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Concrete and preparation method thereof

A concrete and cement technology, applied in the field of concrete and its preparation, to improve mechanical properties, reduce the amount of mixing water, and alleviate the contradiction between supply and demand

Active Publication Date: 2020-01-07
HOHAI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a concrete and its preparation method, which can at least reduce building energy consumption, improve the mechanical properties of concrete, and alleviate the problem of river sand shortage

Method used

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  • Concrete and preparation method thereof
  • Concrete and preparation method thereof
  • Concrete and preparation method thereof

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Experimental program
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Effect test

Embodiment 1

[0026] The concrete material that the embodiment of the present invention provides comprises the raw material of following weight portion:

[0027] 50 parts of cement;

[0028] 20 parts of silica fume;

[0029] 20 parts of fly ash;

[0030] 10 parts of slag fine powder;

[0031] 140 parts of river sand with a fineness modulus of 2.2-2.5 and a mud content of 1%-5%;

[0032] 0 parts of desert sand with a diameter ranging from 0.25 to 0.05 mm;

[0033] 15 parts of anti-rust steel fibers with a diameter of 0.1-0.3 mm, a length of 10-15 mm, and a tensile strength ≥ 2850 MPa;

[0034] 3 parts of polycarboxylate superplasticizer;

[0035] 15 parts of water.

[0036] Wherein, the anti-rust steel fiber may be copper-plated steel fiber.

[0037] The preparation method of concrete in the present embodiment comprises the steps:

[0038] Prepare cement, silica fume, fly ash, slag powder, anti-rust steel fiber, river sand and desert sand according to the above weight parts, add them...

Embodiment 2

[0043] The difference between this embodiment and embodiment 1 is that the concrete is prepared by mixing the following raw materials in parts by weight:

[0044] 50 parts of cement;

[0045] 20 parts of silica fume;

[0046] 20 parts of fly ash;

[0047] 10 parts of slag fine powder;

[0048] 105 parts of river sand with a fineness modulus of 2.2-2.5 and a mud content of 1%-5%;

[0049] 35 parts of desert sand with a diameter ranging from 0.25 to 0.05 mm;

[0050] 15 parts of anti-rust steel fibers with a diameter of 0.1-0.3 mm, a length of 10-15 mm, and a tensile strength ≥ 2850 MPa;

[0051] 3 parts of polycarboxylate superplasticizer;

[0052] 15 parts of water.

[0053] Wherein, the anti-rust steel fiber may be copper-plated steel fiber.

[0054] The preparation method of concrete in the present embodiment comprises the steps:

[0055] Prepare cement, silica fume, fly ash, slag powder, anti-rust steel fiber, river sand and desert sand according to the above weight...

Embodiment 3

[0061] The difference between this embodiment and embodiment 1 is that the concrete is prepared by mixing the following raw materials in parts by weight:

[0062] 50 parts of cement;

[0063] 20 parts of silica fume;

[0064] 20 parts of fly ash;

[0065] 10 parts of slag fine powder;

[0066] 70 parts of river sand with a fineness modulus of 2.2-2.5 and a mud content of 1%-5%;

[0067] 70 parts of desert sand with a diameter ranging from 0.25 to 0.05 mm;

[0068] 15 parts of anti-rust steel fibers with a diameter of 0.1-0.3 mm, a length of 10-15 mm, and a tensile strength ≥ 2850 MPa;

[0069] 3 parts of polycarboxylate superplasticizer;

[0070] 15 parts of water.

[0071] Wherein, the anti-rust steel fiber may be copper-plated steel fiber.

[0072] The preparation method of concrete in the present embodiment comprises the steps:

[0073] Prepare cement, silica fume, fly ash, slag powder, anti-rust steel fiber, river sand and desert sand according to the above weight pa...

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Abstract

The invention discloses concrete and a preparation method thereof. The concrete comprises the following components in parts by weight: 50 parts of cement, 20 parts of silica fume, 20 parts of fly ash,10 parts of superfine slag powder, 15-45 parts of antirust steel fibers, 15 parts of water, 3 parts of a polycarboxylate superplasticizer and 140 parts of desert sand and / or river sand. The preparation method comprises the following steps: mixing the components, adding the mixture into a stirrer, and stirring to a specified collapse degree to obtain a mixture; moulding, removing a mold after themixture is solidified and formed, performing box girder steam curing and watering curing in sequence to obtain the concrete with the compressive strength exceeding 100 MPa, the performance requirementof a high-performance building is met, and the concrete is suitable for application and popularization. Building energy consumption can be reduced, the mechanical property of concrete is improved, and the problem of shortage of the river sand is relieved.

Description

technical field [0001] The invention relates to the field of concrete preparation, in particular to a concrete and a preparation method thereof. Background technique [0002] In recent years, with the development of society and the rapid advancement of urbanization, there are more and more high-rise and super high-rise buildings in inland areas, and the proportion of building energy consumption in the total energy consumption of society is increasing. Due to irreplaceable advantages such as low price and simple preparation, concrete is still the most widely used man-made material in the world today. As the demand for building performance in engineering increases, the demand for concrete also increases. How to improve the mechanical properties of concrete and reduce building energy consumption is one of the current problems that need to be solved urgently. [0003] At present, river sand is one of the essential components for the preparation of concrete. Due to the sharp inc...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B28/04
CPCC04B28/04C04B2201/50C04B2201/52C04B18/08C04B18/141C04B14/48C04B14/068C04B14/06C04B14/062C04B2103/302
Inventor 李田雨杨恒李伟华刘小艳刘力余瑾瑶刘彦琦杨博凯夏苏鲁
Owner HOHAI UNIV
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