SEDL / STP / STP897-EB / STP36391S

Chemical Shrinkage and Differential Sorptions in Mixtures of Portland Cement and Blast-Furnace Slag

Mills, RH
Professor, University of Toronto, Ont.

Pages: 13    Published: Jan 1986

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Abstract

The relationship between chemical shrinkage, expressed as volume per unit mass of anhydrous cementing material, and chemically bound water varies over a narrow range with the ratio of portland cement (PC) to blast-furnace slag (BFS). Chemical shrinkage is easily measured and affords an easily executed nondestructive measure of quality for cements made with mixtures of PC and BFS.

The difference between the pore space occupied by water and by kerosene expressed as a fraction of water-filled space is a measure of the volume proportion of hydrate material and is related to relative shrinkage and creep.