Corrosion-resistant concrete material and preparation method thereof

A technology for corrosion-resistant concrete and Portland cement, applied in the field of concrete materials, can solve problems such as affecting engineering safety, affecting concrete durability, and increasing concrete corrosion progress.

Inactive Publication Date: 2020-07-07
东莞市易发混凝土有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, during the use of concrete, it is bound to face the erosion of the external environment, which affects the durability of concrete structures.
For example, continuous acidified air, high humidity, high salt and high alkali environment all increase the progress of concrete corrosion, and phenomena such as chloride salt corrosion, acid corrosion and pitting corrosion occur, resulting in a decline in the durability of concrete structures and seriously affecting engineering. Safety

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] In this embodiment, a corrosion-resistant concrete material includes the following components in parts by weight: 100 parts of Portland cement, 55 parts of water, 200 parts of crushed stone, 130 parts of sand, 25 parts of fly ash, and 13 parts of admixture , 3 parts of composite water reducing agent, 12 parts of calcium oxide-calcium sulfoaluminate composite expansion agent.

[0029] Further, each admixture includes the following components by weight: 7 parts of natural zeolite powder, 3 parts of barium sulfide powder, and 0.3 part of air-entraining agent.

[0030] Further, the Portland cement is Portland cement with a strength grade of 42.5.

[0031] Further, the crushed stone is continuously graded crushed stone with a particle size of 5-15 mm, the sand is river sand, and the river sand is composed of coarse sand with a fineness modulus of 2.9-2.5 and a fineness modulus of 2.9-2.5. The fine sand whose number is 2.1-1.6 is composed according to the mass ratio of 3.8:1...

Embodiment 2

[0043] A corrosion-resistant concrete material, comprising the following components by weight: 90 parts of Portland cement, 50 parts of water, 170 parts of crushed stone, 120 parts of sand, 20 parts of fly ash, 11 parts of admixture, and composite water reducer 2 parts, 10 parts of calcium oxide-calcium sulfoaluminate composite expansion agent.

[0044] Further, each admixture includes the following components by weight: 6 parts of natural zeolite powder, 2 parts of barium sulfide powder, and 0.2 part of air-entraining agent.

[0045] Further, the Portland cement is Portland cement with a strength grade of 42.5.

[0046] Further, the crushed stone is continuously graded crushed stone with a particle size of 5-15 mm, the sand is river sand, and the river sand is composed of coarse sand with a fineness modulus of 2.9-2.5 and a fineness modulus of 2.9-2.5. The fine sand whose number is 2.1-1.6 is composed according to the mass ratio of 3.5:1.

[0047] Further, the fly ash is Cl...

Embodiment 3

[0058] In this embodiment, a corrosion-resistant concrete material includes the following components in parts by weight: 110 parts of Portland cement, 65 parts of water, 230 parts of gravel, 140 parts of sand, 30 parts of fly ash, and 16 parts of admixture , 5 parts of composite water reducer, 15 parts of calcium oxide-calcium sulfoaluminate composite expansion agent.

[0059] Further, each admixture includes the following components by weight: 10 parts of natural zeolite powder, 4 parts of barium sulfide powder, and 0.4 part of air-entraining agent.

[0060] Further, the crushed stone is continuously graded crushed stone with a particle size of 5-15 mm, the sand is river sand, and the river sand is composed of coarse sand with a fineness modulus of 2.9-2.5 and a fineness modulus of 2.9-2.5. The fine sand whose number is 2.1-1.6 is composed according to the mass ratio of 4:1.

[0061] Further, each part of the composite water reducer includes the following components by weigh...

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Abstract

The invention relates to the technical field of concrete materials, in particular to a corrosion-resistant concrete material and a preparation method thereof. The corrosion-resistant concrete materialis prepared from the following components in parts by weight: 90 to 110 parts of Portland cement, 70 to 100 parts of water, 170 to 230 parts of gravel, 120 to 140 parts of sand, 20 to 30 parts of flyash, 11 to 16 parts of additive, 2 to 5 parts of composite water reducing agent and 10 to 15 parts of calcium oxide-calcium sulphoaluminate composite expanding agent. The corrosion-resistant concretematerial has good corrosion resistance, impermeability and compressive strength and is long in service life; the preparation method is simple and efficient, operation and control are convenient, theproduct quality is stable, and industrial production is facilitated.

Description

technical field [0001] The invention relates to the technical field of concrete materials, in particular to a corrosion-resistant concrete material and a preparation method thereof. Background technique [0002] At present, concrete is widely used in structures such as buildings, bridges, dams and subsea tunnels. However, concrete must face the erosion of the external environment during its use, which affects the durability of concrete structures. For example, continuous acidified air, high humidity, high salt and high alkali environment all increase the progress of concrete corrosion, and phenomena such as chloride salt corrosion, acid corrosion and pitting corrosion occur, resulting in a decline in the durability of concrete structures and seriously affecting engineering. Safety. Therefore, how to improve the corrosion resistance and use safety of corrosion-resistant concrete materials has attracted more and more attention. Contents of the invention [0003] In order ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B28/04
CPCC04B28/04C04B2201/52C04B2111/20C04B14/02C04B14/06C04B14/047C04B18/08C04B22/064C04B22/14C04B2103/302C04B2103/304C04B22/00C04B22/085C04B24/125C04B24/045C04B24/16C04B24/38
Inventor 蔡启涌吴曙弘
Owner 东莞市易发混凝土有限公司
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