High-strength bare concrete surface maintenance method

Abstract

The invention belongs to the technical field of concrete processing and maintenance, and particularly relates to a high-strength bare concrete surface maintenance method which is characterized in that mixed fibers are added into concrete, so that the characteristics of the concrete are enhanced, the tensile property of the concrete is enhanced, and the impermeability and durability of the concrete are improved, the multi-level and multi-performance of the concrete are improved, and the effect of the concrete is improved. According to the present invention, the concrete comprises the following raw materials by weight: 150-180 parts of ordinary Portland cement, 50-75 parts of mineral powder, 60-80 parts of fly ash, 100-150 parts of quartz stone, 120-130 parts of wollastonite powder, 50-70 parts of a water reducing agent, 150-180 parts of polypropylene fiber, 100-130 parts of steel fiber, 200-300 parts of clear water and 55-70 parts of a mortar reinforcing agent, and the product has advantages of high bonding strength, strong shrinkage resistance, strong bonding force, stable performance, environmental pollution reduction and the like; and the construction quality can be improved, materials are saved, the requirements of new development of building environmental protection are met, environmental pollution is reduced, and good economic benefits and social benefits are generated.

Description

Technical field: [0001] The invention belongs to the technical field of concrete processing and maintenance, and in particular relates to a surface maintenance method for high-strength fair-faced concrete. By adding mixed fibers to concrete, the characteristics of concrete are enhanced, the tensile performance of concrete is enhanced, and its impermeability and durability are improved, so that the The multi-level and multi-performance of concrete is improved, the effect of concrete is improved, and the service life of concrete is increased. Background technique: [0002] Fair-faced concrete is the most widely used material in modern buildings. It is also called decorative concrete because of its great decorative effect. After the concrete is poured, no painting, tile, stone and other materials are used. It is the most basic guarantee for modern buildings. However, due to the fear of being soaked or deteriorated by rainwater, a waterproof protective film may be sprayed, but i...

AI Technical Summary

Problems solved by technology

[0002] Fair-faced concrete is the most widely used material in modern architecture. It is also called decorative concrete because of its great decorative effect. After pouring, concrete does not use any materials such as painting, tiles, and stones. It is the most basic guarantee for modern architecture. However, due to fear of being soaked or deteriorated by rainwater, a layer of waterproof protective film may be sprayed, but it cannot meet the long-term surface maintenance requirements of concrete; Level the riprap surface after riprap on the downhill slope; sew geotextile bags, the length of which is the sum of the length of the underwater protection surface of the earth dam and the length of the surface protection surface; and lay geotextile bags in sequence along the construction direction of the shoreline; The bottom of the geotextile bag starts to fill with concrete, and the filling length is subject to the design slope length; the cuff of the geotextile bag at the end of the water is filled in the direction of the water; the concrete flows and fills in the geotextile bag, fills the entire geotextile bag, and the concrete solidifies After hardening, an underwater concrete protection surface will be formed at the predetermined design position to protect the underwater part of the soil dam; after the concrete in the geotextile bag reaches the design strength, concrete filling for topping or anchoring ditch will be carried out to carry out slope protection. Foot riprap presser foot construction is not limited by seasons, and can be constructed in dry seasons and wet seasons; Chinese patent 201810559139.8 discloses a high-durability fair-faced concrete and its construction method, including cement, cementitious materials, water, and aggregates and mineral admixtures, the mineral admixtures mainly include fly ash, the water-binder ratio of the high-durability fair-faced concrete is 0.3-0.35, the mixing water consumption is ≤160kg / m3, and the cementitious material consumption is 400-500kg / m3 , the amount of fly ash is 30% to 40% of the total amount of cementitious materials; a construction method of high-durability fair-faced concrete, comprising: step one, identifying and determining the factors affecting the high-durability concrete in coastal environment, step two, concrete Structural durability redesign, step 3, preparation of high-durability fair-faced concrete, step 4, construction of high-durability fair-faced concrete, step 5, formwork removal and finished product protection; Chinese patent 201910910265.8 discloses a high-strength concrete and its preparation process, It is made of the following raw materials by weight: 451-473 parts of cement, 198-217 parts of mineral admixture, 545-570 parts of fine aggregate, 1110-1145 parts of coarse aggregate, 135-147 parts of mixing water and 26 parts of admixture ~29 parts; it has the advantages of rationally utilizing the sewage on the mixing station, and maintaining or even improving the strength of high-strength concrete; its preparation method is: (1) proportioning cement, mineral admixture, fine aggregate and coarse aggregate Put it into a concrete mixer and stir evenly; (2) add the admixture into the mixing water and mix evenly to obtain mixed water; (3) add the mixed water into the mixer and mix evenly to obtain high-strength concrete; prior art And the concrete processing and maintenance process in the above-mentioned patented product is complex, and the strength is not high, it cannot meet the maintenance requirements of concrete, and the service life is limited; therefore, a high-strength fair-faced concrete surface maintenance method is invented. By adding mixed fibers into concrete, it enhances the characteristics of concrete, enhances the tensile properties of concrete, improves its impermeability and durability, improves the multi-level and multi-performance of concrete, improves the effect of concrete, and increases the service life of concrete , with good social value and economic benefits