Seam waterproof structure and construction technology and application thereof

Abstract

The invention relates to the technical field of waterproof projects, in particular to a seam waterproof structure and a construction technology and application thereof. According to the seam waterproof structure, a first layer of matrix is recessed into a seam to form a groove, and then painting is carried out with waterproof paint to make the groove filled with the waterproof paint, so that the thickness of the waterproof paint in the middle of the seam is large, the tensile effect is better, and the thickness of a waterproof layer can be well maintained even when the waterproof layer is tensioned; by means of the matrix, the waterproof paint layer behind the matrix forms one or more tensile-avoidable layers, the tensile effect is better, and thus the waterproof layer has good ductility and tensile property and can maintain good waterproofness even under large tensile force. The seam waterproof structure is suitable for various small-width seams and can achieve a good waterproof effect; few materials are used, and only the matrix and the waterproof paint are needed; besides, the construction process includes few steps, and the construction is simple and convenient.

Description

technical field [0001] The invention relates to the technical field of waterproof engineering, in particular to a seam waterproof structure and its construction technology and application. Background technique [0002] In recent years, the proportion of leakage caused by building joints is very high, and it is difficult to repair and the maintenance cost is high. Building joints can be divided into cracks, gable joints, construction joints, deformation joints (expansion joints, settlement joints), etc. Due to the influence of factors such as geological expansion, settlement and environmental temperature difference, the gaps in buildings are not only prone to deformation but also change very frequently. The deformation caused by the above factors will cause the waterproof material in the gap to be repeatedly stretched for a long time, resulting in premature aging of the waterproof material and water leakage. [0003] The structural parts where gaps appear are waterproof, mo...

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Problems solved by technology

[0004] At present, the main method of seam waterproofing is to use non-combustible thermal insulation materials to fill the gaps, and then cover the surface of the seams with multi-layer waterproof membranes to overlap, and set flexible insulation between the multi-layer waterproof membranes above the gaps. The most commonly used padding materials are foam rods to increase the extension and tensile strength of the coiled material. However, the padding materials and non-combustible insulation materials used are not waterproof, which will easily cause leakage and water accumulation in them, resulting in long-term damage. Humidity and accelerated material aging, eventually leading to failure of waterproofing

When dealing with small gaps, since the waterproof membrane itself has a certain thickness, it is impossible to set a flexible cushion material between the multi-layer waterproof membranes above the gap to increase the extension and tensile properties of the membrane. Therefore, When the gap changes and grows, the waterproof membrane is easy to be pulled and cracked, resulting in water leakage

In addition, the waterproof membrane can only be spliced ​​to deal with the complex base layer. It is difficult to overlap each other, the waterproof quality of the interface cannot be guaranteed, and the hidden danger of water leakage is great. In addition, damage, degumming, and glue leakage of any part of the waterproof membrane will lead to penetrating damage. Water leakage will lead to the loss of the waterproof function of the entire waterproof layer and its connected layers. If the specific damage and defect cannot be found, it cannot be repaired and can only be waterproofed again.

When waterproofing seams with membranes, there are still problems such as complex construction, numerous procedures, difficult construction, and high labor time costs, and the creep and extensibility of the waterproof structure formed after construction are very limited.

[0005] At present, there is also a treatment method that directly uses waterproof paint to paint the surface of the gap after injecting fillers in smaller gaps, but fillers have problems such as poor bonding strength, low elongation, and easy cracking, while waterproof coatings have problems such as anti-corrosion. The problem of poor tensile strength. When this method is used for seam waterproofing, the waterproof coating is easily torn as the gap deforms, resulting in waterproof failure. Therefore, waterproof coatings are rarely used for seam waterproofing.

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