Product Features

1. Early and high strength: 1-day compressive strength ≥ 20 MPa; 3-day compressive strength ≥ 30 MPa; 28-day compressive strength ≥ 55 MPa.

2. Micro-expansive: Ensures tight contact between the equipment and foundation, with no shrinkage after secondary grouting.

3. High fluidity: Can fill all voids, meeting the requirements for secondary grouting of the equipment.

4. Anti-segregation: Overcomes the segregation phenomenon caused by excessive water addition during on-site use.

5. Crack Resistance: Cracking phenomenon may occur during field use due to uncertain water addition, varying environmental temperatures, and limited curing conditions.

6. Durable: After 1 million fatigue tests and 50 freeze-thaw cycles, there is no significant change in strength. The strength is notably improved after soaking in engine oil for 30 days.

7. Suitable for winter construction: Outdoor work is permitted at temperatures as low as -10°C.

Usage Instructions

Step: Basic Processing

The base surface should be roughened. Clean the base surface, ensuring there is no debris, float, loose dust, oil stains, or release agents. Before grouting,24 hours, the base surface should be sufficiently moistened. One hour before grouting, remove any accumulated water.

Step 2: Touch and Feel

1. Set up forms according to the grouting construction drawing. Seal the joints between forms and the foundation, as well as between forms, using cement slurry and tape to ensure the entire form set is watertight.

2. The horizontal distance around the template and base should be maintained at approximately 100mm to facilitate grouting work.

3. The template top elevation should be 50mm higher than the surface of the equipment base.

4. In case of leakage during grouting, it should be addressed promptly.

Step 3: Grout Material Mixing

1. Generally, mix with water according to a standard of 11-13% for general reinforced type, and 9-10% for pebble reinforced type.

2. Recommend using mechanical stirring, which typically takes 1-2 minutes (handheld drills are strictly prohibited for stirring). When using manual stirring, first mix with 2/3 of the water for 2 minutes, then add the remaining water and stir until uniform.

3. The mixing quantity should be determined based on the usage amount to ensure the material is used up within 40 minutes.

4. It is strictly prohibited to add any admixtures or external additives to the CGM grouting material during on-site use.

Step 4: Grouting Construction Method

1. For longer equipment or track foundations, segmented construction should be adopted.

2. Illustrations of Several Common Grouting Methods

3. During the secondary grouting, the following requirements should be met.

① During secondary grouting, the grouting should be performed from multiple points on one side or adjacent sides until it overflows from the opposite side, to facilitate the exhaust of air during the grouting process. Grouting from all four sides simultaneously is not allowed.

② After grouting begins, it must be carried out continuously without interruption. And try to shorten the grouting time as much as possible.

During grouting, vibration is strictly prohibited. If necessary, use a grouting booster to push the CGM grouting material along the bottom of the grouting layer. It is strictly forbidden to push from the middle or upper part of the grouting layer to ensure the homogeneity of the grouting layer.

④ After the equipment foundation grouting is completed, a 45-degree bevel should be cut along the equipment edge within 3-6 hours post-grouting (as shown in the image below) to prevent cracks from forming at the free end. If edge cutting is not possible, the grouting layer surface should be smoothed with a trowel within 3-6 hours after grouting.

⑤ When the thickness of the grouting layer exceeds 150mm, use a reinforced aggregate type high-strength, non-shrink grouting material.

⑥ When the amount of grout for equipment foundation is large, mechanical mixing should be used for the aggregate-reinforced grout to ensure the grouting construction.

Step 5: Maintenance

1. After grouting is completed, cover it immediately with wet straw or rock wool within 30 minutes, and maintain its moisture.

2. During winter construction, the maintenance measures should also comply with the current "Code for Construction and Acceptance of Reinforced Concrete Engineering."