Have you ever encountered difficulties in pouring and vibrating concrete for large-area metal plate embedded installation equipment? Is it found that it is not easy to be dense, and cracks are easy to appear at the bottom of the slab when the concrete shrinks plastically? Don't worry, we have a solution.

Opening pouring, vibration and exhaust.

This problem can be easily solved by opening a few keyhole on the metal plate. Before the initial setting of structural concrete, dive into these holes and vibrate the concrete. Ensure that the concrete in the hole is slightly higher than the surface of the metal plate, and then smooth it after the initial setting of the concrete. After the concrete reaches the design strength, these holes are sealed by welding.

Dispose of exposed bolts

The two ends of the bolt passing through the outer surface of the waterproof structure may become leakage channels. In order to solve this problem, a water stop ring can be welded in the middle of these bolts, or a groove with a depth of 20mm and a width of 20mm can be left around the bolts facing the water surface, and then waterproof sealing paste can be embedded to block the seepage passage.

Handling bolts with one exposed end

If these bolts are embedded in the protective layer whose other end is not less than 50mm thick from the wall or bottom of waterproof structure, they can be treated as ordinary embedded screws. However, if the protective layer is less than 50mm, the water stop ring needs to be welded.

Local thickening of reserved anchor holes

Don't forget to leave at least 150mm thick concrete protective layer at the bottom of the reserved anchor hole. If the thickness is less than 150mm, remember to take local thickening measures to make up for it!