Introduction:
In the field of modern construction, aluminum alloy formwork, as an advanced and efficient building formwork material, has become a popular choice for residential construction in the real estate industry. Its advantages such as superior vertical leveling, excellent molding appearance and cost savings for multiple turnovers make it highly favored in engineering construction. However, with its widespread application, we also face a series of quality issues that can have a potential impact on the quality and schedule of the project.
This article will deeply reveal the 10 common quality problems of aluminum alloy formwork in the construction process, and provide corresponding countermeasures for each problem. By in-depth understanding and solving these challenges, we aim to provide comprehensive and practical guidance for the smooth application of aluminum alloy formwork in construction projects. Let's work together to solve these problems and contribute to the progress and development of the construction industry.
1.The strength of the aluminum mold
Question:The strength of the aluminum mold does not meet the requirements and is prone to deformation.
Coping:Before entering the site, the strength of the aluminum model material is inspected, focusing on the acceptance of welds, joint widths and latches. Ensure that the material of the formwork meets the engineering requirements and improves the overall strength.
2.The overall stiffness of the aluminum formwork is insufficient
Question:A large number of small plates result in insufficient overall stiffness, which can cause structural deformation.
Coping:In the process of formwork deepening, special attention is paid to the molding of non-standard parts and the lower part of the negative corner of the wallboard, and measures are taken to enhance the stiffness of these parts and reduce the risk of structural deformation.
3.The problem of peeling on the concrete surface after the aluminum mold is removed
Question:After the mold is removed, the concrete surface appears to peel.
Coping:Apply the release agent before each use, it is recommended to use a water-based release agent, and coat the stencil to avoid contamination by the oil-based release agent and the impact on the later decoration.
4.The problem of slurry leakage at the joint after the aluminum formwork is removed
Question:After the mold is removed, the slurry leaks at the joint, resulting in a honeycomb surface and affecting the appearance.
Coping:After the mold is removed, the cement slurry at the edge of the formwork is cleaned in time to ensure that the joints are tight and prevent the occurrence of slurry leakage.
5.The problem of misalignment of upper and lower wall columns and stairs
Question:Some structural parts are misaligned.
Coping:The K-plate is set to be fixed independently on the structure to prevent the disturbance of the upper K-plate when the lower wall panel is removed, and to ensure the vertical alignment of the structure.
6.Cracking and leakage at the junction of beams and plates
Question:Cracking and leakage occur at the junction of beams and plates.
Coping:Control the timing of demoulding, ensure that the vertical formwork is removed after 12 hours, and the beam and slab bottom formwork is removed after 48 hours, and the support system is retained to prevent the floor slab from cracking caused by premature demoulding.
7.Concrete leakage problem at the root of the wall column
Question:Slurry leakage during concrete pouring at the root of the wall column, resulting in root rot after molding.
Coping:After the concrete pouring is completed, the leveling instrument is used to level the wall column root within 20cm, and the existing gap is blocked with mortar to ensure the pouring quality and the firmness of the wall column root.
By learning Xi these problems and countermeasures, we can have a more comprehensive understanding of the challenges that may be faced in the construction of aluminum alloy formwork, and can better avoid and solve these problems, so as to improve the quality and efficiency of the project.
8.Aluminum formwork bay window problem
Question:The bay window area is prone to problems such as bubbles, mold expansion, and mold explosion.
Coping:For the bay window part, strengthen the reinforcement, set the tension screw and the back flute, and the jacking brace goes up and down to reduce the pressure. Take measures at the openings of the bay window panels to reduce the generation of air bubbles.
9.Bubble problem on the surface of the wall column after demoulding
Question:Bubbles appear on the surface of the wall column after demoulding, which affects the performance of putty scraping in the later stage.
Coping:Adapt the concrete in advance and control the formation of air bubbles by adding a water reducer. In the pouring process, it is poured in layers, and the thickness of each layer does not exceed 1 of the vibrating rod25 times to ensure that the concrete surface is level. Use a wooden stick to tap the outside of the template from the bottom up to further reduce air bubbles.
10.The problem of the deviation of the lower hanging beam
Question:The lower hanging beam is eccentric, resulting in poor wall flatness.
Coping:Before pouring concrete, the lower hanging beam is reinforced to ensure uniform force and reduce deviation. Through the advance structural reinforcement, the deviation problem of the lower hanging beam can be effectively improved, and the flatness of the wall can be improved.
A detailed analysis of these problems and countermeasures demonstrates a deep understanding of the various challenges that may be encountered during the construction of aluminum formwork and provides practical solutions. By having a deep understanding of these issues, construction personnel can be more flexible to ensure that aluminum alloy formwork can play its advantages in construction projects, and improve construction efficiency and quality.