Classification and Maintenance of Glass Curtain Wall
The reflection glass curtain wall refers to a building envelope or decorative structure composed of a supporting structural system and glass, which has a certain displacement capability with respect to the main structure and does not share the main structure. The wall is available in single or double glazing. The glass curtain wall is a beautiful and novel method of building wall decoration, which is a distinctive feature of the era of modernist high-rise buildings.
Classification
Bright frame glass curtain wall
The exposed frame glass curtain wall is a glass curtain wall in which the metal frame member is exposed on the outer surface. It is framed by a special section of aluminum alloy profile, and the glass panel is fully embedded in the groove of the profile. Its characteristic is that the aluminum alloy profile itself has the dual function of the skeleton structure and the fixed glass. The framed glass curtain wall is the most traditional form, the most widely used and reliable. Compared with the hidden frame glass curtain wall, it is easier to meet the construction technical level requirements.
Hidden frame glass curtain wall
The metal frame of the hidden frame glass curtain wall is concealed on the back of the glass, and the metal frame is not visible outside. The hidden frame glass curtain wall can be divided into two types: full hidden frame glass curtain wall and semi-hidden frame glass curtain wall. The semi-hidden frame glass curtain wall can be horizontal and vertical, or it can be vertical and horizontal. The structural characteristics of the hidden frame glass curtain wall are: the glass is on the outside of the aluminum frame, and the glass is sealed with the aluminum frame by a silicone structural sealant. The load on the curtain wall is mainly absorbed by the sealant.
Glass maintenance
An important part of the curtain wall is glass, which is a consumable part, so management and protection are important. Wide circulation of air in the place where it is preserved is necessary. Especially in the high temperature and cycle temperature cycle should pay more attention. If conditions do not allow them to be stored indoors, they should be covered with tarpaulin or plastic to prevent wind and inflow of water, and the hood should be opened periodically to check for moisture condensation.
The glass must be covered with an opaque shield that must never be stored directly under the sun. Stacking all types of glass should be placed upright at an angle of 5 ° – 7 ° from the vertical and leaning against a solid straight wall. The top and bottom edges of all glass should be on the felt pad and separated by protective cardboard or other felt. If the glass is flat, the surface must be covered with oil felt to prevent dust, grit, or other contaminants.
Protection during construction. In the construction, it is usually hung with a bright flag, ribbon, etc. near the glass or attached to the front of the window frame, side column or window sill to mark the space for installing the glass. Never let the rope touch the glass directly, and do not let the mark or paint directly on the glass surface. If welding, cutting sandblasting or other construction processes that may damage the glass are used near the glass, plywood or plastic must be applied. The plates act as a tight barrier to prevent them from affecting the glass.
Node maintenance
The curtain wall node is the main attachment for the connection between the curtain wall and the floor. In order to prevent corrosion, it is necessary to carry out surface treatment. Generally, the surface of the A 3 steel is galvanized, and the surface is coated with a rust-proof iron red primer. The nodes that are not sealed on the floor can be inspected at any time. It is found that the corrosion can be partially polished and then painted. If the bolts are loose, retighten. Floor repairs can be checked regularly (times are two years). Partial inspection, if all problems are found, and anti-corrosion treatment is carried out.
Periodic inspection
(1) During the warranty period, the supplier shall periodically check and return the visit, and find that the hidden dangers are eliminated in time.
(2) The rubber strip and the glue injection are inspected at any time, and if it is found to be detached or damaged, it may be replaced or repaired in time.
At present, most of the domestic use is domestic silicone rubber and imported silicone rubber, and must be tested by the national designated testing unit for compatibility testing. Note that the repair must be repeated after 24 hours of complete curing. The damage should be cleaned up and should be greater than 2/3 length.
(3) Regular cleaning with a window cleaner.
(4) Surface repair: repair paint for local damage or scratching. Brown refinish and white refinish: BOSNY
(5) Inspection
First, the surface inspection method: visually inspect the surface for damage. The second is the internal inspection method: check whether the glass is damaged, and find that the damage is replaced in time. The connectors are periodically checked for corrosion and looseness. Whether the hardware has functional barriers. Whether the strip is peeled off, cracked, and whether the glue is defective. Check the inspection area for damage. Whether the glass is condensation.
Regular maintenance
(1) Wash with a solvent. After removing the grease and glazing material with a solvent such as xylene, toluene, inorganic alcohol or ether, wash and rinse. Be careful not to use too strong solvent to avoid damaging the sealant of the fixed glass.
(2) Normal cleaning and drenching. It should be cleaned frequently, drenched and dried, especially during construction, using soft, clean, dust-free cloth and neutral soap, lacquer or slightly acidic cleaning solvent. Immediately after washing, rinse with water, then wipe off the remaining water with a clean squeegee. Because fingerprints, oil stains, stains, dust, slag, sealant residues, scratches, and any surface scratches on coated glass are more conspicuous than on ordinary glass, we are managing and cleaning the coating. Care should be taken when using glass. Therefore, the coated glass may require frequent cleaning during the entire project, and the separator should always be used between the coated glazing panels.
(3) Surface damage. Contaminated by concrete, alkali or fluorine-containing substances sometimes released from concrete or building masonry during storms may stain or corrode the glass. The concrete structure in front of the window arches should be designed so that the dripping water does not drip. On the glass. Prefabricated panels and other concrete wall materials should be thoroughly mixed to make them uniform hydrates and fully cured. The surface treatment of concrete (acidified sandblasting, rock drilling, grouting, waterproofing, etc.) should be The glass is finished before the glass is installed, and the pieces should be removed.
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