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High-strength concrete plate and forming process thereof

A concrete and high-strength technology, applied in the field of building materials, can solve problems such as insufficient strength and insufficient compactness of concrete

Inactive Publication Date: 2021-05-11
ZHEJIANG MEIKE CLEAN ENERGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] Among them, the more common concrete slabs have been widely used in the construction field. Although the existing concrete slabs have high strength, they are only reflected in static pressure loads. Once subjected to a large dynamic impact, the strength will still be insufficient. In the case of concrete, this is because there will inevitably be problems in technology, raw materials and construction during the molding process of concrete, resulting in insufficient compactness of concrete during molding, resulting in insufficient strength

Method used

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  • High-strength concrete plate and forming process thereof
  • High-strength concrete plate and forming process thereof
  • High-strength concrete plate and forming process thereof

Examples

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Effect test

Embodiment 1

[0041] see figure 1 , a high-strength concrete plate, including the following raw materials in parts by weight: 150 parts of ordinary portland cement, 50 parts of mineral powder, 50 parts of fly ash, 400 parts of crushed stone, 200 parts of sand, and 100 parts of glass beads , 180 parts of water, 4 parts of polycarboxylate superplasticizer, 1 part of anti-crack fiber and 150 parts of thermally expandable microspheres.

[0042] The mineral powder is S95 grade mineral powder with a density of 2880Kg / m3.

[0043] The fly ash is class F class II fly ash with a density of 2150Kg / m3.

[0044] The crushed stone is 5-20mm continuous graded impact crushed stone, the needle flake content is not more than 5%, the mud content is not more than 0.5%, and the mud block content is not more than 0.2%. The parent rock is basalt or limestone, and the parent rock is compressive. The strength is not less than 130MPa.

[0045] The sand is zone II sand with a fineness modulus of 2.7-3.0, MB value i...

Embodiment 2

[0057] A high-strength concrete plate, comprising the following raw materials in parts by weight: 175 parts of ordinary portland cement, 65 parts of mineral powder, 65 parts of fly ash, 450 parts of gravel, 225 parts of sand, 110 parts of glass beads, 190 parts of water, 6 parts of polycarboxylate superplasticizer, 2 parts of anti-split fiber and 175 parts of heat-expandable microspheres.

[0058] The rest are consistent with Example 1.

Embodiment 3

[0060] A high-strength concrete plate, comprising the following raw materials in parts by weight: 200 parts of ordinary portland cement, 80 parts of mineral powder, 80 parts of fly ash, 500 parts of gravel, 250 parts of sand, 120 parts of glass beads, 200 parts of water, 8 parts of polycarboxylate superplasticizer, 3 parts of anti-crack fiber and 200 parts of thermally expandable microspheres.

[0061] The rest are consistent with Example 1.

[0062] see Figure 5 , the present invention can mix heat-expandable microspheres in the raw material before concrete molding, and directly embed them in the plate in a pre-embedded manner. When solidifying and forming in the mold, firstly, the method of external pressure is used, and secondly, the thermal expansion is triggered by heating. The expansion action of the microspheres inside the concrete forms multi-point extrusion inside, and the external pressure can effectively improve the compactness of the concrete. Peeling, at the sa...

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Abstract

The invention discloses a high-strength concrete plate and a forming process thereof, and belongs to the technical field of building materials. According to the invention, thermal expansion microspheres are mixed in raw materials before concrete is formed, the thermal expansion microspheres are directly embedded in the plate in a pre-embedding manner, and when the concrete is cured and formed in a mold, an external pressure applying manner is firstly adopted, and then the expansion action of the thermal expansion microspheres in the concrete is triggered by heating, so that multi-point extrusion is formed in the concrete, and the compactness of the concrete can be effectively improved in cooperation with external pressure. Meanwhile, the thermal expansion microspheres can achieve permanent shaping after expansion, stripping from the concrete can be avoided, and the thermal expansion microspheres can serve as coarse aggregate to remarkably reinforce the plate. On one hand, the static load capacity of the concrete plate is improved; and on the other hand, the pressure can be relieved in a dispersion mode when the concrete plate is subjected to large external impact, so that the concrete plate is effectively protected, and the strength of the concrete plate is indirectly improved.

Description

technical field [0001] The invention relates to the technical field of building materials, in particular to a high-strength concrete plate and its forming process. Background technique [0002] Concrete, referred to as concrete: refers to the collective name 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. [0003] Concrete is one of the most important civil engineering materials today. It is composed of cementitious materials, granular aggregates (also known as aggregates), water, and additives and admixtures added when necessary, prepared in a certain proportion, uniformly stirred, densely formed, cured and hardene...

Claims

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Application Information

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IPC IPC(8): C04B28/04E04C2/04B28B23/02B28B3/02B28B1/04
CPCC04B28/04B28B23/02B28B1/045B28B3/02E04C2/044C04B18/141C04B18/08C04B14/02C04B14/06C04B14/22C04B2103/302C04B2103/0068
Inventor 何海明陈卫民顾海华
Owner ZHEJIANG MEIKE CLEAN ENERGY
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