Transcription of Cracks and Crack Control in Concrete Structures
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Cracks and Crack Control in Concrete Structures
Special ReportCracks and Crack Controlin Concrete StructuresFritz LeonhardtProfessor EngineerStuttgart, FRGThe material presented in this paper isbased on more than 30 years of re-search, observations and experienceconcerning causes, Control , and conse-quences of cracking in Concrete struc-tures. This extensive background washelpful in the preparation of this paperwhich deals with questions of presence of cracking does notnecessarily indicate deficiency instrength or serviceability of concretestructures. While currently available de-sign code provisions lead to reasonablecontrol of cracking, additional controlcan be achieved by understanding thebasic causes and mechanisms of Crack -Note: This paper is a revised and updated version ofan article originally published in the Proceedings ofthe International Association for Bridge and St
Concrete can crack due to a number of causes. Some of the most significant causes are discussed in detail. Tensile Strength of Concrete The tensile strength of concrete is a widely scattering quantity. Cracking oc-curs when tensile stresses exceed the tensile strength of concrete. Therefore, to control concrete cracking, the tensile
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