Concrete Test Hammer (4.5J / 4.7J)

High-Energy Concrete Test Hammer (4.5J / 4.7J)

Brand Chemical Supplies provides the High-Energy Concrete Test Hammer, a specialized non-destructive testing (NDT) instrument designed for high-strength concrete applications. While standard hammers operate at 2.207J, this reinforced model provides a higher impact energy—available in 4.5J and 4.7J variants—to accurately assess the compressive strength of high-density structural concrete used in heavy civil engineering and infrastructure projects.

Technical Specifications

Key Features & Benefits

• Extended Strength Range: Unlike standard Schmidt hammers, this high-energy version is capable of testing ordinary to high-strength concrete up to 110 MPa, making it essential for bridges, dams, and high-rise foundations.

• Non-Destructive Analysis: Allows for the rapid assessment of concrete uniformity and strength without the need for core drilling, significantly reducing testing time and costs on-site.

• High Durability: Constructed with a high-grade aluminum alloy shell and precision-machined internal components to withstand the rigorous conditions of active construction environments.

• Direct Readout: Features a clear, high-contrast scale that provides the rebound value (R) immediately. This value is then converted to compressive strength (MPa) using the conversion charts provided with the unit.

• Consistent Repeatability: The high-tension spring mechanism is calibrated to ensure that every impact delivers exactly the same energy, providing reliable data for structural audits and quality control.

Primary Applications

• Heavy Infrastructure: Testing the compressive strength of bridge piers, highway overpasses, and airport runways.

• High-Rise Construction: Verifying the strength of reinforced concrete columns and load-bearing walls.

• Precast Concrete: Quality checking of large-scale precast segments and railway sleepers.

• Structural Audits: Assessing the integrity of older concrete structures during renovations or safety inspections.

Best Practices for Testing

1. Surface Preparation: Ensure the test area is smooth, clean, and dry. Use the included carborundum stone to grind away any loose material or paint.

2. Angle of Impact: The hammer should be held perpendicular to the test surface. If testing at an angle (e.g., upwards into a soffit), apply the correction factor provided in the manual.

3. Multiple Readings: Take at least 10 to 12 readings in a small grid. Discard the highest and lowest values and average the remainder for a more accurate representative strength.

4. Calibration: Regularly verify the hammer’s performance using a certified Calibration Anvil (available separately from Brand Chemical Supplies).

Contact our structural testing team at Brand Chemical Supplies today to secure your High-Energy Concrete Test Hammer and ensure your infrastructure projects meet the highest safety standards.