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Offshore wind power duct rack grouting material and construction method thereof

A grouting material, offshore wind power technology, applied in the field of cement-based materials

Active Publication Date: 2014-08-27
CCCC THIRD HARBOR ENG +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, there is currently no special grouting material that can meet the needs of wind power jacket grouting connection in China

Method used

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  • Offshore wind power duct rack grouting material and construction method thereof
  • Offshore wind power duct rack grouting material and construction method thereof
  • Offshore wind power duct rack grouting material and construction method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0084] The selection of component raw materials in the grouting material of embodiment 1

[0085] 1. Cement

[0086] 1.1 Cement 1: 52.5 grade ordinary Portland cement produced by Ningbo Conch Cement Co., Ltd. is used.

[0087] The performance index of cement 1 must meet the quality requirements of ordinary Portland cement with a strength grade of 52.5 specified in the standard GB175-2007 "General Portland Cement". Tests were carried out on the performance indicators of cement 1, such as mortar strength, stability, fineness, and setting time, and the test results of the performance indicators are shown in Table 1. It can be seen from Table 1 that the stability of the material is qualified. In addition, the measured density of cement is 3.15g / cm 3 .

[0088] 1.2 Cement 2: Use grade 52.5 sulfoaluminate cement produced by Tangshan Liujiu Cement Co., Ltd.

[0089] The performance index of cement 2 should meet the quality requirements of 52.5-grade sulphoaluminate cement specif...

Embodiment 2

[0134] The composite mineral superfine powder compact filling test of embodiment 2 grouting material

[0135] The invention adopts composite mineral superfine powder, which is composed of silicon powder, superfine fly ash and superfine slag powder. In order to explore the compact filling effect of composite mineral superfine powder on cement, different composite mineral superfine powders were mixed according to the design ratio, and the pure cement, the composite cementitious material mixed with composite mineral superfine powder and the compound mineral superfine powder were designed respectively. Composite gelling material 2 Three kinds of gelling materials (see Table 10). Table 11 is the comparison of water consumption and workability of three different cementitious material grouting materials, and Table 12 is the comparison of mechanical properties and durability of three different cementitious material grouting materials. The fluidity test is carried out in accordance wi...

Embodiment 3

[0146] The preparation of embodiment 3 grouting material 1

[0147] An ultra-high-performance offshore wind power jacket grouting material 1 is prepared. The composition and mass percentage of the grouting dry material are: Portland cement 25.0%, sulphoaluminate cement 5.0%, admixture 15.0%, and quartz sand 55.0%. The fineness modulus of the quartz sand is 3.4, and the composition is: 18.0% of 10-20 mesh quartz sand, 27.0% of 20-40 mesh quartz sand, 32.0% of 40-80 mesh quartz sand, and 23.0% of 80-120 mesh quartz sand. The admixture is composed of: 84.52% composite mineral ultra-fine powder (including 50.0% ultra-fine fly ash, 30.0% silicon powder, 20.0% ultra-fine slag powder), 2.00% water reducing agent, 1.50% polymer, 8.50% composite expansion agent %, defoamer 1.80%, early strength agent 1.50%, retarder 0.18%.

[0148] Such as Figure 1-2 As shown, the grouting dry material is pre-mixed and packaged, and the mixing water is directly added to the construction site and ful...

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Abstract

The invention provides an offshore wind power duct rack grouting material which comprises a dry material and water, wherein the dry material comprises the following components in percentage by mass: 25.0-40.0 percent of Portland cement, 1.0-5.0 percent of sulphoaluminate cement, 45.0-55.0 percent of quartz sand and 5.0-15.0 percent of admixture; the addition amount of the water is proper. The invention further provides a construction method of the offshore wind power duct rack grouting material. According to the offshore wind power duct rack grouting material and the construction method thereof, the material has the characteristics of high liquidity, high pumpability, super-high early-strength, ultrahigh strength, high durability, good water dispersion resistance, zero shrinkage and high fatigue resistance, can be conveyed by a rubber pipeline by adopting a pumping and grouting construction mode, is suitable for underwater grouting and is also suitable for grouting connection between the offshore wind power duct rack and steel pipe pile foundation.

Description

technical field [0001] The invention belongs to the technical field of cement-based materials, and relates to a preparation of an ultra-high-performance cement-based grouting material and a construction method thereof, in particular to an offshore wind power jacket grouting material and a construction method thereof. Background technique [0002] As a clean energy, offshore wind energy has broad application prospects. Developed countries began to develop offshore wind power in the 1990s, and the construction and operation of offshore wind farms has entered a stage of large-scale development. The construction of offshore wind farms is complex, with high technical requirements and difficult construction. At present, my country is still in the initial and exploratory stage, and is still in the early stage of industrial development. At present, the basic structures of offshore wind farms are mainly gravity type, single pile type, suction type, three-pile (multi-pile) jacket typ...

Claims

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Application Information

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IPC IPC(8): C04B28/06E02D15/06
Inventor 汪冬冬王成启张悦然陈庆陈克伟谷坤鹏聂亚楠周国然高建岳
Owner CCCC THIRD HARBOR ENG
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