooling. As the test progressed the surface of the specimens checked, then cracked, and ridges of calcium car-bonate formed on the cracks.