Analysis of leakage prevention technology in building engineering?

The following is the related content of anti-leakage technology in construction projects brought by Zhong Da Consulting for your reference.

Overview of external wall leakage prevention technology

In the external wall construction, anti-leakage work is the key point of external wall construction, and the detailed treatment of doors, windows, kitchens, bathrooms and roof walls is the key link of external wall. As a construction worker, we should operate in strict accordance with GB50203-2002 Code for Quality Acceptance of Masonry Engineering and pay full attention to the quality of masonry. Bricks should be watered and moistened in advance, and the peripheral walls should be plastered with spatula. For example, in the process of engineering construction, when the rainfall exceeds 10cm/h, a whole batch of water curtain is formed on the wall, and the clean water pressure of the wall is 70kg/㎡, so the external wall leakage may occur, which is one of the main external reasons for the external wall leakage. Therefore, every technical link and construction step of external wall construction directly affects waterproofing. In order to ensure that no leakage occurs, it is necessary to have a comprehensive and objective understanding of the parts of the external wall that are prone to leakage when conducting anti-leakage treatment. Generally speaking, the external wall seepage prevention project is a systematic project, so when the main body starts construction, some appropriate measures should be taken to make the building in a state of multiple defenses. Aiming at the construction of building engineering, the corresponding anti-seepage technology is expounded in several structural parts one by one.

Second, the doors and windows leakage prevention measures

Doors and windows belong to the scope of activities of buildings, and they are the places with the largest area and the highest frequency. Therefore, the anti-leakage work of doors and windows is relatively difficult, which requires not only high technical content of construction personnel, but also strong architectural theoretical knowledge. Only by combining the two can we do a good job of preventing leakage of doors and windows. In the anti-leakage work of doors and windows, we should pay full attention to the installation and future functional use of doors and windows. The number of activities and the area of doors and windows will have an impact on the beauty of the building and the future use of residents. Therefore, when dealing with the leakage prevention of doors and windows, we should fully consider the overall aesthetic situation. During the construction of aluminum alloy windows for exterior walls, the selected aluminum materials must meet the relevant national standards and meet the requirements of drawing design. In the process of handling and placing, attention should be paid to prevent deformation, damage and distortion of semi-finished products as much as possible. After the deformation of semi-finished products, manual correction is prohibited. The selected accessories should also meet the relevant standards. Make sure the installation is firm. After opening it tightly, feel whether there is wind blowing in the indoor closed state. If the wind blows in, don't correct it. In addition, after the installation of the window frame is completed, sealing treatment should be carried out around it. Generally, dry waterproof mortar and aggregate waterproof mortar are used, and layered filling and embedding work is carried out according to the ratio of 1: 2, and modified waterproof mortar is painted on both sides of the outside to ensure that the joint filling will not be empty. Professionals should be sent to check the caulking one by one. Ensure that the height difference between the outer window sill and the inner window sill is not higher than 20mm, and make the water distribution tilt outward. The upper window eyebrow should be made into the shape of an eagle's mouth, and the slope should be kept above 20%. The ordinary latex paint brushed at the bottom of the board should be replaced with an exterior wall paint with better waterproof performance.

Three, the kitchen and bathroom leakage prevention measures

Kitchen and bathroom are the two places that use the most water in the building. No matter where the waterproof work is not done well, it will do harm to people's work and life. Therefore, the anti-leakage work of kitchen and bathroom is very important in building engineering. The floor of the kitchen is 50mm lower than that of the living room and bedroom. In the process of structural construction, the height difference should be made, and the slope should be started according to the relevant regulations. Floor drain should be lower than adjacent floors 10 mm or more, and the walls of kitchen and bathroom should be plastered internally within the range of 0- 1.8m, and waterproof powder should be added. Fine stone concrete and micro-expansive agent should be used as sealing materials for flue and floor-crossing pipeline, and the surrounding area should be carried out. And clean up, good template, with fine stone concrete block. Within 200mm around the pipeline, the slope should be found from the side of the pipeline. Before the waterproof construction of kitchen and bathroom, structural inspection should be carried out. Once leakage is found, the source of leakage must be found, thoroughly treated, and then waterproof coating should be carried out according to the design requirements.

Four, roof leakage prevention technology

In the process of building construction, we must ensure the construction quality of roof panels, and organize professional and technical personnel to strictly supervise the waterproof project of flat houses, because the quality of roof panels not only plays a certain role in preventing leakage, but also plays a role in heat preservation and bearing. Roof leakage is mainly manifested in the leakage of air outlet pipe, eaves gutter and eaves gutter. In the face of leakage in these places, we can take measures such as investigating and analyzing the geographical location, environment, temperature and humidity where the construction project is located, selecting appropriate anti-leakage materials and temperature coiled materials, and constructing waterproof materials such as coiled materials and coatings according to their respective usage specifications. When pouring reinforced concrete, attention should be paid to the continuity of pouring. In order to prevent the occurrence of cracks due to the drop in temperature, which may lead to potential leakage, the reinforced concrete must be vibrated and compacted to avoid slurry leakage and reinforcement leakage. When making a leveling layer, it is necessary to ensure that the structure and materials are rigid, the structure and strength are integrated, and the slope is appropriate, so as to effectively avoid the formation of water leakage.

Five, the wall leakage prevention technology

In building construction, the main factor causing building leakage is wall cracks. From the professional construction technology and construction technology, the cracks in the building wall are mainly caused by poor foundation soil or irregular architectural modeling. In addition, irregular settlement of foundation or selected building materials are also the reasons for wall cracking. Once cracks appear in the wall, the possibility of leakage will be greater. Therefore, in order to effectively improve the strength and stiffness of buildings, when pouring concrete, we should choose concrete with low hydration heat, and at the same time, we can add some additives appropriately, which can effectively prevent the harm caused by foundation expansion and settlement and effectively reduce the occurrence of leakage. When concrete is used in seepage control engineering, it should be selected according to the seepage control grade of waterproof concrete. Under normal circumstances, the construction of building projects will not be carried out in hot summer, but will start at a suitable temperature. In building construction, it is necessary to set deformation joints such as expansion joints, seismic joints and settlement joints. If the soil quality of the engineering foundation is poor, it should be properly adjusted according to the possible changes of the foundation and the symmetry of the building. If some temperature changes or other factors may cause stress concentration, then the gas will produce cracks and so on, so it is necessary to set up expansion joints.

Ending of intransitive verbs

In a word, the anti-leakage of building external walls is a complex and gradual process, and construction enterprises should strengthen technical management and quality supervision to fully understand the situation, conditions and hazards of leakage. Because buildings are industrial and civil buildings, once leakage occurs, the loss is very huge. At present, people in the industry have gradually noticed that leakage damages the integrity of buildings and pipeline equipment. Once the building leaks, it will not only bring trouble to property management, but also bring trouble to maintenance personnel. Therefore, only by striving to improve the anti-leakage technology and overall level of Chinese buildings can we effectively prevent building leakage. Domestic construction engineering technology design units and research units should strengthen the research on building leakage prevention technology, which can also promote the improvement of building technology level in China.

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