Construction technology of waterproof, plugging and water leakage treatment in factory building
A, the basement exterior wall, roof, post-cast strip leakage treatment process
1, surface treatment method: surface treatment method: firstly, brush the concrete surface with a steel wire brush to remove the dirt attached to the surface, rinse it with water, after drying, fill the surface defects of concrete with epoxy mastic and latex cement, and finally brush it with selected materials.
2. Grouting method: Grouting method is to use all kinds of resin grout, cement grout or polymer cement grout to pour into the deep part of cracks under a certain pressure, so as to achieve the purpose of restoring structural integrity, durability and waterproofing.
3. Filling method: When there is water, use quick-setting admixture or quick-setting patented cement (inorganic or organic) instead of portland cement. For dry and thin open joints, organic polymer-based caulking and putty materials can be used, and lead fibers are often used together with traditional caulking materials.
4. Grouting method: suitable for local treatment of expansion joints near the water surface; Grouting is generally carried out from low to high. When the grouting is discharged from the front hole, the grouting is completed in the back hole.
Second, the basement raft concrete local cracks and leakage treatment technology
1, crack treatment
2, local leakage treatment process
Three, the basement wall pipe leakage treatment process
1, Treatment of concrete leakage under pipe. Dig the leaking concrete under the pipe to a depth of 250 mm If the water pressure is not high, plug it with quick-hardening cement mortar.
2. When the embedded diameter is larger (more than 800mm in diameter), a pouring vibrating vent hole is opened at the bottom of the pipe. Concrete can be added from the hole, and inserted into the hole with a plug-in vibrator and vibrated, forcing the air to discharge and secrete water, so as to make the concrete at the bottom of the pipe compact.
3. Clean the outside of the embedded pipe, and assign special personnel to be responsible for it: stick BW water stop, tear off the release paper and stick it on the outer pipe by its own viscosity. Same position as the water stop ring. When pouring concrete, there should be someone who's in charge to ensure the accurate position.
Four, roof leakage treatment
Treatment of roof leakage: drilling and grouting are strictly prohibited. The principle of treatment is to completely solve the leakage. It is suggested to find the leakage point, dismantle the roof and find the reason from the waterproof layer.
Five, the external wall leakage treatment
1. The main types of external wall seepage are: external wall seepage caused by filler wall, external painting construction quality problems, improper repair of reserved holes, joint seepage of external wall windows, etc.
2. Judgment of the severity of the leakage problem
3. Common treatment methods of external wall leakage
Step 4 glue
Six, toilet leakage treatment measures
1, accurately find the leaking part.
2. When there is obvious water accumulation on the ground after the urinal is used, the water leakage at the joint between the urinal and the drain pipe should be considered first. At this point, the ground at the water inlet of the urinal can be gently removed to check whether the rubber bowl is in good condition. If damaged, it must be replaced immediately.
3. Flooding effect of the floor drain with accumulated water is not good. When there is frequent water accumulation, the ground around the floor drain should be chiseled and the slope should be found again to make the floor drain.
4, wear floor riser should be embedded casing, and 20mm higher than the floor, casing external use GK rapid setting plugging agent tightly, the gap between casing and riser with elastic cement waterproof coating.
5. The waterproof layer of toilet and toilet is the key to waterproof and leak-proof.
Waterproof and plugging measures for factory buildings
1. In order to ensure that the floor water does not flow into the reserved hole before the pipeline of the reserved hole is installed, a water retaining sill is set around the reserved hole for the room where construction water may exist. After the installation is completed, the reserved holes should be blocked immediately according to the requirements of design drawings.
2. Before the roof tube well is closed, the formwork shall be covered with plastic sheets for sloping. Water retaining fence should be set at the entrance of elevator shaft and pipe shaft. If there is water at the bottom of the well, it should be drained to the outdoor temporary road drainage ditch with a water pump in time, and then discharged into the collecting well through the drainage ditch, and the water in the collecting well will be uniformly discharged into the municipal drainage pipe through the water pump.
3. There is organized drainage on the roof, and rainwater enters the rainwater pipe through the rainwater bucket and is discharged to the drainage ditch. During the construction process, water accumulation on the roof is prohibited in the waterproof and plugging construction scheme of Wanda e-commerce project.
4, indoor sewage, wastewater confluence. Domestic sewage is discharged into municipal pipelines after being treated by septic tanks. The oily wastewater from the kitchen is discharged after being treated by the grease trap.