Silica powder-doped colored heat-resistant cement concrete and preparation method thereof

Abstract

The invention discloses a silica powder-doped colored heat-resistant cement concrete. The silica powder-doped colored heat-resistant cement concrete is composed of, by weight percentage, 16-22% of Portland cement, 32-34% of coarse aggregate, 30-32% of fine aggregate, 6-7% of coal ash, 3-6% of silica powder, 0.5-9.0% of pigment, 0.01-0.03% of coloring hardener, 1-2% of compound water reducer, 0.03-0.08% of sodium gluconate retarder and water as balance. The invention also discloses a preparation method of the silica powder-doped colored heat-resistant cement concrete. The preparation method ofthe silica powder-doped colored heat-resistant cement concrete comprises the following production steps of S1, according to the weight percentage, weighing out and premixing the Portland cement, the coarse aggregate and the fine aggregate into a uniform state, and then extracting a component A. The silica powder-doped colored heat-resistant cement concrete is scientific and reasonable in composition, and by doping in the silica powder which is combined with the coal ash, can improve the material compactness and further significantly improve pressure resistance, wearing resistance and thermal resistance to meet the refractory requirements of various occasions, thereby having a good application prospect.

Description

technical field

[0001] The invention relates to the technical field of concrete, in particular to a colored heat-resistant cement concrete mixed with silica micropowder and a preparation method thereof. Background technique

[0002] Microsilica powder can fill the pores between cement particles, and at the same time form a gel with the hydration product, and react with the alkaline material magnesium oxide to form a gel. Adding a proper amount of silica fume to cement-based concrete, mortar and refractory castables can play the following roles: 1) Significantly improve the properties of compression resistance, flexural resistance, impermeability, anti-corrosion, impact resistance and wear resistance. 2) It has the functions of water retention, preventing segregation, bleeding, and greatly reducing the resistance of concrete pumping. 3) Significantly prolong the service life of concrete. 4) Significantly reduce the ground ash of sprayed concrete and castables, and increase ...

Examples

Embodiment 1

[0024] The invention provides a technical solution: a colored heat-resistant cement concrete mixed with silica micropowder and a preparation method thereof, comprising (according to mass percentage): 20% of Portland cement, 32% of coarse aggregate, and 30% of fine aggregate %, fly ash 6%, silica powder 3%, pigment 2%, color hardener 0.02%, composite water reducer 1%, sodium gluconate retarder 0.05%, and the balance is water.

[0025] The present invention also provides a preparation method of colored heat-resistant cement concrete mixed with silicon micropowder, comprising the following steps:

[0026] S1: Weigh portland cement, coarse aggregate and fine aggregate according to the weight ratio and pre-dry mix them to a uniform state, then take them out to obtain component A;

[0027] S2: put the fly ash, silica powder, pigment, and coloring hardener into a ball mill for mixed grinding, and take out to obtain component B;

[0028] S3: Add the composite water reducer and water ...

Embodiment 2

[0033] The invention provides a technical solution: a colored heat-resistant cement concrete mixed with silica micropowder and a preparation method thereof, comprising (according to mass percentage): 20% of Portland cement, 32% of coarse aggregate, and 30% of fine aggregate %, fly ash 6%, silica powder 4%, pigment 2%, color hardener 0.02%, composite water reducer 1%, sodium gluconate retarder 0.05%, and the balance is water.

[0034] The present invention also provides a preparation method of colored heat-resistant cement concrete mixed with silicon micropowder, comprising the following steps:

[0035] S1: Weigh portland cement, coarse aggregate and fine aggregate according to the weight ratio and pre-dry mix them to a uniform state, then take them out to obtain component A;

[0036] S2: put the fly ash, silica powder, pigment, and coloring hardener into a ball mill for mixed grinding, and take out to obtain component B;

[0037] S3: Add the composite water reducer and water ...

Embodiment 3

[0042] The invention provides a technical solution: a colored heat-resistant cement concrete mixed with silica micropowder and a preparation method thereof, comprising (according to mass percentage): 20% of Portland cement, 32% of coarse aggregate, and 30% of fine aggregate %, fly ash 6%, silica powder 5%, pigment 2%, color hardener 0.02%, composite water reducer 1%, sodium gluconate retarder 0.05%, and the balance is water.

[0043] The present invention also provides a preparation method of colored heat-resistant cement concrete mixed with silicon micropowder, comprising the following steps:

[0044]S1: Weigh portland cement, coarse aggregate and fine aggregate according to the weight ratio and pre-dry mix them to a uniform state, then take them out to obtain component A;

[0045] S2: put the fly ash, silica powder, pigment, and coloring hardener into a ball mill for mixed grinding, and take out to obtain component B;

[0046] S3: Add the composite water reducer and water a...

technical field

[0001] The invention relates to the technical field of concrete, in particular to a colored heat-resistant cement concrete mixed with silica micropowder and a preparation method thereof. Background technique

[0002] Microsilica powder can fill the pores between cement particles, and at the same time form a gel with the hydration product, and react with the alkaline material magnesium oxide to form a gel. Adding a proper amount of silica fume to cement-based concrete, mortar and refractory castables can play the following roles: 1) Significantly improve the properties of compression resistance, flexural resistance, impermeability, anti-corrosion, impact resistance and wear resistance. 2) It has the functions of water retention, preventing segregation, bleeding, and greatly reducing the resistance of concrete pumping. 3) Significantly prolong the service life of concrete. 4) Significantly reduce the ground ash of sprayed concrete and castables, and increase ...

Examples

Embodiment 1

[0024] The invention provides a technical solution: a colored heat-resistant cement concrete mixed with silica micropowder and a preparation method thereof, comprising (according to mass percentage): 20% of Portland cement, 32% of coarse aggregate, and 30% of fine aggregate %, fly ash 6%, silica powder 3%, pigment 2%, color hardener 0.02%, composite water reducer 1%, sodium gluconate retarder 0.05%, and the balance is water.

[0025] The present invention also provides a preparation method of colored heat-resistant cement concrete mixed with silicon micropowder, comprising the following steps:

[0026] S1: Weigh portland cement, coarse aggregate and fine aggregate according to the weight ratio and pre-dry mix them to a uniform state, then take them out to obtain component A;

[0027] S2: put the fly ash, silica powder, pigment, and coloring hardener into a ball mill for mixed grinding, and take out to obtain component B;

[0028] S3: Add the composite water reducer and water ...

Embodiment 2

[0033] The invention provides a technical solution: a colored heat-resistant cement concrete mixed with silica micropowder and a preparation method thereof, comprising (according to mass percentage): 20% of Portland cement, 32% of coarse aggregate, and 30% of fine aggregate %, fly ash 6%, silica powder 4%, pigment 2%, color hardener 0.02%, composite water reducer 1%, sodium gluconate retarder 0.05%, and the balance is water.

[0034] The present invention also provides a preparation method of colored heat-resistant cement concrete mixed with silicon micropowder, comprising the following steps:

[0035] S1: Weigh portland cement, coarse aggregate and fine aggregate according to the weight ratio and pre-dry mix them to a uniform state, then take them out to obtain component A;

[0036] S2: put the fly ash, silica powder, pigment, and coloring hardener into a ball mill for mixed grinding, and take out to obtain component B;

[0037] S3: Add the composite water reducer and water ...

Embodiment 3

[0042] The invention provides a technical solution: a colored heat-resistant cement concrete mixed with silica micropowder and a preparation method thereof, comprising (according to mass percentage): 20% of Portland cement, 32% of coarse aggregate, and 30% of fine aggregate %, fly ash 6%, silica powder 5%, pigment 2%, color hardener 0.02%, composite water reducer 1%, sodium gluconate retarder 0.05%, and the balance is water.

[0043] The present invention also provides a preparation method of colored heat-resistant cement concrete mixed with silicon micropowder, comprising the following steps:

[0044]S1: Weigh portland cement, coarse aggregate and fine aggregate according to the weight ratio and pre-dry mix them to a uniform state, then take them out to obtain component A;

[0045] S2: put the fly ash, silica powder, pigment, and coloring hardener into a ball mill for mixed grinding, and take out to obtain component B;

[0046] S3: Add the composite water reducer and water a...