Cementitious Grout for offshore wind power Factory

GENERAL

The special grout for offshore wind power is a modified cement-based grouting material, which is developed via polymer and nano-reinforcement technology. The product has high fluidity, high early strength, ultra-high strength, ultra-durability, no shrinkage and high fatigue resistance.

Application

This product is suitable for offshore wind turbine single pile transition section, offshore wind turbine foundation jacket grouting, and offshore booster station jacket foundation grouting.

FEATURE

1.Ultra-high average compressive strength.

2.Ultra-high elastic modulus, bringing excellent hardening performance.

3.Excellent fatigue resistance.

4.Very high early strength.

5.Temporary supports can be quickly removed, allowing the equipment to be put into operation as soon as possible.

6.The strength increases rapidly under low temperature conditions.

7.No segregation or bleeding, ensuring consistent physical performance and preventing pump blockage.

8.Shorten installation time, reduce installation costs, and reduce pump pressure and wear.

PERFORMANCE

GB50448-2015 Technical Code for Application of Cementitious Grout

Items		Performance Indexes
Initial fluidity, mm	30min	>290		>340
Fluidity, mm	60min	>260		20
Fluidity, mm		>230		>260
Initial setting time, min		>120		>120
Visual inspection			No lumps
Specific gravity, kg/m3			2350-2500
Air content, %			w4
Bleeding rate			0
Vertical expansion rate, %	3h expansion value		0.2-0.2
Vertical expansion rate, %	The difference between the expansion value of 24h and 3h		0.02-0.5
Cube compressive strength, MPa	1d		>50
	3d		>85
	28d		>125
Static compression modulus of elasticity, GPa			>12
Static compression modulus of elasticity, GPa	1d, 28d		>45

Packaging and Storage

Packed in kraft paper with 50kg/bag, and pay attention to moisture-proof. The shelf life is 6 months

Construction Process

1. After the pipe piles are driven at sea and the jacket is installed, the columns and tubular piles of the jacket are sleeved with the pipe piles, and an annular space is formed between the columns and the pipe piles;

2. Block the bottom of abovementioned annular space, and set up a grouting pipeline connecting the annular space;

3. The grout is pumped through the grouting pipeline to grouting the annular space;

4. After the grouting in the annular space after grouting is completely filled, let it stand for a period of time to perform pressure shielding;

5. After the pressure shielding is completed, finish grouting and carry out curing

Cementitious Grout for offshore wind power