Engineer Bui Hoang Chung said: Wall surfaces are susceptible to cracking due to sudden shrinkage due to exposure to extreme weather and direct radiation from the environment. There are many ways to overcome the temporary, such as creating the array of climbing trees combined with fountains to help the wall surface not shrink suddenly. In addition, in basic construction there is a method of using liquid rubber and paints for effective waterproofing. The prominent feature of liquid rubber compared to other protective coatings is its great penetration resistance, elasticity and retention of up to 95% after stretching. As a result, liquid rubber can be used for waterproofing of structures with unstable cracks. When coating a thick film such as loose rubber along the crack, if the crack continues to grow, the liquid rubber will self-resilient and elastic along the crack. So leakage is also effectively overcome when heavy rain or flooding. In addition, liquid rubber is also available in the Spray Grade, so when used it is necessary to use a special sprayer and add a stimulant to accelerate the vulcanization. Loose wool will cure immediately after adhesion on the surface to be applied at normal temperature.
However, all anti-leakage solutions that need to be treated as soon as the work is still under construction will be a prerequisite for sustainable and sustainable civil construction.
Leak treatment for civil works
For the wall, the problem is often the walls of the walls are often large walls (> 4m) often cracked walls cracked, should be soaked from the outside. When building, it is necessary to divide the wall by <4m by adding the reinforced concrete column and wall and building the correct brick wall, filling the lake with full flow. Cement grout must be properly mixed and evenly, mixed with water thoroughly before construction. Construction of the wall should be done regularly to avoid the wall dry quickly cracking.
Particularly for ceiling and floor, where is permeable such as balcony, nano, sanitation ... most of the waterproofing process is not properly and due to the lack of careful care of the main layer of waterproofing. The first place to be waterproofed must be very careful in the concrete poured at that location is compacted thoroughly. The main waterproofing layer is a waterproofing additive layer that is directly scraped onto a concrete surface of at least 3 coats and properly cleaned by a waterproofing company. Then the layer must be mixed with additives to protect the reservoir as well as the slope to avoid water stagnation, continue to waterproof layer on the lake also scan 3-layer sequence, the last can be paved brick or sweep Protective oil tank if it is a gutter-gutter ...
For roofing problems, the roof must be roofed with a slope> = 10% of the length of each roof, the roof of the corrugated sheets must be two waves equivalent to 17cm, check the main wind direction of the house that roofing Swept in the wind direction to avoid water leak when rain and wind. Corrugated iron bolt is fired in the positive wave and carefully treated silicon screw head, not to go directly to the corrugated iron during construction to prevent warping leading to water leak into the house.
The ground and floor pebble, such as the ground floor walls, toilet walls, lake walls, basement walls ... The main reason is that the foot wall is not built with card brick height 50cm from the ground floor and do not treat the wall waterproof. Thus, the wall base is desiccated from the ground and moistens the plaster and plaster to absorb water, resulting in peeling and mold. The solution is to remove all the paint or the plaster layer is peeling, clean and then plastered cement mortar properly. After the wall is dry, use a 3-layer back-up waterproofing material at a minimum height of 50cm. When this layer is dry, continue to plaster and paint as new. Walls will be well protected over time thanks to the waterproofing layer. Same for other locations. However, construction experts still recommend that investors pay attention to wet-damp proofing from the beginning of construction so that the works are suitable with the climate of our country and the durability of the works higher.