Primary Products: CGM High-Strength Non-Shrink Grouting Series, CGM-340, CGM-380, Epoxy Grouting, Epoxy Patching Mortar, CGM-320 Support Grouting, Quick-Fill Gravity Mortar, Adhesive Mortar, New Bridge Specification Prestressed Pipe Grouting Agent, CGM High-Strength Emergency Material; High-Strength Polymer Mortar, High-Performance Self-Leveling Mortar (Colorful), High-Strength Abrasion-Resistant Material, Steel Adhesive, Anchor Adhesive, Steel Encapsulation Grouting Adhesive, Joint Sealing Adhesive, Carbon Adhesive, Dry-Hanging Adhesive; Bonding Agent, Prestressed Pipe Grouting Agent, Abrasion-Resistant Floor Hardener, etc., as well as Product Master Batch...

CGM High-Strength Non-Shrink Grouting Material

Product Features: 1. Early and high strength – Compressive strength of ≥27 MPa after 1 day; ≥40 MPa after 3 days; and ≥60 MPa after 28 days.

2. Microexpansive

Ensure tight contact between the equipment and foundation, with no shrinkage after secondary grouting.

3. High fluidity

Fills all voids, meets the requirements for secondary grouting of equipment.

4. Anti-segregation

Overcame the phenomenon of segregation caused by excessive water addition during on-site use.

5. Crack Resistance

Cracking phenomena during on-site use due to uncertain water addition, fluctuating environmental temperatures, and limited curing conditions.

6. Durable

After over one million fatigue tests and 50 freeze-thaw cycles, the strength shows no significant change. The strength significantly improves after soaking in engine oil for 30 days.

7. Suitable for winter construction

Outdoor construction is permitted at temperatures as low as -10°C.


Product Application:

1. Used for secondary grouting of equipment foundations.

2. For anchoring foot bolts and embedding rebars.

3. Used for reinforcement and repair of concrete structures.

Technical Specifications:

Pre-construction preparations

1. Mechanical Mixing: Concrete mixer or mortar mixer.

2. Manual Stirring: Several mixing tanks and shovels.

3. Several buckets;

4. Several weighing scales

5. Chute

6. High-position funnels, grouting pipes, and pipe fittings

7. Grouting Propulsion Unit

8. Templates (steel molds, wood molds)

9. Straw bags, rock wool blankets, etc.

10. Cotton yarn, tape

Grouting construction

Step 1: Basic Processing

The base surface should be roughened. Clean the base surface and ensure it is free of debris such as gravel, slurry, floating dust, oil stains, and release agents. The base surface should be adequately moistened 24 hours before grouting, and any standing water should be removed 1 hour before grouting.

Step 2: Inspection

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

2. The horizontal distance around the template and base should be kept around 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 Preparation

Generally, water is mixed at a standard of 13-14% for general reinforced type, and 9-10% for stone aggregate reinforced type.

2. Recommend using mechanical stirring, which typically takes 1-2 minutes (electric drills are strictly prohibited for stirring). When using manual stirring, first mix for 2 minutes with 2/3 of the water, 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 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 adjacent sides until it overflows from the opposite side, to facilitate air release during the grouting process. Grouting from all four sides simultaneously is not allowed.

② After grouting begins, it must be conducted continuously without interruption, and the grouting time should be minimized as much as possible.

③ 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 outward along the equipment edge within 3-6 hours after grouting (as shown in the image below) to prevent cracks from forming at the free end. If edge cutting is not possible, the surface of the grouting layer should be smoothed with a trowel within 3-6 hours after grouting.

⑤ When the thickness of the grouting layer exceeds 150mm, use reinforced gravel-type high-strength, non-shrinkage 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. Immediately cover with a wet straw mat or rock wool blanket within 30 minutes after grouting, and maintain moisture.

2. During winter construction, the maintenance measures should also comply with the relevant provisions of the current "Code for Construction and Acceptance of Reinforced Concrete Engineering" (GB50204).

3. After the grouting material reaches the demolding time, the equipment installation can be carried out. Please refer to the "Demolding and Curing Time and Environmental Temperature Relationship Chart" for the specific time.

4. After the equipment foundation grouting is completed, if there is a need to remove any part, gently scrape it off with a spatula or shovel tool before the grouting layer hardens, which is typically within 3-6 hours after grouting.