Environmentally-friendly high-strength cement and use method thereof
A high-strength cement, environment-friendly technology, applied in cement mixing devices, chemical instruments and methods, clay preparation devices, etc., can solve problems such as affecting the safety and service life of buildings, accelerating the chemical corrosion of cement by chloride ions, etc. Achieve the effect of improving safety and service life, blocking chemical corrosion, and reducing permeability
Inactive Publication Date: 2019-03-08
关军
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Problems solved by technology
[0003] The existing high-strength cement is widely used in marine construction projects and construction projects in saline areas. The chloride ion of concrete has a very important influence on the corrosion of steel bars. In construction projects near the ocean and construction projects in saline areas, in Under the action of the capillary, the water absorbs upwards and evaporates continuously, leaving the salt contained in the water. After a long period of accumulation, the salt solution in the concrete pores is concentrated, which accelerates the chemical corrosion of the cement by chloride ions. Crystallization and expansion in the pores lead to expansion and cracking of concrete buildings made of cement, which seriously affects the safety and service life of buildings
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Embodiment 1
[0039] see figure 1, an environmentally friendly high-strength cement, its composition includes sulfate-resistant Portland cement, diatomaceous earth, admixture, blast furnace slag, tailings, volcanic ash and fly ash, wherein each composition is divided according to the weight ratio It is: 45-65 parts of sulfate-resistant Portland cement, 5-15 parts of diatomaceous earth, 0.1-0.6 parts of admixture, 20-45 parts of tailings, 40-60 parts of volcanic ash and 5-25 parts of fly ash, The composition of the mixture includes water reducer and polyvinyl alcohol fiber, the water reducer accounts for 0.05-0.15 parts by weight, and the polyvinyl alcohol fiber accounts for 0.025-0.1 part by weight. The superplasticizer is polycarboxylate superplasticizer, and the polyvinyl alcohol fiber is polyvinyl formal fiber with a specification of 106-115cN / dtex, which facilitates the uniform mixing of cement raw materials, and strengthens cement in reinforced concrete buildings. The uniformity in th...
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The invention discloses environmentally-friendly high-strength cement and a use method thereof, and belongs to the technical field of concrete production. The environmentally-friendly high-strength cement is prepared from the following constituting components in parts by weight: 45-65 parts of sulfate-resistant portland cement, 5-15 parts of kieselguhr, 0.1-0.6 part of a mixture, blast furnace slag, 20-45 parts of tailings, 40-60 parts of volcanic ash and 5-25 parts of coal ash. The mixture comprises the following components in parts by weight: 0.05-0.15 part of a water reducing agent and polyvinyl alcohol fibers. The environmentally-friendly high-strength cement and the use method have the advantages that the internal composition of a concrete building can be realized, so that a fine mineral admixture can exert a filling effect inside concrete, the concrete structure becomes more compact, and the permeability of concrete is reduced; and therefore, chemical corrosion of chloridions tocement is blocked, the safety of the concrete building is improved, and the service life of the concrete building is prolonged.
Description
technical field [0001] The invention relates to the technical field of concrete production, and more specifically relates to an environment-friendly high-strength cement and its application method. Background technique [0002] Concrete, referred to as "concrete (tóng)": refers to the general designation of engineering composite materials in which aggregates are cemented into a whole by cementitious materials. Generally speaking, the term concrete refers to the cement concrete obtained by using cement as the cementitious material, sand and stone as the aggregate; mixed with water (may contain admixtures and admixtures) in a certain proportion, and stirred. Concrete, which is widely used in civil engineering, can be divided into inorganic cementitious concrete and organic cementitious concrete according to cementitious materials. Inorganic cementitious concrete includes lime siliceous cementitious concrete, Portland cement concrete, calcium Aluminum cement concrete, gypsum c...
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Login to View More IPC IPC(8): C04B28/04C04B41/63B28C5/40C04B111/20
CPCB28C5/402C04B28/04C04B41/4853C04B41/63C04B2111/20C04B14/08C04B18/141C04B18/12C04B18/08C04B14/14C04B2103/302C04B16/0641
Inventor 不公告发明人
Owner 关军