EPOXY INJECTION (Suntik Beton) - PT. Qinar Raya Mandiri

Damage to concrete pavement structures in buildings is generally caused by several factors, including: • excessive loading • ground subsidence • water-cement ratio • poor bagasting process • other natural stress processes This differs from "surface cracks," which generally occur due to improper curing or drying. Epoxy injection is a method of injecting liquid epoxy into cracks in concrete pavement with a maximum width of 3 mm and a depth exceeding 50% of the total concrete thickness. Its function is not only to restore the pavement's original strength but also to prevent water penetration through previously cracked gaps, which could cause corrosion of the concrete reinforcement. Generally, injection repairs are used for repairing • concrete floor slabs, • aprons, • beams, • columns, • girders, • concrete piles, and so on, both horizontally and vertically. This type of repair can be performed on both dry concrete structures and those that have experienced moisture due to water penetration. The only difference lies in the material selection. To determine the extent of the crack damage, a coring or UPV system is required. UPV, or Ultrasonic Pulse Velocity, is a non-destructive in-situ ultrasonic pulse velocity test used to assess the quality of concrete and natural rock. In this test, the strength and quality of concrete or rock are assessed by measuring the velocity of ultrasonic pulses passing through a concrete structure or natural rock formation. Coring, on the other hand, involves drilling into the pavement to take samples to determine the depth of the crack. This method allows for direct observation.