Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Assessment and Restoration of Post-Tensioned Waffle Slabs
The use of un-bonded post-tensioned (PT) reinforcement in waffle slabs has been popular for many decades in buildings and parking structures. The use of PT reinforcement in waffle slabs greatly reduces the amount of cracking and possible leakage in the structure and also allows economical long-span construction. The boom of the construction of waffle slabs in the United States began in the 1970s. Many of these early PT structures have since been encountered in a deteriorated condition with varying degrees of damage to the PT systems. Unfortunately, not enough information is currently available for practitioners to properly analyze the condition of waffle slabs with corroded/broken PT tendons. This paper illustrates a detailed explanation of the deterioration mechanisms that affect post-tensioned waffle slabs and, more specific, addresses sheathing strand systems. A case study is presented to illustrate the detrimental effects of deterioration mechanisms on post-tensioned structures providing specific repair recommendations in order to mitigate and prevent structural related problems for un-bonded post-tensioned waffle slabs.
Assessment and Restoration of Post-Tensioned Waffle Slabs
The use of un-bonded post-tensioned (PT) reinforcement in waffle slabs has been popular for many decades in buildings and parking structures. The use of PT reinforcement in waffle slabs greatly reduces the amount of cracking and possible leakage in the structure and also allows economical long-span construction. The boom of the construction of waffle slabs in the United States began in the 1970s. Many of these early PT structures have since been encountered in a deteriorated condition with varying degrees of damage to the PT systems. Unfortunately, not enough information is currently available for practitioners to properly analyze the condition of waffle slabs with corroded/broken PT tendons. This paper illustrates a detailed explanation of the deterioration mechanisms that affect post-tensioned waffle slabs and, more specific, addresses sheathing strand systems. A case study is presented to illustrate the detrimental effects of deterioration mechanisms on post-tensioned structures providing specific repair recommendations in order to mitigate and prevent structural related problems for un-bonded post-tensioned waffle slabs.
Assessment and Restoration of Post-Tensioned Waffle Slabs
Jimenez, Gabriel A. (Autor:in)
Structures Congress 2010 ; 2010 ; Orlando, Florida, United States
Structures Congress 2010 ; 1074-1081
18.05.2010
Aufsatz (Konferenz)
Elektronische Ressource
Englisch
Assessment and Restoration of Post-Tensioned Waffle Slabs
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