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Prestressed concrete is a form of concrete used in construction. It is substantially prestressed ( compressed ) during production, in a manner that strengthens it against tensile forces which will exist when in service.
A method of prestressing concrete where the tendons are tensioned after the concrete has attained a specified minimum strength or age. [1]: 50 prestress level The level of compressive stress created within a prestressed concrete member as a result of prestressing. Prestressed concrete
Naturally precompressed exterior wall of Colosseum, Rome Cable-stayed prestressed concrete bridge over Yangtze river. In structural engineering, a prestressed structure is a load-bearing structure whose overall integrity, stability and security depend, primarily, on prestressing: the intentional creation of permanent stresses in the structure for the purpose of improving its performance under ...
Concrete is a composite material composed of aggregate bonded together with a fluid cement that cures to a solid over time. Concrete is the second-most-used substance in the world after water, [1] and is the most widely used building material. [2] Its usage worldwide, ton for ton, is twice that of steel, wood, plastics, and aluminium combined. [3]
Diagram of a concrete slab of hollow core construction Photograph of a hollowcore assembly. A hollow core slab, also known as a voided slab, hollow core plank or simply a concrete plank is a precast slab of prestressed concrete typically used in the construction of floors in multi-story apartment buildings.
Nos. 12-3176, 12-3644 IN THE UNITED STATES COURT OF APPEALS FOR THE SECOND CIRCUIT CHRISTOPHER HEDGES, et al., Plaintiffs-Appellees, v. BARACK OBAMA, individually and as
Concrete can also be prestressed (reducing tensile stress) using internal steel cables (tendons), allowing for beams or slabs with a longer span than is practical with reinforced concrete alone. Inspection of existing concrete structures can be non-destructive if carried out with equipment such as a Schmidt hammer , which is sometimes used to ...
The J. Paul Getty Museum's priceless collection of artwork, which includes paintings by Van Gogh, Rembrandt, Monet and Degas, once again found itself in the path of destruction as the Palisades ...