Guangdong Shijia Goujian Building Materials Technology Co., Ltd.

Product Features

1. Early and High Strength: Compressive strength of 20 Mpa or more after 1 day; 30 Mpa or more after 3 days; 55 Mpa or more after 28 days.

2. Minimal expansion: 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 equipment.

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

5. Crack Resistance: Cracking phenomena may occur during on-site use due to factors such as uncertain water addition, fluctuating environmental temperatures, and limited curing conditions.

6. Durable: Under millions of fatigue tests and 50 freeze-thaw cycles, there is no significant change in strength. After being soaked in engine oil for 30 days, the strength increases notably.

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

Usage Instructions

Step: Basic Processing

The base surface should be roughened. Clean the base surface, free from debris such as gravel, loose mortar, floating dust, oil stains, and release agents. Before grouting,24 hours, the base surface should be fully moistened. Remove any standing water 1 hour before grouting.

Step 2: Touch and Feel

1. Set up molds according to the grouting construction drawings. Seal the joints between the molds and the foundation, as well as between molds themselves, with cement slurry and tape to ensure the overall mold is watertight.

2. The horizontal distance around the template and base should be maintained at approximately 100mm for ease of 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 Preparation

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 (drills with electric drill attachments are strictly prohibited). When stirring manually, first mix with 2/3 of the water for 2 minutes, then add the remaining water and stir until uniform.

3. The amount to stir each time should be determined by the usage, ensuring 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 employed.

2. Illustrations of Common Grouting Methods

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

① During secondary grouting, the grout should be applied from multiple points on one side or both 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 the grouting time should be minimized as much as possible.

③ Absolutely no vibration is allowed during the grouting process. If necessary, use a grouting booster to push the CGM grouting material along the bottom of the grouting layer. It is strictly prohibited 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, cut a 45-degree angle outward along the edge of the equipment within 3-6 hours post-grouting (as shown in the diagram) to prevent cracks from forming at the free end. If edge cutting is not possible, smooth the grouting layer surface with a trowel within 3-6 hours after grouting.

⑤ When the thickness of the grouting layer exceeds 150mm, use reinforced high-strength, non-shrinkage grouting material with gravel aggregates.

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

Step 5: Maintenance

1. After grouting is complete, immediately cover with wet straw or mineral wool blankets within 30 minutes and maintain moisture.

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