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What is Understanding Concrete Contraction Joints about?
Contraction joints are used in concrete to control cracking from shrinkage as the concrete dries. They allow movement in the plane of the joint while preventing other movement. If cracking is not controlled, it can occur randomly and be more severe. Contraction joints are typically located where tensile stresses are highest, such as at changes in cross-section or in long walls and slabs. They are formed by creating a vertical plane of weakness in the concrete where reinforcement is terminated on both sides.
- Author
- suryakantame
- Language
- EN