Retracting joints
what are retracting joints?
EMAC® retracting joints are designed to control cracking in concrete surfaces during the curing process. As concrete loses moisture and reduces its volume, internal stresses are generated that can cause cracking. Shrinkage joints channel these stresses, guiding the formation of cracks along the joint profile, preventing uncontrolled cracking.
Main features:
- Crack control: They help guide and control the formation of cracks in concrete.
- Cost savings: Their installation eliminates the need for subsequent cutting and sealing work.
- Master screed function: They facilitate the leveling process during flooring installation.
types of retracting joints
At EMAC®, retracting joints can be classified into the following generic types:
- PVC Profiles: Designed to create a weakened point in the concrete slab, allowing cracks to form in a controlled manner along the profile.
- Control Joints: Used to guide cracking in concrete surfaces, ensuring that cracks occur in predetermined locations.
- Contraction Joints: These joints allow concrete to shrink without developing stresses that could cause uncontrolled cracking.
EMAC® offers shrinkage joints designed to control and channel cracking in concrete surfaces, ensuring structural integrity, reducing maintenance costs, and improving the final finish of the flooring.
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