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Grouting material special for offshore wind power suction type foundation and preparation method of grouting material

A suction foundation and grouting material technology, which is applied in the field of special grouting materials for offshore wind power suction foundations and its preparation, can solve the problems of high construction cost and large amount of dry powder, and achieve the effects of reliable quality, high fluidity and cost reduction

Pending Publication Date: 2021-10-22
福建省中海福海洋科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The existing offshore wind turbine grouting materials, under the condition of the same volume, use more dry powder per unit volume of mixed slurry and use less water, so the construction cost is relatively high

Method used

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Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0030] A preparation method of special grouting material for offshore wind power suction foundation, said preparation method comprising the following steps:

[0031] S1: Accurately weigh the cement, fly ash and mineral powder in proportion, and then mix them evenly in the mixer. Before adding cement, fly ash and mineral powder, crush the cement, fly ash and mineral powder in advance and filtration treatment, that is, to avoid uneven mixing caused by agglomeration of cement, fly ash, and mineral powder, and to stir while stirring cement, fly ash and mineral powder, and the stirring speed is 500r / min. Stirring time 20 minutes;

[0032] S2: Add expansion agent, water reducer, fiber agent, anti-dispersant agent, flocculant and water retention agent to the product obtained in S1, continue to stir for 10-60min, add various types of additives to the mixture in turn, and each additive The feeding time is not less than 2 minutes, and the stirring is continued for 40 minutes after all ...

Embodiment 1

[0035] The raw material composition ratio of this grouting material is as follows: 220 parts of fly ash; 100 parts of cement; 60 parts of mineral powder; 1 part of expansion agent; 1 part of water reducing agent; 1 part of fiber agent; 1 part; 1 part of water retaining agent; 340 parts of water.

[0036] S1: The fly ash, cement and mineral powder are crushed and filtered according to the predetermined weight, and then the fly ash, cement and mineral powder are added to the mixer by stirring while feeding and mixed, and stirred The speed is 500r / min, and the stirring time is 20 minutes;

[0037] S2: Add expansion agent, water reducing agent, fiber agent, anti-dispersing agent, flocculant and water retention agent to the product obtained in S1 in sequence, and the feeding time of each additive is not less than 2 minutes to complete, and continue stirring for 40 Minutes, stirring speed is 350r / min;

[0038] S3: Add seawater to the product obtained in S2, and continue to stir fo...

Embodiment 2

[0040] The raw material composition ratio of this grouting material is as follows: 310 parts of fly ash; 110 parts of cement; 80 parts of mineral powder; 2 parts of expansion agent; 2 parts of water reducing agent; 2 parts of fiber agent; 2 parts; 2 parts of water-retaining agent; 360 parts of water.

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Abstract

The invention relates to the technical field of grouting materials, in particular to a grouting material special for an offshore wind power suction type foundation and a preparation method of the grouting material. The low-strength grouting material is prepared by taking cement, fly ash and mineral powder as main materials, adding additives with high fluidity, bleeding prevention, dispersion resistance, micro-expansion, segregation prevention and the like, and mixing and proportioning the above; the use amount of dry powder is reduced, the low-strength grouting material does not need aggregate, has the characteristics of high fluidity, no bleeding, no shrinkage, low strength, low density, no pollution, capability of being stirred by seawater and the like, can be used after a certain amount of seawater is added in a construction site and is uniformly stirred, and has the advantages of reliable quality, cost reduction, construction period shortening, convenience in use and the like in the aspect of construction.

Description

technical field [0001] The invention relates to the technical field of grouting materials, in particular to a special grouting material for offshore wind power suction foundations and a preparation method thereof. Background technique [0002] With the rapid development of my country's offshore wind power construction projects, the construction scale of offshore wind farms continues to expand, resulting in the construction area tending to be more far-reaching sea areas, and the requirements for the basic form of wind turbines are constantly improved and updated. In 2020, the suction foundation was successfully used in domestic offshore wind power for the first time, realizing foundation construction without external forces such as piling, which not only greatly saved offshore construction time, greatly reduced project cost, but also effectively controlled offshore construction risks. At the same time, the application of this technology effectively reduces the pollution of th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B28/04C04B111/70
CPCC04B28/04C04B2111/70C04B18/08C04B18/141C04B2103/0068C04B2103/302C04B2103/46C04B22/0026
Inventor 王少天关家椿陈斌游高宝
Owner 福建省中海福海洋科技有限公司