Waterproof characteristics of roof engineering



1. The temperature difference is large, high temperature in the day, low temperature at night, thermal expansion and cold contraction cycle, the structure is easy to crack.



2. Under the action of additional stress, the foundation of reinforced concrete structure is uneven settlement caused by compaction, and the floor structure cracks and leaks.



3. The alkali, aggregate reaction, steel corrosion, chloride ion influence and harmful material erosion of reinforced concrete floor can be carried out under the condition of water. The generation and development of leakage cracks will have adverse effects on the bearing capacity and durability of building structures.



Design principle of waterproof reinforcement construction scheme



1. The inverted waterproof design ensures the effectiveness of waterproofing. The reactive adhesive membrane which can react with concrete to seal the adhesive layer is selected. The sealing waterproof does not leak water, and the safety and reliability are greatly improved.



2. Rigid and flexible, waterproof layer should match with the change characteristics of the base.



3. The external waterproof can achieve the effect of flexibility and sealing: to protect the concrete structure from water damage and erosion.



4. Flexibility: dual creep crack resistance to prevent rigid "cracking" leakage.



5. Sealing: the roof joints, such as cracks, wall root corners, drainage pipes and so on, are effectively sealed with waterproof sealing paste to prevent the whole system from failure due to "water channeling".



Structural drawing of floor waterproof and thermal insulation



Due to the uneven settlement of the floor caused by the compaction of the foundation under the additional stress, the floor structure is cracked and leaking, and the cracks are reinforced by non curing rubber waterproof. The non curing has good flexibility and is suitable for the deformation of the base. The flexible waterproof layer is formed by combining the flexible crack with the base surface through the physical adsorption, so as to eliminate the stress caused by the change of the base and make the flexible waterproof The layer has enough tensile crack strength and can effectively resist the damage of external stress.