Abstract
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.
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