SJ-61 Prestressed Pipe Grouting Material

Product Description

1. Product Application Scope

This product meets the requirements of the "JTG/T F50-2011 (Technical Specifications for Construction of Highway Bridges and Culverts)" for high-performance grouting materials for prestressed voids.

Section II: Application Fields

1. Prestressed concrete beam pipe grouting  2. Equipment foundation, auxiliary rods, and other component grouting

3. Nuclear Power Plant Shell Grouting  4. Concrete Drainage, Crack and Hole Repair

III. Performance Specifications:

ProjectPerformance specificationsInspection and Testing Methods Standard

Water-to-Binder Ratio (%)0.26~0.28Cement standard dosage water content, setting time. Stability testing methods (GB/T1346)

Setting Time (h)Initial setting≥5 

 Final Solidification≤24 

Flowability (25℃) (s)Initial liquidity10~17JTG/T F50-2011 Appendix C3

 30-minute fluidity10~20 

 60-minute flow point10~25 

Water Permeability (%)24-hour moisture regain rate0JTG/T F50-2011 Appendix C4

 3H wire moisture content0JTG/T F50-2011 Appendix C5

Pressure Drop Rate (%)0.22 MPa (when the bore vertical height is 1.8 m)≤2.0JTG/T F50-2011 Appendix C6

 0.36 Mpa (when the hole channel vertical height is not less than 1.8 meters)  

Free Water Content (%)3h0~2JTG/T F50-2011 Appendix C4

 24h0~3 

FulfillmentQualifiedJTG/T F50-2011 Appendix C7

Compressive Strength (Mpa): 3d3d20Cement Aggregates Strength Testing Method (ISO Method) (GB/T 1761)

 7d≥40 

 28d≥50 

Flexural Strength (Mpa) 3d3d≥5

 7d≥6 

 28d≥10 

Corrosion effect on rebarNo rust(Concrete admixture) (GB8076)