Shrinkage and Cracking ofCement Mortars Used for Exterior Coating

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Title: Shrinkage and Cracking ofCement Mortars Used for Exterior Coating

Author(s): Ori lshai and Nathan Bavli

Publication: Journal Proceedings

Volume: 63

Issue: 11

Appears on pages(s): 1247-1264

Keywords: absorption, cement mortar, coating, compressive strength, cracking, curing, curing agent, mortar coating, quarry sand, research, sea sand, shrinkage, steam curing, water curing.

Date: 11/1/1966

Abstract:
Deals mainly with the effect of curing and preliminary treatment on the relevant properties of mortar coatings, viz., strength, absorption, and, in particular, shrinkage, and cracking resistance. Results of the laboratory test series indicate the superiority of steam curing over water curing as regards shrinkage and cracking time. Other results point up the advantage of efficient mix compaction, using sand of high fineness modulus, and the effect of sealing as appropriate means for producing more cracking resistant mortar coatings. Analysis of the results confirm the expected correlation between increased cracking resistance, on the one hand, and higher strength and lower free shrinkage, on the other.