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A sea sand coating slurry capable of curing chloride ions and its strengthening method

A technology of chloride ion and sea sand, which is applied in the field of building materials to achieve the effect of improving compactness, tight combination, and broad application prospects

Active Publication Date: 2020-09-22
UNIV OF JINAN
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the sea sand has not been treated after all. If there is a problem with the protective layer of the components, a huge safety accident will occur in the entire building.

Method used

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  • A sea sand coating slurry capable of curing chloride ions and its strengthening method
  • A sea sand coating slurry capable of curing chloride ions and its strengthening method
  • A sea sand coating slurry capable of curing chloride ions and its strengthening method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0016] Composition of coating slurry:

[0017]

[0018] The water-cement ratio is 0.5, and the sea sand is processed in the following four steps: ①Put the sea sand that has been filtered out of shells and other sundries into the vibrating screen and spread the thickness of about 0.5cm to 1.5cm. Inject the coating slurry into the spraying mortar machine; ② Turn on the vibrating screen and start spraying the coating slurry, wait for the sea sand within the spraying range to vibrate 4 to 6 times and then change to the next position for spraying; ③ Spread the coated sea sand to air dry Until the surface moisture basically disappears; ④ The air-dried sea sand is maintained at a constant temperature for 7h to 10h. Test the content of chloride ions in the final sea sand.

Embodiment 2

[0020] Composition of coating slurry

[0021]

[0022] The water-cement ratio is 0.5, and the sea sand is processed in the following four steps: ①Put the sea sand that has been filtered out of shells and other sundries into the vibrating screen and spread the thickness of about 0.5cm to 1.5cm. Inject the coating slurry into the spraying mortar machine; ② Turn on the vibrating screen and start spraying the coating slurry, wait for the sea sand within the spraying range to vibrate 4 to 6 times and then change to the next position for spraying; ③ Spread the coated sea sand to air dry Until the surface moisture basically disappears; ④ The air-dried sea sand is maintained at a constant temperature for 7h to 10h. Test the content of chloride ions in the final sea sand.

Embodiment 3

[0024] Composition of coating slurry

[0025]

[0026] The water-cement ratio is 0.5, and the sea sand is processed in the following four steps: ①Put the sea sand that has been filtered out of shells and other sundries into the vibrating screen and spread the thickness of about 0.5cm to 1.5cm. Inject the coating slurry into the spraying mortar machine; ② Turn on the vibrating screen and start spraying the coating slurry, wait for the sea sand within the spraying range to vibrate 4 to 6 times and then change to the next position for spraying; ③ Spread the coated sea sand to air dry Until the surface moisture basically disappears; ④ The air-dried sea sand is maintained at a constant temperature for 7h to 10h. Test the content of chloride ions in the final sea sand.

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Abstract

The invention provides a sea sand coating slurry capable of solidifying chloride ions and a reinforcing method. The sea sand coating slurry comprises the following components in percentage by mass: 75-95% of phosphoaluminate cement, 4-25% of a clay mineral admixture and 0.5-3% of a thickening time control agent; the water cement ratio is 0.4-0.5. The sea sand coating slurry provided by the invention can solidify the chloride ions in sea sand and can improve the strength of the sea sand; the sea sand treated by the sea sand coating slurry and the reinforcing method, which are provided by the invention, can be used normally and can be used for replacing the river sand completely equivalently; especially in constructional engineering in coastal areas and island areas, through use of the sea sand coating slurry and the reinforcing method, the engineering difficulty can be greatly reduced.

Description

technical field [0001] The invention provides a sea sand coating slurry capable of curing chloride ions and a strengthening method, belonging to the field of building materials. Background technique [0002] As the second largest marine mineral after oil and natural gas, sea sand has many uses, and one of the most important uses is as a raw material for engineering construction, especially for land reclamation and island construction in large-scale construction. However, sea sand contains a large amount of chloride ions. If it is not treated, it will corrode the steel bars, which will bring huge safety hazards to the project. At present, a large number of research results have been obtained on the application of sea sand and sea sand concrete, but there are few reports on the research on large-scale engineering applications. The current treatment methods for sea sand are mainly desalination of fresh water and addition of rust inhibitors. Desalination has a relatively large...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B28/34C04B20/10C04B14/06
CPCC04B14/068C04B20/1077C04B28/344C04B14/106C04B18/12C04B2103/0068
Inventor 王守德刘浩李树森赵丕琪芦令超程新
Owner UNIV OF JINAN