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Drying and Shrinkage of Concrete: The Case of Massive Parts

by Paul Acker, Public Works Research Lab, France,
Marc Mamillan, Public Works Research Lab, France,
Miao Buquan, Public Works Research Lab, France,



Document Type: Proceeding Paper

Part of: Serviceability and Durability of Construction Materials

Abstract:

The natural drying of concrete induces a number of intense mechanical effects on the structures. These various effects are of importance to engineers: in the design stage (estimate of apparent strains, losses of prestress, and redistributions), then in the working out of constructive arrangements (prevention of cracking by blocked strains), and also in the choice of construction methods (staging of concreting), placement (curing) and maintenance (diagnostic and treatment of cracks). This paper presents a few results of long-term (12 years) measurements (water content and strains) made on very large concrete blocks (1 meter thick). These results demonstrate the importance of the phenomena and the need to take them into account explicitly.

Subject Headings: Construction methods | Strain | Material tests | Cracking | Concrete structures | Concrete construction | Concrete

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