Cement, glass fiber reinforced

Cement, glass fiber reinforced - a new composite material derived from the cement matrix or cement and fine aggregate and a small amount of alkali-resistant fiberglass. Expansion of production and application of designs from the GRC is an important reserve to reduce the cost of construction, saving labor costs, improve reliability and durability of building constructions. Disperse reinforcement not only improves the strength properties of concrete, but, more importantly, improves the performance of structures, for example, resistance to dynamic, temperature and humidity effects, wear, etc., which allows us to obtain a significant effect in the production and operation of GRC designs. According to the purpose GRC divided into structural, waterproofing, decorative and special. Based on the destination GRC, they are given appropriate properties through a combination of SHORT and long-fiber glass-fiber reinforcement elements and manufacturing technology. GRC has a very high technological properties of the formation of products of virtually any desired shape, has a high rate of bending strength, high impact strength, elasticity, crack resistance, water resistance, and, where necessary, and decorative surface. GRC provides a means of translating the architect of his plan, which the ductility, the ability to transfer the surface relief and lightness can compete with any other material. GRC is lightweight, easy handling, low cost installation and transportation; creates a decrease in load bearing structure of buildings, which provides a significant reduction in the cost of building the foundation and frame of the building, which is important for the restoration and reconstruction, has a low permeability, fire-resistant. GRC wall cladding panels used in the elements to be performed on request for special purpose buildings, as modular elements in serial uniform construction, in the form of cladding panels in the reconstruction of old buildings. Decision for each case can be made through the following options: single-layer panels with stiffeners; fixed timbering filled. GRC - an excellent material for various types of roofing. They can mimic traditional roofing materials such as slate, ceramic tiles. But unlike them he is not fragile and not heavy. For roofs with slopes of GRC can mimic the natural slate, both in appearance and in texture. To mount use the usual slate nails without pre-drilling holes, since GRC is durable and does not break when mounting. GRC plays an important role in the design of urban recreation areas like construction sites and small architectural forms. It can be used for decorating painting decorative ponds, fountains, benches, flower girls, handrails, kiosks and other small architectural forms of the GRC are more attractive because GRC can send any form, shape and surface finish to match the surrounding landscape. Stucco covers the use of GRC have high durability and high resistance to cracking and peeling. GRC has a high resistance to chemicals, including urban pollution and salt solutions. He also has high acoustic properties, does not rust, rot, does not corrode and does not burn. Therefore, the GRC may be molded from various articles of complex configuration, which are used in civil engineering in the construction of highways, water mains and water storage tanks, mines and tunnels. GRC can also be used for the manufacture of large diameter pipes. Reinforced it as a chopped fiber and alkali-resistant fiberglass mesh. Small pipe wall thickness and lack of coupling compounds to reduce the size of the ditch and the amount of backfill. Pipelines can be installed under roads with high traffic load, because GRC is durable and has high strength properties in the application of alkali-resistant glass fiber as a reinforcing component. GRC is an ideal material for bridges, where it is used to produce the elements of parapets, noise-reducing enclosure. These elements can be quite long-haul and low weight. In addition, the GRC provides a higher level of protection for steel reinforcement and a higher resistance to chloride penetration than the concrete of the same thickness. Light weight and thin-walled products can be used for the manufacture of GRC elements of canals and aqueducts, which replace the short and heavy cast concrete elements. Weight loss products in 3 times for easy operation in the construction of drainage and irrigation systems to the terrain. In addition, the construction of underground water or cable channels are reduced construction costs by reducing the number of required support. Elements of the cable, drainage and irrigation canals of the GRC can also be used as permanent formwork. In this case, the elements of the GRC are set in place, and then pour the concrete, and the role of GRC - to form an internal channel profile with a smooth surface and eliminate the use of complex time formwork. Distinguish a number of key technological methods of manufacturing GRC products and designs: a preliminary mixing of components (tsementostoykoe fiberglass and concrete) and stacking the resulting composition in the form of simultaneous vibration effects on the mixture and the ambient pressure (0.2 MPa), contact method, which is laying a fiber glass-fiber reinforcement and impregnation of each layer of cement binder; simultaneous spraying components formumatritsu for flat or curved thin plates and zaschitnokonstruktsionnyh shirts, forming products by bending unhardened GRC flat sheet, and secondary forming of products due to the elastic properties of hardened GRC. For the production of GRC products and designs used both domestic and imported equipment, guarantees GRC mixtures with the desired properties and GRC with specified design characteristics. In the production of GRC products and designs by spraying or by pouring with preliminary mixing, the content of alkali-resistant glass is 2,5-3,5%. Its contents can be 1,5-2,5% for reinforcement of finishing coatings to reduce cracking in the production of waterproofing coatings.