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Superfluid self-compacting concrete and preparing method thereof

A technology of self-compacting concrete and superfluidity, which is applied in the field of building materials to achieve the effects of good fluidity and self-compacting, low price, and simple and controllable methods

Active Publication Date: 2015-11-04
黄贺明
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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 non-bleeding and discrete phenomenon that can not only ensure ultra-high strength, high toughness, high durability, and volume stability, but also reduce cohesion, improve self-compacting and fluidity, and be environmentally friendly. , low-cost superfluid self-compacting concrete, aiming to solve the above-mentioned problems existing in the existing active powder concrete

Method used

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  • Superfluid self-compacting concrete and preparing method thereof
  • Superfluid self-compacting concrete and preparing method thereof
  • Superfluid self-compacting concrete and preparing method thereof

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preparation example Construction

[0038] Correspondingly, the embodiment of the present invention also provides a method for preparing superfluid self-compacting concrete, comprising the following steps:

[0039] S01. take each component by the formula of above-mentioned superfluid self-compacting concrete;

[0040] S02. Copper-plated steel fiber, cement, silicon powder, fly ash, mineral powder, limestone powder, and river sand are mixed to form a mixed material;

[0041] S03. Add high-efficiency water reducer and water to the above mixed material in sequence, carry out further mixing treatment, and then add sodium carbonate powder for mixing.

[0042] Specifically, the formulation of the superfluid self-compacting concrete and the preferred content and types of each component in the formulation are as described above, and will not be repeated here to save space.

[0043] In the above step S02, the method of mixing copper-plated steel fiber, cement, silica powder, fly ash, mineral powder, limestone powder, an...

Embodiment 1

[0049] A superfluid self-compacting concrete, comprising the following formulation components in the following parts by weight:

[0050]

[0051] Wherein, the Portland cement is 52.5 grade Portland cement with a particle size of 30-60 μm; the particle size of the silica fume is 0.15 μm, wherein SiO 2 The mass percentage content is more than 85%; the fly ash is Class II fly ash with a particle size of 10-30 μm; the mineral powder is S95 or above mineral powder with a particle size of 10-30 μm; the limestone The particle size of the powder is 30-60 μm; the particle size of the river sand is 0.16-4.75 mm; the steel fiber is copper-plated ultra-fine steel fiber with a diameter of 0.13-0.20 mm and a length of 6-18 mm.

[0052] The preparation method of the above-mentioned superfluid self-compacting concrete comprises the following steps:

[0053] S11. Weigh each component according to the formula of the above-mentioned superfluid self-compacting concrete;

[0054] S12. Add cop...

Embodiment 2

[0058] A superfluid self-compacting concrete, comprising the following formulation components in the following parts by weight:

[0059]

[0060] Wherein, the Portland cement is 52.5 grade Portland cement with a particle size of 30-60 μm; the particle size of the silica fume is 0.15 μm, wherein SiO 2 The mass percentage content is more than 85%; the fly ash is Class II fly ash with a particle size of 10-30 μm; the mineral powder is S95 or above mineral powder with a particle size of 10-30 μm; the limestone The particle size of the powder is 30-60 μm; the particle size of the river sand is 0.16-4.75 mm; the steel fiber is copper-plated ultra-fine steel fiber with a diameter of 0.13-0.20 mm and a length of 6-18 mm.

[0061] The preparation method of the above-mentioned superfluid self-compacting concrete comprises the following steps:

[0062] S21. take each component by the formula of above-mentioned superfluid self-compacting concrete;

[0063] S22. Add copper-plated stee...

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Abstract

The invention belongs to the field of building materials and provides superfluid self-compacting concrete and a preparing method thereof. The superfluid self-compacting concrete comprises, by weight, 500-650 parts of Portland cement, 150-210 parts of ganister sand, 100-130 parts of coal ash, 85-105 parts of mineral powder, 45-60 parts of limestone flour, 1000-1300 parts of river sand, 24-30 parts of high-efficiency slushing agents, 8-15 parts of sodium carbonate powder, 150-180 parts of water and 80-160 parts of steel fiber. The superfluid self-compacting concrete has the advantages of being superhigh in strength, high in tenacity and durability and stable in size. Cohesiveness can be reduced, self-compacting performance and mobility can be improved, bleeding and dispersing phenomena do not exist, environment friendliness is achieved, and cost is low.

Description

technical field [0001] The invention belongs to the field of building materials, in particular to a superfluid self-compacting concrete and a preparation method thereof. Background technique [0002] Active powder concrete is a new type of concrete material with ultra-high strength, high toughness, high durability and stable volume developed by Western countries such as France in the early 1990s. The performance of this material is divided into 200MPa and 500MPa, 800MPa class. The main principle is to use the bulk density principle to design the concrete material components, increase the interface strength and density by reducing the volume ratio between particles, and adjust the flexural performance through steel fibers. At present, the main domestic application and promotion level is 200MPa, the performance compressive index can reach 120-200MPA, the flexural strength can reach 14-40MPA, the elastic modulus is above 45GPa, the impermeability is generally above P30, and th...

Claims

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Application Information

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IPC IPC(8): C04B28/04C04B14/06
Inventor 黄贺明刘福财王鸣珂李斌周思晴孙俊阳郭宗林
Owner 黄贺明
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