Glass curtain wall is a unique design in modern architecture. One of the distinctive advantages of the glass curtain walls is that the use of various energy-efficient glass panels to greatly reduce the energy consumption of buildings. So far, modern high-rise buildings have been plagued by glass curtain walls. However, glass curtain walls with unreasonable design, material selection and construction will cause some potential problems like glass breakage, glass fall, and water leakage and etc.
In practical applications, glass breakage is one of the common problems with curtain wall facade system. There are many reasons for causing glass breakage. Firstly, the glass burst caused by the impurity nickel sulfide. Nickel sulfide is an inevitable harmful impurity in the production process of glass. Nickel sulfide itself does not cause any damage to the glass. However, when the glass curtain wall panel containing nickel sulfide is installed, the volume of nickel sulfide is generated due to the increase of external temperature. Minor changes cause tiny cracks in the interior of the glass. These cracks pass through the tempered glass tension and release the internal energy, causing the glass to break. In that regard, curtain wall manufacturers should monitor the glass manufacturing process to minimize the contact between the nickel-containing materials and the glass raw materials. Secondly, after the installation of the curtain wall glass, there is a technology for detecting the presence of nickel sulfide impurities by photography. If it is necessary, the necessary replacement should be carried out in time to prevent the glass from being damaged after being broken. It is also possible to replace the single piece of tempered glass and the tempered insulating glass with laminated glass. If the nickel sulfide impurity is deformed due to deformation, the glass is broken and the fragments are still adhered to the film. In addition, thermal stress is another important cause of glass curtain wall breakage. As a rule, there are many reasons for the heating of the glass curtain wall, but the most important heat source is sunlight. When the sunlight shines on the surface of the curtain wall panels, the glass will be thermally expanded. If the glass is evenly heated, the glass edge and the central portion of the glass will expand evenly at the same time while if the glass is unevenly heated, tensile stress is generated inside the glass. As a result, once there are cracks or micro cracks in the edge of the glass, these defects are easily affected by thermal stress.
Solution To Avoid Glass Curtain Wall Breakage
Firstly, the edge of the glass is finished, using fine-edged or polished edges to reduce the presence of micro-cracks. Secondly, the glass should be tempered to enhance the glass’s ability to resist temperature changes. Thirdly, during any stage of curtain wall construction, the glass must be properly protected. Be careful not to collide and rub the edge of the glass with other hard objects. Strictly follow the operating procedures, especially during the installation process, if the frame is not suitable (too small or distorted deformation), make sure not to pinch the corners of the glass with pliers, as well as to correct the frame to fit the size of the glass.
Send your message to us:
Post time: Nov-11-2022
