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Prestress loss of post-tensioned clay diaphragm and fin brickwork

Tapsir, Siti Hamisab (1994) Prestress loss of post-tensioned clay diaphragm and fin brickwork. Jurnal Kejuruteraan Awam, 7 (2). pp. 12-18. ISSN 0128-0147

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Abstract

Unlike calcium silicate and concrete block masonry which undergo shrinkage with time, clay brickwork has been known to expand instead. Expansion of brick units in prestressed masonry will cause an increase in the prestressing force instead of prestress loss. However, not all clay brickwork expand with time; higher strength clay units tend to undergo shrinkage with time. The main objective of this paper is to present experimental data obtained for prestress loss in post-tensioned high strength clay diaphragm and fin brickwork. The main objective of this paper is to present experimental data obtained for prestress loss in posttensioned high strength clay diaphragm and fin brickwork. The brickwork were built from clmisB clay engineering brick with compressive strength of 103 MPa with designation (ii) mortar. The tests which involve monitoring prestress loss, creep and shrinkage of clay sections were carried out over a period of 120 days. Usiog the 120-day experimental data, the predicted long-term prestress loss is 20%

Item Type:Article
Uncontrolled Keywords:prestress loss, brickwork
Subjects:T Technology > TA Engineering (General). Civil engineering (General)
Divisions:Civil Engineering
ID Code:27859
Deposited By: Nurul Asilah Mahmood
Deposited On:10 Aug 2012 03:39
Last Modified:10 Aug 2012 03:39

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