With the improvement of people's living standards, the development of the construction industry is now leaps and bounds. When it comes to construction, what has to be said is the waterproof construction scheme . For those who have an understanding of the construction of the building, the waterproof construction plan must be More familiar, today's decoration home decoration network Xiaobian for those who built the house Xiaobai introduced the relevant content of the waterproof project construction program, quickly and Xiaobian together to find out!
First, the preliminary construction steps
a. Looking for cracks: For the wet base layer, first clean the water, wait until the base layer is completely cleaned, when the surface is slightly dry, carefully look for cracks, mark with the color pen or chalk along the crack: for the dry base layer, use the air pump or blower after cleaning Blow off the surface dust.
b. Drilling: According to the thickness of the concrete structure, the distance from the crack is about 150~350mm, and the holes are crossed along the crack direction. The hole spacing should be determined according to the actual situation of the site. The principle of two-hole grouting can meet at the crack. Generally, the hole spacing should be about 200mm at the beginning: the size of the hole should be determined according to the matching water-stopping needle. A 13mm drill bit is used. The hole and crack sections should intersect at 45 to 60 degrees and cross over 1/3 of the middle of the bottom plate.
c. Buried water needle: The water stop needle is a matching component, the embedding should be tightened, and the rubber part and the hole wall of the needle should be dried before use, otherwise it will cause slippage when tightening.
Second, the problems should be paid attention to in the early stage of construction
a. In the search for crack money, the crack should be analyzed first, and the core should be taken according to the crack width and length to determine the depth development law of the crack. If it is not through the crack and the depth is shallow, it can be surface treated.
b. Finding cracks is a cumbersome and meticulous work. If the surface is not suitable for drying, it can be dried with a blowtorch. The cracks contain water and can be immediately found to improve work efficiency. Every construction block must be ensured.
Third, crack repair
a. The infusion slurry should start from the first needle (the structure façade is poured from bottom to top). When the slurry emerges from the crack, it should stop immediately, move into the second one and continue to infuse, and proceed forward. During the filling process, if the slurry is full of adjacent needle positions, it should be replenished at this position and re-grouted. In this way, the first grouting of the entire crack is considered to be over.
b. In order to fully fill the crack with slurry, secondary grouting should be carried out. The second infusion is separated from the first time by a period of time, but must be completed before the slurry solidifies. If the slurry still does not heal after two times, it should be re-drilled at this position.
Fourth, the problem should be paid attention to when grouting
a. When a needle has not been ejected from the crack after a long period of infusion (after 5 minutes), the perfusion interval should be stopped for a period of time.
b. Infusion should be closely watched the pressure gauge of the filling machine. If the pressure exceeds the rated pressure (above 350KG), it should be stopped after the shutdown. If the pressure is still high, check whether the borehole completely intersects the crack.
c. Polyurethane is a water-swellable material. Wear protective equipment such as gloves and goggles when working. If it is not splashed into the eyes, it should be taken to the hospital immediately.
Fifth, surface cleaning and equipment maintenance
a. After the slurry has set, the surface should be treated in time.
b. If the perfusion machine is used continuously for no more than 10 hours, if it stops working for 30 minutes in the middle, it should be cleaned in time, and special cleaning agents can be used for cleaning.
c. The filling machine should be inspected frequently before use, and abnormalities should be found and repaired immediately to prevent accidents.
The above content is all about the waterproof construction project. After reading the above description, do you have a certain understanding of the waterproof construction plan? Well, the content of this issue is over here, I want to To learn more about decoration, please pay attention to the decoration home network!
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