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Agoes Soehardjono, M. D.
- Controlling the Crack Width of Precast Deck Slab Composite Concrete Structure
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Authors
Affiliations
1 Department of Civil Engineering, Brawijaya University, State Polytechnic of Malang, East Java 65145, ID
1 Department of Civil Engineering, Brawijaya University, State Polytechnic of Malang, East Java 65145, ID
Source
International Journal of Civil Engineering Research, Vol 4, No 1 (2013), Pagination: 1-13Abstract
Inspection of crack width prediction procedures proposed by various investigators indicates that each formula contains a different set of variables. A literature review also suggests that there is no general agreement among various investigators on the relative significance of different variables affecting the crack width, despite the large number of experimental work carried out during the past few decades. An analytical method is developed to determine the concrete stress distribution near flexural cracks in reinforced concrete one-way slabs and used to investigate the effects of various variables on the spacing and width of cracks. The formula is developed using a large number of curvature values calculated from the concrete and steel strains at various sections between adjacent cracks for a number of composite precast deck slabs. The present method of incorporating the tension stiffening effect is verified by comparing calculated fracture mechanic and those measured by other investigators. The curvature values at sections between adjacent cracks are calculated using an empirical formula. Development of this formula is based on the curvature values calculated using the concrete and steel strains at various sections between successive cracks, for a number of composite precast deck slabs. Using the curvature values evaluated by the proposed formula, short-term deflections were determined for a large number of flexural members and the results were compared with those measured by other investigators. This comparison indicated that the present method of incorporating the tension stiffening effect in fracture mechanic calculations is acceptable.Keywords
Precast Deck Slab, Crack Width, Composite
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