Anti-corrosion saline-alkaline-tolerant concrete and preparation method thereof

A concrete and saline-alkali-resistant technology, applied in the field of corrosion-resistant concrete, can solve problems such as the decline of anti-corrosion effect, and achieve the effect of reducing erosion damage and improving corrosion resistance.

Inactive Publication Date: 2022-01-18
深圳市恒星建材有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] For the above-mentioned anti-corrosion and saline-alkali-resistant concrete, the invention believes that although mineral admixtures and other substances can play a certain anti-corrosion effect in the early stage, they cannot prevent corrosion ions such as chloride ions and sulfate radicals from adding to the concrete as time goes on. The internal migration structure slows down and stops, and the anti-corrosion effect will gradually decline

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  • Anti-corrosion saline-alkaline-tolerant concrete and preparation method thereof
  • Anti-corrosion saline-alkaline-tolerant concrete and preparation method thereof

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Embodiment 1

[0035] The anti-corrosion and salt-alkali-resistant concrete of this embodiment is made of the following raw materials: aggregate 1500kg, sand 600kg, cement 150kg, fly ash 50kg, silica fume 20kg, fiber 5kg, water 100kg, water reducing agent 6kg, expansion agent 2kg, preservative 12kg.

[0036] Among them, the preservative is composed of ethylenediamine oleate, bisphenol A diallyl ether, and β-diketone compound in a mass ratio of 10:10:5. Aggregate is 10-25cm continuous gradation. The cement is ordinary Portland cement, grade 42.5r. Fly ash is a first-class fly ash. The fibers are polypropylene fibers with an average length of 25 mm. The water reducer is a high-efficiency polycarboxylate water reducer. The expansion agent is light-burned magnesium oxide. The β-diketone compound is ethyl acetoacetate.

[0037] The preparation method of the anticorrosion saline alkali resistant concrete of the present embodiment, comprises the steps:

[0038] S1: Weigh the corresponding ra...

Embodiment 2

[0041] The anti-corrosion and salt-alkali-resistant concrete of this embodiment is made of the following raw materials: aggregate 1800kg, sand 800kg, cement 200kg, fly ash 80kg, silica fume 35kg, fiber 10kg, water 130kg, water reducing agent 8kg, expansion agent 5kg, preservative 25kg.

[0042] Among them, the preservative is composed of ethylenediamine oleate, bisphenol A diallyl ether, and β-diketone compound in a mass ratio of 15:17:7. Aggregate is 10-25cm continuous gradation. The cement is ordinary Portland cement, grade 42.5r. Fly ash is a first-class fly ash. The fibers are polypropylene fibers with an average length of 25 mm. The water reducer is a high-efficiency polycarboxylate water reducer. The expansion agent is light-burned magnesium oxide.

[0043] The preparation method of the anticorrosion saline alkali resistant concrete of the present embodiment, comprises the steps:

[0044] S1: Weigh the corresponding raw materials according to the formula amount, mi...

Embodiment 3

[0047]The anti-corrosion and salt-alkali-resistant concrete of this embodiment is made of the following raw materials: aggregate 1650kg, sand 700kg, cement 180kg, fly ash 60kg, silica fume 30kg, fiber 8kg, water 120kg, water reducing agent 7kg, expansion agent 3.5kg, preservative 20kg.

[0048] Among them, the preservative is composed of ethylenediamine oleate, bisphenol A diallyl ether, and β-diketone compound in a mass ratio of 12:16:5.5. Aggregate is 10-25cm continuous gradation. The cement is ordinary Portland cement, grade 42.5r. Fly ash is a first-class fly ash. The fibers are polypropylene fibers with an average length of 25 mm. The water reducer is a high-efficiency polycarboxylate water reducer. The expansion agent is light-burned magnesium oxide.

[0049] The preparation method of the anticorrosion saline alkali resistant concrete of the present embodiment, comprises the steps:

[0050] S1: Weigh the corresponding raw materials according to the formula amount, ...

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Abstract

The invention relates to the technical field of anti-corrosion concrete, and particularly discloses anti-corrosion and saline-alkaline-tolerant concrete and a preparation method thereof. The anti-corrosion and saline-alkaline-tolerant concrete is mainly prepared from the following raw materials in parts by weight: 1500-1800 parts of aggregate, 600-800 parts of sand, 150-200 parts of cement, 50-80 parts of fly ash, 20-35 parts of silica fume, 5-10 parts of fibers, 100-130 parts of water, 6-8 parts of a water reducing agent, 2-5 parts of an expanding agent and 12-25 parts of a preservative, wherein the preservative is prepared from the sum of the mass of ethylenediamine oleate and bisphenol A diallyl ether and a beta-diketone compound according to the mass ratio of (20 to 32) to (5 to 7). The anti-corrosion and salt-tolerant concrete can be used for building construction in a saline-alkali environment, and has the advantage of good corrosion resistance.

Description

technical field [0001] The present application relates to the technical field of corrosion-resistant concrete, more specifically, it relates to a corrosion-resistant salt-alkali-resistant concrete and a preparation method thereof. Background technique [0002] my country has a vast geography, including a large number of coastal saline land and inland salt lake land. The soil in these areas contains high levels of corrosive ions such as chloride ions and sulfate ions. Construction projects in these areas will be greatly affected. limit. In order to solve the concrete corrosion problem of buildings, structures, roads and bridges and other infrastructure facilities in strong saline-alkali and salt lake areas, technicians have researched and developed corrosion-resistant concrete. [0003] Some of these corrosion-resistant concretes reduce the voids and cracks in the concrete by adding air-entraining agents to increase the compactness of the concrete, prevent chloride ions and s...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B28/04C04B24/12C04B103/61C04B111/23C04B111/20
CPCC04B28/04C04B40/0039C04B24/005C04B2103/61C04B2111/23C04B2111/20C04B14/06C04B18/08C04B18/146C04B16/0633C04B2103/302C04B22/066C04B24/121C04B24/023C04B24/008
Inventor 俞裕星许广森邹承忠
Owner 深圳市恒星建材有限公司
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