High-efficiency waterproof and compression-resistant alloy powder for concrete and preparation method thereof

Abstract

The invention provides concrete efficient waterproof and compression resistant alloy powder and a preparation method thereof. The concrete efficient waterproof and compression resistant alloy powder is prepared from the following raw materials in parts by weight: 35 to 60 parts of magnesium iron silicate tailing micro powder, 8 to 12 parts of alumina, 5 to 10 parts of dolomite, 10 to 20 parts of natural mica flake, 3 to 8 parts of magnesium oxide, 3 to 8 parts of zirconium dioxide, 0.5 to 3 parts of graphene oxide powder, 0.5 to 3 parts of perfluororooctyltriethoxysilane and 10 to 15 parts ofmodified nanometer silicon rubber. The invention provides the concrete efficient waterproof and compression resistant alloy powder. The specific weight of the material is similar to that of cement; the separation and water secretion of a concrete mixture can be reduced; the material accumulation effect and the pore structures are improved; the total porosity is reduced; the concrete compactness isenhanced; the concrete compression strength is improved without influencing other performance; meanwhile, the waterproof and anti-seepage effects are obvious; the anti-cracking performance is good; the weather-resistant performance is excellent; the comprehensive performance is high, so that the durability of the concrete structure is improved and the service life is prolonged.

Description

technical field

[0001] The invention belongs to the technical field of building materials, and in particular relates to a concrete high-efficiency waterproof and compression-resistant alloy powder and a preparation method thereof. Background technique

[0002] Concrete is also called concrete, and concrete refers to the general designation of engineering composite materials in which aggregates are cemented into a whole by cementitious materials. With its wide applicability and price advantages, it has become the largest and most important building structure material in society. my country's concrete has experienced two main development stages of precast concrete and ready-mixed concrete, and has developed into an independent industry from construction engineering. At present, with the continuous improvement of urbanization level and the continuous expansion of national infrastructure construction, the amount of concrete is still increasing year by year, and it will be the m...

Examples

preparation example Construction

[0032] A method for preparing the above-mentioned high-efficiency waterproof and compression-resistant alloy powder for concrete, comprising the following steps:

[0033] (1) Crushing and mixing bauxite and dolomite, grinding together, calcining and quenching to obtain clinker A of expansive material and hard material;

[0034] (2) Mixing, grinding and sieving magnesium iron silicate tailings fine powder, natural mica flakes, magnesium oxide and zirconium dioxide to obtain alloy powder mixture B;

[0035] (3) Add tridecafluorooctyltriethoxysilane to acetic acid solution and stir for reaction, then add ethanol and graphene oxide powder for ultrasonic dispersion to obtain dispersion suspension C;

[0036] (4) Put the modified nano-silica rubber and dichloromethane in the reaction kettle and fully stir the reaction to obtain the dispersion D;

[0037](5) Put the clinker A prepared in step (1) and the alloy powder mixture B prepared in step (2) into a high-speed stirring reactor,...

Embodiment 1

[0040] A high-efficiency waterproof and compression-resistant alloy powder for concrete, which is made of the following raw materials in parts by weight: 60 parts of magnesium-iron silicate tailings micropowder, 8 parts of bauxite, 5 parts of dolomite, and 10 parts of natural mica flakes , 3 parts of magnesium oxide, 3 parts of zirconium dioxide, 0.5 part of graphene oxide powder, 0.5 part of tridecafluorooctyltriethoxysilane, and 10 parts of modified nano-silicone rubber.

[0041] The preparation method of the concrete high-efficiency waterproof and compression-resistant alloy powder as described above comprises the following steps:

[0042] (1) Crush and mix 8 parts by weight of bauxite and 5 parts of dolomite, and grind them together to form a specific surface area of ​​200m 2 / kg of raw meal powder, placed in a rotary kiln at 850°C for 20 minutes, heated to 1000°C at a rate of 10°C / min, and then calcined for 30 minutes. Material A;

[0043] (2) In parts by weight, 60 par...

Embodiment 2

[0048] A high-efficiency waterproof and compression-resistant alloy powder for concrete, which is made of the following raw materials in parts by weight: 35 parts of magnesium-iron silicate tailings micropowder, 12 parts of bauxite, 10 parts of dolomite, and 11 parts of natural mica flakes , 8 parts of magnesium oxide, 8 parts of zirconium dioxide, 3 parts of graphene oxide powder, 3 parts of tridecafluorooctyltriethoxysilane, and 10 parts of modified nano-silicone rubber.

[0049] The preparation method of the concrete high-efficiency waterproof and compression-resistant alloy powder as described above comprises the following steps:

[0050] (1) Crush and mix 12 parts by weight of bauxite and 10 parts of dolomite, and grind them together to form a specific surface area of ​​200m 2 / kg of raw meal powder, placed in a rotary kiln at a temperature of 900°C for 15 minutes, then raised to 1050°C at a rate of 10°C / min and calcined for 30 minutes. Material A;

[0051] (2) In parts...

technical field

[0001] The invention belongs to the technical field of building materials, and in particular relates to a concrete high-efficiency waterproof and compression-resistant alloy powder and a preparation method thereof. Background technique

[0002] Concrete is also called concrete, and concrete refers to the general designation of engineering composite materials in which aggregates are cemented into a whole by cementitious materials. With its wide applicability and price advantages, it has become the largest and most important building structure material in society. my country's concrete has experienced two main development stages of precast concrete and ready-mixed concrete, and has developed into an independent industry from construction engineering. At present, with the continuous improvement of urbanization level and the continuous expansion of national infrastructure construction, the amount of concrete is still increasing year by year, and it will be the m...

Examples

preparation example Construction

[0032] A method for preparing the above-mentioned high-efficiency waterproof and compression-resistant alloy powder for concrete, comprising the following steps:

[0033] (1) Crushing and mixing bauxite and dolomite, grinding together, calcining and quenching to obtain clinker A of expansive material and hard material;

[0034] (2) Mixing, grinding and sieving magnesium iron silicate tailings fine powder, natural mica flakes, magnesium oxide and zirconium dioxide to obtain alloy powder mixture B;

[0035] (3) Add tridecafluorooctyltriethoxysilane to acetic acid solution and stir for reaction, then add ethanol and graphene oxide powder for ultrasonic dispersion to obtain dispersion suspension C;

[0036] (4) Put the modified nano-silica rubber and dichloromethane in the reaction kettle and fully stir the reaction to obtain the dispersion D;

[0037](5) Put the clinker A prepared in step (1) and the alloy powder mixture B prepared in step (2) into a high-speed stirring reactor,...

Embodiment 1

[0040] A high-efficiency waterproof and compression-resistant alloy powder for concrete, which is made of the following raw materials in parts by weight: 60 parts of magnesium-iron silicate tailings micropowder, 8 parts of bauxite, 5 parts of dolomite, and 10 parts of natural mica flakes , 3 parts of magnesium oxide, 3 parts of zirconium dioxide, 0.5 part of graphene oxide powder, 0.5 part of tridecafluorooctyltriethoxysilane, and 10 parts of modified nano-silicone rubber.

[0041] The preparation method of the concrete high-efficiency waterproof and compression-resistant alloy powder as described above comprises the following steps:

[0042] (1) Crush and mix 8 parts by weight of bauxite and 5 parts of dolomite, and grind them together to form a specific surface area of ​​200m 2 / kg of raw meal powder, placed in a rotary kiln at 850°C for 20 minutes, heated to 1000°C at a rate of 10°C / min, and then calcined for 30 minutes. Material A;

[0043] (2) In parts by weight, 60 par...

Embodiment 2

[0048] A high-efficiency waterproof and compression-resistant alloy powder for concrete, which is made of the following raw materials in parts by weight: 35 parts of magnesium-iron silicate tailings micropowder, 12 parts of bauxite, 10 parts of dolomite, and 11 parts of natural mica flakes , 8 parts of magnesium oxide, 8 parts of zirconium dioxide, 3 parts of graphene oxide powder, 3 parts of tridecafluorooctyltriethoxysilane, and 10 parts of modified nano-silicone rubber.

[0049] The preparation method of the concrete high-efficiency waterproof and compression-resistant alloy powder as described above comprises the following steps:

[0050] (1) Crush and mix 12 parts by weight of bauxite and 10 parts of dolomite, and grind them together to form a specific surface area of ​​200m 2 / kg of raw meal powder, placed in a rotary kiln at a temperature of 900°C for 15 minutes, then raised to 1050°C at a rate of 10°C / min and calcined for 30 minutes. Material A;

[0051] (2) In parts...

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