5837-22 - Transverse joints and longitudinal joints in...

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Transverse joints and longitudinal joints in concrete pavements, and cracks in concrete and asphalt pavements need to be properly sealed for the following reasons: 1. To prevent the infiltration of incompressible materials in the joints or cracks, which can cause blowup or deterioration of the joints or cracks. 2. To reduce the infiltration of water through the joints or cracks, which can cause erosion of the subbase or subgrade. Joints and cracks with deteriorated sealants need to be cleaned and resealed for the same reasons as stated above.
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Pumping on concrete pavement caused by water intrusion at the longitudinal joint between the shoulder and traffic lane Spalling caused by infiltration of incompressibles at the joint
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Types of Sealants: 1. Field Poured Sealants – Self Leveling Hot Poured Cold Poured 2. Preformed Compression Seals 3. Field Poured Sealants – Non-self Leveling Factors affecting the performance of sealants: 1. Joint movement - The working width of the sealant must be equal to or greater than the range of the opening of the
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5837-22 - Transverse joints and longitudinal joints in...

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