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Corrosion-resistant composite toughened concrete applied to marine environment and preparation method thereof

A marine environment and composite toughening material technology, which is applied in the field of marine environment corrosion-resistant composite toughening concrete and its preparation, can solve the problem of affecting the ecological construction effect of marine ecological engineering, being unable to resist long-term seawater immersion, erosion, and reducing the service life of facilities and use effects, etc., to achieve the effects of easy to meet preparation conditions, good solubility, and good toughness

Inactive Publication Date: 2017-08-08
FUJIAN JIANGXIA UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] With the large-scale economic and social construction in our country, especially the construction of island ecological engineering facilities is increasing day by day. At this stage, the facilities processed by ordinary waterproof concrete materials cannot resist the long-term immersion and erosion of seawater, which reduces the service life and use effect of the facilities.
As far as marine ecological engineering is concerned, the existing concrete facilities of marine ecological engineering are easily damaged due to seawater erosion, which affects the effect of ecological construction of marine ecological engineering.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0052] The ratio is as follows: 250 parts of cement, 5 parts of water reducer, 100 parts of water, 25 parts of composite toughening material, 15 parts of dispersant, 150 parts of filler, 400 parts of fine aggregate, 300 parts of coarse aggregate, and 300 parts of sea sand Parts, polyacrylate 15 parts.

[0053] The water reducer is a commercially available naphthalene series high-efficiency water reducer, and its water reducing rate is 18-24%.

[0054] The dispersant is methyl cellulose.

[0055] The preparation method of composite toughening material comprises the following steps:

[0056] (1) The activated halloysite nanotubes and thionyl chloride were stirred in an organic solvent P at 50 °C for 10 h, and then ultrasonicated at 75 °C for 13 h in a 40 kHz, 200 KW ultrasonic cleaner , and then centrifuged at a speed of 4500 rpm for 35 min, the solid was separated and washed with an organic solvent Q, and then dried in vacuum at 30 °C for 40 h;

[0057] (2) Mix the halloysit...

Embodiment 2

[0087] The ratio is as follows: 300 parts of cement, 4 parts of water reducing agent, 100 parts of water, 30 parts of composite toughening material, 10 parts of dispersant, 150 parts of filler, 450 parts of fine aggregate, 300 parts of coarse aggregate, 300 parts of sea sand Parts, polyacrylate 15 parts.

[0088] The water reducer is a commercially available naphthalene series high-efficiency water reducer, and its water reducing rate is 18-24%.

[0089] The dispersant is methyl cellulose.

[0090] The preparation method of composite toughening material comprises the following steps:

[0091] (1) The activated halloysite nanotubes and thionyl chloride were stirred in an organic solvent P at 55 °C for 15 h, and then ultrasonicated at 80 °C for 16 h in a 40 kHz, 200 KW ultrasonic cleaner , and then centrifuged at 5000 rpm for 40 min, the solid was separated and washed with organic solvent Q, and then dried in vacuum at 35 °C for 50 h;

[0092] (2) The halloysite nanotubes, bi...

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Abstract

The invention provides a corrosion-resistant composite toughened concrete applied to marine environment and a preparation method thereof. The concrete is prepared from the main raw materials in parts by weight: 200 to 300 parts of cement, 4 to 6 parts of water reducing agent, 100 to 120 parts of water, 20 to 30 parts of composite toughening material, 10 to 15 parts of dispersant, 100 to 200 parts of filler, 400 to 500 parts of fine aggregate, 200 to 300 parts of coarse aggregate, 300 to 500 parts of sea sand and 10 to 20 parts of polyacrylate. The corrosion resistance of the concrete can be increased by 50 to 80%, and the durability can be increased by 60% or more.

Description

technical field [0001] The invention belongs to the technical field of building materials, and in particular relates to a marine environment corrosion-resistant composite toughened concrete and a preparation method thereof. Background technique [0002] With the large-scale economic and social construction in our country, especially the construction of island ecological engineering facilities is increasing day by day. At this stage, the facilities processed by ordinary waterproof concrete materials cannot resist the long-term immersion and erosion of seawater, which reduces the service life and use effect of the facilities. Specifically for marine ecological engineering, the existing concrete facilities of marine ecological engineering are easily damaged due to seawater erosion, which affects the effect of ecological construction of marine ecological engineering. In order to improve the service life of concrete facilities in marine ecological engineering and effectively resi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B28/02C04B20/02C04B24/38C04B111/24
CPCC04B20/023C04B28/02C04B40/0039C04B2111/24C04B14/10C04B24/383C04B2103/302C04B2103/408C04B14/068C04B14/00C04B14/28C04B24/2641
Inventor 吴建国
Owner FUJIAN JIANGXIA UNIV
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