Pay for satisfaction! Construction process of waterproof and leakage-proof roof in the bathroom of Tianhe District: waterproof and leakage-proof construction of various types of roof waterproofing works – the coping is located at the superelevation of the roof, directly exposed in the natural situation, greatly affected by the weather, and greatly affected by the temperature difference of all longitudinal walls, structural stress deformation, and the drying shrinkage deformation of wall concrete and mortar, so even the reinforced concrete coping, its transverse gap is not prevented.
Therefore, during the construction of the post-cast strip, both ends of the post-cast joint shall be continuously strengthened with waterproof treatment, reward and punishment.
In order to overcome the cracking of the building caused by the temperature difference elasticity or settlement of the building, the deformation joint is repeatedly equipped; When not equipped, the post-cast strip technology is selected.
When the underground waterproofing is flexible upstream waterproofing and has a pile base, the flexible waterproofing can only be disconnected from the pile, and the pile head will form a seepage channel.
If the material is not selected properly, it may form the layering of the coping and parapet.
The rainwater flows into the wall along the gap and leaks into the room around the waterproof layer, so the coping must be made of flexible material reinforcement layer.
The size of the seam changes with time, so it is necessary to embed high-performance elastic sealing materials in the seam, and the appearance is covered with paint and matrix.
The division joint includes full division, half division (clamping joint), embedded plastic mold strip division, etc.
In general, strengthen the appearance treatment, reward and punishment on the upstream surface, or bury the waterstop in the middle of the joint or shorten the rubber waterstop in case of water.
Therefore, the pile head is a channel for leakage from the underground chamber, so it is necessary to deal with the rewards and punishment according to Figure 1.
Most of the cracks will open obviously within 3 to 5 years.
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At that time, only polymer cement-based coating and polymer cement mortar are generally used for waterproofing here; The other is to make the waterproof layer under the coping and select coiled material to paste or paint.
When the pile concrete is poured to the pile head, there is a lot of mortar and a lot of fine holes.
Reinforced concrete will be capped, and there will be one crack open within 5 to 8 meters, and unreinforced concrete will be distributed with one crack within 1 meter.
Generally, the reinforcing layer is one cloth and three coats.
Because the shape of the border ditch and the bottom layer of the pit are messy, the waterproof coating should be used instead of coiled material.
At the intersection of the ditch and pit, it is extremely easy to crack.
Generally, it is used under the coping.
When the construction reasons and technical requirements cannot meet the construction requirements of the post-cast strip, the gap between the post-cast strip and the original concrete has been shortened repeatedly, resulting in water leakage.
At the intersection of the air, the ditch and the pit, and at the groove with the cover plate, the quality problems often occur due to the disordered shape, so the reinforcement layer should be disposed at these parts for reward and punishment.
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When the pile head is chiseled, the concrete is used for vibration, and there are many fine cracks.
In order to prevent the rigid waterproof layer or leveling layer from drying shrinkage and cracking caused by temperature difference, the division joint is initially equipped.
The effect is to gather the deformation of the block in the joint.
