Dimensional changes of masonry in relation to soundness of bricks and mortars

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TypeArticle
Proceedings titleASTM Special Technical Publication
ConferenceSymposium on Masonry Testing: 28 June 1962, New York, N.Y., U.S.A.
ISSN0066-0558
Issue320
Pages93106; # of pages: 14
Subjectmasonry construction; brickwork; clay bricks; concrete construction; expansion; shrinkage; shrinkage cracking; Brick; Mortar; Masonry; maconnerie; maconnerie de brique; brique en terre cuite; construction en béton; dilatation; rétrait ( alteration); faiencage
AbstractResults obtained in this study indicate that the amount of expansion of masonry mortars, when autoclaved, does not provide a useful means of assessing the behavior of mortar under natural conditions of aging. The latter varies with the relative humidity of the air in which the mortar is stored. Factors affecting the amount of autoclave expansion of mortars have been reviewed; and composition of the mortar is important in this regard. Considerable change may take place in the amount of autoclave expansion of mortar bars as they age, but the extent of change depends on the relative humidity of the air in which they are stored. The problem of establishing limits of movements of masonry to ensure freedom from cracking or bulging has been discussed briefly. No simple measurement of the length changes of individual materials can provide a solution, however, because many other factors influence the results. Not only is the amount of movement of the masonry important, but there is a strong possibility that the rate of dimensional change also has its effect. Conditions of service and the design of a structure are undoubtedly important as well.
Publication date
LanguageEnglish
AffiliationNRC Institute for Research in Construction; National Research Council Canada
Peer reviewedNo
IdentifierDBR-RP-191
NRC number6952
767
NPARC number20337859
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Record identifier4149e281-5bc1-4d7a-ae62-6bdf9b103684
Record created2012-07-19
Record modified2016-05-09
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