Composite early-strength mineral admixture, and preparation method and application thereof

A mineral admixture and early-strength technology, applied in the field of building materials, can solve problems such as solid waste polluting the environment and concrete performance deterioration, and achieve low requirements for production equipment and personnel, high compressive strength, and short production cycles Effect

Active Publication Date: 2021-12-03
HENAN POLYTECHNIC UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] One of the purposes of the present invention is to provide a composite early-strength mineral admixture to solve t

Method used

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  • Composite early-strength mineral admixture, and preparation method and application thereof
  • Composite early-strength mineral admixture, and preparation method and application thereof
  • Composite early-strength mineral admixture, and preparation method and application thereof

Examples

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Example Embodiment

[0049] Preparation method of composite early mineral blending of the present invention: comprising the steps of:

[0050] Step S1, calcium carboxylate, aluminum sulfate, sulfate, sodium sulfate, sodium carbonate, and crucial lime are mixed in proportion to obtain the complex addition;

[0051] Step S2, the fly ash, ore powder, fluoride, and the composite extension are mixed in proportion to obtain the composite early mineral blend.

[0052] In a preferred embodiment of the preparation method of a composite early mineral blend of the present invention, calcium carbonate, aluminum sulfate, sulfate, sodium carbonate and cooked lime are mixed in a mixed machine, ratio of sodium sulfate, sodium carbonate and cooked lime. Top volume reaches 350m 2 / kg, refer to the national standard "concrete plus" GB 8076-2008 test, the compound extension is obtained after passing the test (see the accompanying drawings figure 1 .

[0053] In the preferred embodiment of the preparation method of compo...

Example Embodiment

[0072] Example 1

[0073] In this example, the composite early mineral blend comprises: fly ash 4000g, ore powder 3500g, fluoride gypsum 1000g and composite extension 1000g; wherein the composite extension comprises 2500 g of formate, 2,500 sulfate, sodium sulfate, sodium sulfate, sodium sulfate. Sodium carbonate 1500g and cooked lime 2000g.

[0074] The preparation method of the composite early mineral blend of the present embodiment includes the following steps:

[0075] Step S1, calcium carbonate 2500g, aluminum sulfate, 1500g sulfate, sodium sulfate, 1500g of sodium carbonate, mixed mixture in the mixing machine, the specific surface area of ​​350m 2 / kg, referring to the national standard "concrete plus" GB 8076-2008 test, after passing through the test, the compound extension is obtained;

[0076] Step S2, the fly ash 4000g, ore powder 3500g, fluoride 1000g, the composite extension 1000g, the mixer is added to uniform, refer to the construction industrial industry standard ...

Example Embodiment

[0083] Example 2

[0084] The first embodiment is different in that the composite early mineral blend material components are different, including 3000g of fly ash, 4000g of mineral powder, 1500g of fluoride gypsum, and composite extension; wherein the composite extension includes 2000G. , 3000 g of aluminum sulfate, 1000 g sodium sulfate, 1000 g of sodium carbonate and a cooked lime 3000g.

[0085] A method of preparing a composite early mineral blending material of the present embodiment: in Example 1.

[0086] The application of the composite early mineral blend of the present embodiment: the silicate cement is used as the gelation material 1; the silicate cement is mixed with the composite early mineral blend of the present embodiment, respectively, in accordance with different ratios. Preparation of gelling material 2 (gelling material 2 silicate cement 80 wt% and Example 1) 20 wt%), gelation material 3 (gelling material 3 silicate cement 60 wt) % And Example 1 composite earl...

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Abstract

The invention belongs to the technical field of building materials, and particularly relates to a composite early-strength mineral admixture, and a preparation method and application thereof. The composite early-strength mineral admixture comprises fly ash, mineral powder, fluorgypsum and a composite additive, wherein the mass ratio of the fly ash to the mineral powder to the fluorgypsum to the composite additive in the composite early-strength mineral admixture is (30-50): (30-50): (10-20): (10-20); and the composite admixture is prepared from, by weight, 20 to 30 parts of calcium formate, 20 to 30 parts of aluminum sulfate, 10 to 20 parts of sodium sulfate, 10 to 20 parts of sodium carbonate and 20 to 30 parts of slaked lime. The composite early-strength mineral admixture not only can realize the utilization of solid wastes and avoid environmental pollution, but also is beneficial to improving the compressive strength of cement concrete and improving the use performance of the concrete.

Description

technical field [0001] The invention belongs to the technical field of building materials, in particular to a composite early-strength mineral admixture and its preparation method and application. Background technique [0002] Solid waste, especially bulk solid waste, has the characteristics of large volume and wide area and prominent environmental impact. However, due to their own characteristics, when they are used alone in concrete, they often affect some properties of concrete. For example, fly ash will Affect the early strength of concrete, mineral powder will increase the characteristics of bleeding and shrinkage, thus affecting its usage. [0003] Therefore, further research on solid waste is needed to improve the performance of concrete while realizing the reuse of solid waste and avoiding environmental pollution caused by solid waste. Contents of the invention [0004] One of the objectives of the present invention is to provide a composite early-strength mineral...

Claims

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Application Information

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IPC IPC(8): C04B24/04C04B28/04C04B103/10
CPCC04B40/0042C04B28/04C04B2103/10C04B2201/50C04B2201/05C04B18/08C04B18/141C04B18/0445C04B22/148C04B22/147C04B22/10C04B22/064C04B24/04C04B14/06C04B14/02Y02W30/91
Inventor 王雨利孙路义王水山杨宇杰
Owner HENAN POLYTECHNIC UNIV
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