Field & lab Testing

Laboratory Testing:

• Tensile Strength

• Compressive Strength à (Eagle 8 is Cercrete)

• Flexural Strength

• Impact

• Coefficient Of Linear Expansion

• Contraction And Expansion In Deterioration

 

• Flexural Strength Of The Composite Steel Plate

• Tensile Strength Of Adherence To Pavement and Concrete

Tensile Strength Test Results

Test Conditions:
– Cercrete TM-Q B (Water 22%) – Room temperature
– Cercrete TM-P G (Water 18%) – Room temperature

Results:
Maximum tensile strength reaches approximately 8 N/mm² at 25 days
Both Q and P variants show consistent strength development over time

Compressive Strength Test Results (1/3)

Cercrete TM-P Compressive Strength And Water Content:
– Low temperature 5℃ testing performed
– Water content range: 17-21%
– Optimal performance at 18-19% water content
– Maximum strength: ~50 N/mm²

Age vs Strength Development:
– Cercrete TM-Q (water: 22%): Rapid initial hardening
– Cercrete TM-P (water: 18%): Strong performance across age range
– 28-day strength exceeds 60 N/mm²

Compressive Strength Test Results (2/3)

Cercrete TM-C Compressive Strength And Water Content:
– Water content range: 20-40%
– Ice water vs normal water comparison
– Maximum strength: ~70 N/mm²
– Optimal water content: 30-35%
– Ice water shows enhanced performance

Compressive Strength Test Results (3/3)

Compressive Strength and Age Comparison:

Flexural Strength Test Results

Flexural Strength And Mixing Temperature:
– Test specimens: PG (8×16mm and □40mm), QB (8×16mm and □40mm)
– Temperature range: 0-25℃
– Maximum strength: ~20 N/mm²
– Performance remains stable across temperature range
– Larger specimens show enhanced flexural properties

Impact Test Results

Impact Value and Temperature:
– Cercrete TM-QB (water 22%)
– Cercrete TM-PG (water 18%)
– Temperature range: -20℃ to +60℃
– Maximum impact value: ~4.5 J/cm²
– Excellent performance maintained even at low temperatures
– Superior cold weather workability confirmed

Coefficient of Linear Expansion

Test Piece: Cercrete TM-Q (water 22%) B

Temperature Ranges:
– -75℃ to +60℃ (non heat treatment)
– -75℃ to +360℃ (heat treatment)

Results:
– Non heat treatment: 1.45×10⁻⁵ (K⁻¹)
– Heat treatment: 0.93×10⁻⁵ (K⁻¹)

Heat treatment reduces thermal expansion coefficient, improving dimensional stability at high temperatures.

Tensile Strength of Adherence to Steel

Cercrete TM-Q Adherence And Thickness:

 

Breaking occurs primarily in bonding part (B) rather than adherence to steel (A), indicating excellent steel bonding.

Flexural Strength of Composite Steel Plate

Composite Performance Data:

Tensile Strength of Adherence to Concrete

Comparative Adherence Performance:

Cercrete TM-Q shows superior adherence – failure occurs in test piece rather than bond interface, indicating bond strength exceeds material strength.

Structure Application Examination – Steel Handrail

Application Testing:

• Steel handrail repair and reinforcement

• Evaluation of adherence to existing steel structures

• Assessment of durability under traffic conditions

• Weather resistance evaluation

Results: Excellent performance in real-world steel structure applications with strong bonding and weather resistance.

Structure Application Examination – Steel Box Girder

Test Results:

• Enforcement: It can blow 3~5mm/One (Stack coating is possible)

• Adhesion With Rust Side: Very Strong

• The Durability: Depends on thickness

Cercrete TM demonstrates excellent adhesion even to rusted steel surfaces, making it ideal for rehabilitation of existing structures.

Structure Application Examination – Road Potholes

Pavement Repair Material Inspection:

⇒ Adherence to Slab or Basement

Test Results:

• Rapid hardening: Ready for use in 15 minutes

• Adhesion strength: Strong

• Handling: Easy

Conclusion: Cercrete TM is the most suitable material for road pothole repair

Pavement Adaptability Examination

Cercrete TM Casting Performance:
– Pavement casting compatibility testing
– No delamination observed
– Successful pavement removal testing
– Evaluation: Good!

Cercrete TM demonstrates excellent compatibility with existing pavement systems and maintains integrity during removal procedures.

Repair Examples – Pavement Repair

Pavement Repair Application:

• Before: Damaged pavement with potholes and surface deterioration

• After: Smooth, restored surface with excellent durability

Casting Method Benefits:

• Rapid application and curing

• Minimal traffic disruption

• Long-lasting repair solution

• Superior adhesion to existing pavement

Repair Examples – RC Slab Repair

Reinforced Concrete Slab Restoration:

• Before: Cracked and deteriorated concrete slab

• After: Fully restored structural integrity

Casting Method Advantages:

• Excellent penetration into cracks

• No shrinkage during curing

• Superior bond strength with existing concrete

• Rapid strength development

• Long-term durability

Repair Examples – ASR Damage Restoration

Alkali-Silica Reaction (ASR) Damage Repair:

• Before: Concrete affected by ASR expansion and cracking

• After: Complete structural restoration with prevented further deterioration

Cercrete TM Benefits for ASR Repair:

• Neutral pH prevents further alkali reactions

• Excellent crack penetration and sealing

• Chemical resistance to ASR conditions

• Long-term stability and durability

Conclusions

• Cercrete TM – Has Best Qualities for Bridge Life Lengthening.

• Cercrete TM – Rapid Hardening Capability Shortens the Construction Time.

• Cercrete TM – Has Very Strong Adhesion Strength for Both Steel and Concrete.

• Cercrete TM – Non-shrinkage Character When Curing Provides High Quality Repair.

• Cercrete TM – Can Be Used Under Very Cold Climate.

Cercrete TM Technology represents a significant advancement in infrastructure maintenance materials, offering superior performance characteristics for extending the service life of critical transportation infrastructure.