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Aluminophosphate cement-based foam concrete material resistant to sea fog erosion

A technology of foam concrete and aluminum phosphate, which is applied in the field of building materials, can solve the problems of easy damage and amazing damage speed, and achieve the effect of optimized pore structure, excellent performance and strong resistance to chloride ions

Active Publication Date: 2020-12-25
UNIV OF JINAN +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

And because of the loose and porous characteristics of foam concrete, it is more vulnerable to damage than dense structures such as cement in the erosion of sea fog, and the damage speed is astonishing.

Method used

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  • Aluminophosphate cement-based foam concrete material resistant to sea fog erosion
  • Aluminophosphate cement-based foam concrete material resistant to sea fog erosion
  • Aluminophosphate cement-based foam concrete material resistant to sea fog erosion

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0013] Mixed dry powder composition weight percent:

[0014]

[0015] The foaming agent added is 3% of the dry powder mass, the coagulation regulator is added 0.1% of the dry powder mass, the foam stabilizer is added 0.01% of the dry powder mass, and the water-material ratio is 0.75. Blocks with a thickness of 100 mm were made, and the strength was measured after curing for 28 days in a simulated sea fog environment. And the corrosion resistance coefficient of sulfate ion was measured under the condition of only sulfate ion attack.

Embodiment 2

[0017] Mixed dry powder composition weight percent:

[0018]

[0019] The foaming agent added is 4.5% of the dry powder mass, the coagulation regulator is added 0.25% of the dry powder mass, the foam stabilizer is added 0.1% of the dry powder mass, and the water-material ratio is 0.5. Blocks with a thickness of 100 mm were made, and the strength was measured after curing for 28 days in a simulated sea fog environment. And the corrosion resistance coefficient of sulfate ion was measured under the condition of only sulfate ion attack.

Embodiment 3

[0021] Mixed dry powder composition weight percent:

[0022]

[0023] The foaming agent added is 10% of the dry powder mass, the coagulation regulator is added 5% of the dry powder mass, the foam stabilizer is added 2% of the dry powder mass, and the water-material ratio is 0.4. Blocks with a thickness of 100 mm were made, and the strength was measured after curing for 28 days in a simulated sea fog environment. And the corrosion resistance coefficient of sulfate ion was measured under the condition of only sulfate ion attack.

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Abstract

The invention discloses sea fog corrosion-resistant phosphoaluminate cement based foam concrete. The foam concrete is prepared from a mixed dry material, a foam stabilizer, a thickening time control agent, a foaming agent and water according to a ratio of materials to the water as 0.4 to 0.75, wherein the mixed dry material is prepared from the following ingredients in weight percentage: 50% to 80% of phosphoaluminate based cement and 20% to 50% of silicoide mineral admixture; the thickening time control agent is 0.1% to 5% of the mixed dry material; the foam stabilizer is 0.01% to 2% of the mixed dry material; the foaming agent is 3% to 10% of the mixed dry material. The phosphoaluminate based cement based foam concrete disclosed by the invention has the advantages of extremely strong chloridion and sulfate ion corrosion resistance and application to the aspects of buildings, engineering and the like needing the foam concrete in coastal areas.

Description

technical field [0001] The invention relates to an aluminophosphate cement-based foam concrete material resistant to sea fog erosion, belonging to the technical field of building materials. Background technique [0002] The coastal areas of our country have a period of sea fog ranging from three months to five months every year. During the sea fog period, the sea fog not only affects the coastal areas, but sometimes even reaches tens of kilometers deep into the land. After the sea fog lands on land, it still maintains the characteristics of sea fog, which contains a large number of ions harmful to cement, such as chloride ions, sulfate ions, magnesium ions, etc. For coastal buildings and projects, there are threats that cannot be ignored, especially for buildings and projects that use foam concrete. Because of its porosity, harmful ions are more likely to enter the structure, and the hazard level needs to be raised several levels. Ordinary Portland cement foam concrete con...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B28/34C04B38/02C04B111/20C04B111/40
CPCC04B28/34C04B38/02C04B2111/20C04B2111/40C04B2201/20C04B2201/32C04B2201/50C04B18/12C04B14/22C04B18/145C04B2103/22C04B22/04C04B22/068C04B2103/48C04B18/141C04B14/106
Inventor 王守德刘浩刘裕付兴华侯双双
Owner UNIV OF JINAN
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