Masonry Bond Strength and the Effects of Supplementary Cementitious Materials

The paper presents the results of two investigations into flexural tensile bond strength of masonry using a wide range of materials. The materials include clay, concrete and calcium silicate bricks; general purpose, slag blend, fly ash blend and masonry cements; and mortar mixes covering the commonl...

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Bibliographic Details
Published in:Australian journal of structural engineering 2008-01, Vol.8 (2), p.101-115
Main Authors: Lawrence, S.J., Sugo, H.O., Page, A.W.
Format: Article
Language:English
Subjects:
age
blended cements
bond strength
Cement
Concrete
curing conditions
Masonry
masonry cement
Masonry Structures Standard (AS 3700)
Mortar
mortars
properties
Testing
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Summary:The paper presents the results of two investigations into flexural tensile bond strength of masonry using a wide range of materials. The materials include clay, concrete and calcium silicate bricks; general purpose, slag blend, fly ash blend and masonry cements; and mortar mixes covering the commonly used range, with and without water thickener admixture. Tests were carried out at ages from 7 to 730 days (2 years). The bond wrench technique was used to test the individual joints of five-course stack-bonded masonry prisms. Ten replicates of each set of conditions were tested, giving a total of 3120 measurements in the first study and 1200 measurements in the second study. Significant results and interactions are discussed and illustrated. The implications for masonry design and AS 3700 are outlined.
ISSN:1328-7982
2204-2261
DOI:10.1080/13287982.2008.11464991