Daily maintenance and joint treatment of GRC materials! GRC material is a kind of glass fiber reinforced cement, which is a new composite material invented in the 1970s. It integrates the characteristics of light weight, high strength, high toughness and water resistance, non combustion, sound insulation, heat insulation, easy processing, etc., and occupies a unique position in architecture. So far, with the emergence of low alkali cement and alkali resistant glass fiber, GRC decorative components have been widely used in buildings around the world GRC components include columns, decorative lines, doors and windows, fences, garden supplies, urban sculptures, etc., which have different shapes and compete with each other. The taste of urban culture and high-rise buildings has been greatly improved. Any object will become worse as time goes by. Now let's share the daily maintenance of GRC materials and joint processing methods!
1、 GRC material composition
The basic components of GRC are cement, sand, fiber and water. In addition, polymers, additives and other materials are added to improve the later performance
Cement: cement commonly used in GRC mainly includes quick hardening sulphoaluminate cement, low alkalinity sulphoaluminate cement, ordinary Portland cement and white Portland cement
Fiber: The fiber used in GRC materials must be alkali resistant glass fiber, including alkali resistant glass fiber roving, alkali resistant glass fiber chopped yarn, and alkali resistant glass fiber gridding cloth. European and American countries require that the zirconia content of glass fiber used in GRC should not be less than 16.5%, and domestic countries require that the zirconia content of glass fiber used in ordinary Portland cement should not be less than 16.5%
Polymer: usually added polymer is acrylic emulsion, namely acrylate copolymer emulsion
Admixtures: Generally, superplasticizer, plasticizer, retarder, early strength agent, antifreeze, rust inhibitor and other admixtures can be selectively added: when the products contain steel reinforcement materials or steel embedded parts, calcium chloride based admixtures shall not be used
Other materials: some pozzolanic active materials can be selectively added to improve the comprehensive performance of GRC products, such as strength, impermeability, durability, etc
2、 Daily maintenance of GRC materials:
1. Try to avoid dust and stains. If the surface is stained with dust or stains, it can be cleaned with a vacuum cleaner, and make sure that the vacuum cleaner is a soft brush, because if it is hard, it may scratch the sandstone
2. The sealing shall be carried out as soon as possible after installation: the sealing opening can be used as a protective layer to prevent the entry of dust and stains and the evaporation of water in the sandstone, otherwise, it will be damaged when it reacts with the substances in the air
3. Do not contact with oil stain: oil or dirt will lead to staining of sandstone background wall, if contacted, it should be cleaned as far as possible
4. Avoid using ceramic tile cleaning agent for cleaning, because it will fade the ceramic tile, use clean soft cloth and warm water, and wipe frequently to prevent the deposition of harmful chemicals and damage the surface The splicing joint treatment method of GRC material construction: the splicing joint of GRC material construction can be treated by "open joint" and "hidden joint". The so-called "open joint" refers to the decorative effect achieved by reserving a natural seam of 12~20mm at the joint opening according to the design requirements of the drawing and a certain building module when the GRC material is assembled. The "hidden joint" treatment method needs to be repaired at the splicing joint of GRC material, Make the lines achieve the overall smooth and unified decorative effect
3、 Method of splicing joint treatment for GRC material construction:
The construction joint of GRC material can be treated by "open joint" and "hidden joint". The so-called "open joint" refers to the decorative effect achieved by reserving a natural joint of 12~20mm at the joint opening according to the design requirements of the drawing and a certain building module when GRC material is assembled. The "hidden joint" treatment method needs to be repaired at the GRC material joint, Make the lines achieve the overall smooth and unified decorative effect
Hainan GRC component
