Main Products: CGM High-Strength Non-Shrink Grouting Series, CGM-340, CGM-380, Epoxy Grouting, Epoxy Patching Mortar, CGM-320 Support Grouting, Fast-Filling Gravity Mortar, Seat Mortar, CGM High-Strength Emergency Repair Material; High-Strength Polymer Mortar, High-Performance Self-Leveling Mortar (Colorful), High-Strength Abrasive Material, Steel Adhesive, Reinforcement Adhesive, Encased Steel Grouting Adhesive, Joint Sealing Adhesive, Carbon Adhesive, Dry-Hanging Adhesive; Interface Treatment Agent, Prestressed Pipe Grouting Agent, Abrasion-Resistant Floor Hardener, etc., as well as Product Masterbatch
Long-term supplier of high-strength non-shrink grout, new bridge specification prestressed pipe grouting agent, 320 support grouting material, high-strength polymer mortar, epoxy repair mortar, ultra-fine cement grout, gravity mortar, surface treatment agents, etc. Our product quality fully meets industry standards and is highly trusted by customers. Our products are popular in all provinces, municipalities, and autonomous regions across the country. Welcome both new and old customers to come and select and inspect!
SJ-62Pre-stressed pipe grouting material
Product Description
I. Product Application Scope
This product fully meets the requirements of "JTG/T F50-2011 (Technical Specification for Construction of Highway Bridges and Culverts)" for high-performance grouting materials for prestressed ducts.
Section II: Application Fields
1. Prestressed concrete beam pipe grouting 2. Equipment foundation and auxiliary rod grouting
3. Nuclear Power Plant Shell Grouting 4. Concrete Drainage, Crack and Hole Repair
III. Performance Specifications:
Project | Performance specifications | Standard Testing Methods | |
Water-to-binder ratio (%) | 0.26~0.28 | Standard schedule water consumption for cement, setting time. Stability test methods (GB/T1346) | |
Setting Time (h) | Initial setting | ≥5 | |
Final Solidification | ≤24 | ||
Flow Rate (25°C) (s) | Initial liquidity | 10~17 | JTG/T F50-2011 Appendix C3 |
30-minute flowability | 10~20 | ||
60-minute flowability | 10~25 | ||
Permeability Rate (%) | 24-hour free drainage rate | 0 | JTG/T F50-2011 Appendix C4 |
3-hour wire moisture content | 0 | JTG/T F50-2011 Appendix C5 | |
Pressure Drop Rate (%) | 0.22 MPa (when the vertical height of the channel is 1.8 m) | ≤2.0 | JTG/T F50-2011 Appendix C6 |
0.36 Mpa (when the hole channel vertical height is not less than 1.8m) | |||
Free Moisture Rate (%) | 3h | 0~2 | JTG/T F50-2011 Appendix C4 |
24h | 0~3 | ||
Fulfillment | Qualified | JTG/T F50-2011 Appendix C7 | |
Compressive Strength (Mpa): 3d | 3d | 20 | Cement Aggregate Strength Testing Method (ISO Method) (GB/T 1761) |
7d | ≥40 | ||
28d | ≥50 | ||
Flexural Strength (Mpa) 3d | 3d | ≥5 | |
7d | ≥6 | ||
28d | ≥10 | ||
Corrosive effect on rebars | Rust-free | (Concrete admixture) (GB8076) | |
IV. Construction Method:
One. Prior to use, it is necessary to conduct a trial mix with cement to determine the dosage ratio. - The mixing ratio is:Mixed inside10.0%Adjustable internal admixture amountWater-to-adhesive ratio0.26～0.28%。
2. Stirring: Use a high-speed mechanical stirrer with a speed of not less than 1000 rpm/min. The stirring sequence is as follows: first add water to the corresponding mark, turn on the stirrer, evenly add the slurry agent, then add the cement evenly, and after all the powdered materials are added, stir for 3-5 minutes before pressing the slurry.
Section 3: After mixing, the slurry should be pressed as soon as possible, using the usual pressing method.
Four. Clean, use water to clean all construction tools and equipment.
V. Protective Measures: Wear protective gloves and goggles during construction.
Matching Equipment: High-speed Pulp Machine, featuring fully automatic pulp pressing equipment, computer-controlled!
