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A kind of cement for underwater engineering

A technology of underwater engineering and cement, which is applied in the field of building materials, can solve the problems that the anti-dispersion ability of cement needs to be further improved, and achieve the effect of excellent anti-dispersion performance

Active Publication Date: 2020-11-27
XINGNING LONGJIANG BUILDING MATERIAL IND CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the anti-dispersion ability of existing cement used in underwater engineering needs to be further improved.

Method used

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  • A kind of cement for underwater engineering
  • A kind of cement for underwater engineering

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] A cement for underwater engineering, which comprises the following components by weight:

[0024] 120 parts of cement (grade 42.5 Portland cement); 2 parts of polyacrylamide; 0.5 part of modified cellulose acetate.

[0025] Described modified cellulose acetate is prepared by the method comprising the following steps:

[0026] Add cellulose acetate, cardanol, 3-phenylpropionyl chloride and triethylamine in order in dioxane, then carry out heating and reflux reaction for 8h, after the reaction, add methanol dropwise in the reaction solution until no precipitation occurs; then take The modified cellulose acetate is obtained after the precipitation is dried. The dosage ratio of the dioxane, cellulose acetate, cardanol, 3-phenylpropionyl chloride and triethylamine is: 350mL:14g:10g:3g:7mL.

Embodiment 2

[0028] A cement for underwater engineering, which comprises the following components by weight:

[0029] Cement (grade 42.5 portland cement) 150 parts; polyacrylamide 2 parts; modified cellulose acetate 1 part.

[0030] Described modified cellulose acetate is prepared by the method comprising the following steps:

[0031] Add cellulose acetate, cardanol, 3-phenylpropionyl chloride and triethylamine in order in dioxane, then carry out heating and reflux reaction for 8h, after the reaction, add methanol dropwise in the reaction solution until no precipitation occurs; then take The modified cellulose acetate is obtained after the precipitation is dried. The dosage ratio of the dioxane, cellulose acetate, cardanol, 3-phenylpropionyl chloride and triethylamine is: 350mL:14g:10g:3g:7mL.

Embodiment 3

[0033] A cement for underwater engineering, which comprises the following components by weight:

[0034] 100 parts of cement (grade 42.5 Portland cement); 3 parts of polyacrylamide; 0.1 part of modified cellulose acetate.

[0035] Described modified cellulose acetate is prepared by the method comprising the following steps:

[0036] Add cellulose acetate, cardanol, 3-phenylpropionyl chloride and triethylamine in order in dioxane, then carry out heating and reflux reaction for 8h, after the reaction, add methanol dropwise in the reaction solution until no precipitation occurs; then take The modified cellulose acetate is obtained after the precipitation is dried. The dosage ratio of the dioxane, cellulose acetate, cardanol, 3-phenylpropionyl chloride and triethylamine is: 350mL:14g:10g:3g:7mL.

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Abstract

The invention relates to the technical field of building materials, in particular to cement for underwater engineering. The cement is prepared from, by weight, 100-150 parts of cement, 1-3 parts of polyacrylamide and 0.1-1 part of modified cellulose acetate. The cement for the underwater engineering has excellent dispersing resistance performance, during the underwater construction, the cement forthe underwater engineering can be used for reducing cement loss, thereby ensuring strength of cement concrete after construction.

Description

technical field [0001] The invention relates to the technical field of building materials, in particular to cement for underwater engineering. Background technique [0002] Cement is a powdery hydraulic inorganic gelling material, which can be mixed with water to form a slurry, which can be hardened in the air or better hardened in water, and can firmly bind sand, stone and other materials together. Widely used in civil construction, water conservancy, national defense and other projects. [0003] Cement for underwater engineering is a kind of special-purpose cement. During underwater construction, it is necessary to use cement with strong dispersion resistance to reduce the loss of cement and ensure the strength of cement concrete. However, the anti-dispersion ability of existing cement used in underwater engineering needs to be further improved. Contents of the invention [0004] The technical problem to be solved by the present invention is to provide cement for under...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B7/02C04B24/38C08B3/14C08B3/22C04B111/74
CPCC04B7/02C04B40/0039C04B2111/74C08B3/14C08B3/22C04B24/2652C04B24/383
Inventor 曾思林
Owner XINGNING LONGJIANG BUILDING MATERIAL IND CO LTD
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