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The effect of unit water absorption on long-term movements of masonry

Forth, J. P. and Brooks, J. J. and Tapsir, Siti Hamisah (2000) The effect of unit water absorption on long-term movements of masonry. Cement and concrete composites , 22 (4). pp. 273-280. ISSN 0958-9465

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Abstract

Long-term movements in masonry can be predicted by composite modelling, however, the accuracy of prediction is reduced if the unbonded brick and mortar phases do not reflect the behaviour of the bonded components. It is apparent that the water absorbed by the unit soon after laying produces changes in the behaviour of the bonded components of the masonry especially of the mortar joints, which have reduced creep and shrinkage. This paper presents a study of the transfer of moisture between the brick and mortar components from 30 min after laying of bricks to 120 days. Subsequently, unit water absorption modification factors are developed which improved the accuracy of predicting creep and moisture movement strain of masonry by composite models to within 10% of the measured values

Item Type:Article
Uncontrolled Keywords:Masonry; Clay brick brickwork; Calcium silicate brickwork; Concrete blockwork; Moisture expansion; Shrinkage; Creep; Composite models
Subjects:T Technology > TA Engineering (General). Civil engineering (General)
Divisions:Civil Engineering
ID Code:2521
Deposited By: Ms Zalinda Shuratman
Deposited On:07 May 2007 00:15
Last Modified:01 Jun 2010 03:03

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