Associated Testing Laboratories
Rebound Hammer
Rebound Hammer
Introduction
The Rebound Hammer Test, also known as the Schmidt Hammer Test, is a widely used Non-Destructive Testing (NDT) method to evaluate the surface hardness and estimated compressive strength of concrete.
At ASSOCIATED TESTING LABORATORIES, we perform rebound hammer testing using calibrated equipment and standard procedures, ensuring accurate assessment of concrete quality without damaging the structure.
What is the Rebound Hammer Test?
The rebound hammer test measures the rebound value of a spring-controlled plunger when it strikes a concrete surface.
This rebound number correlates with the surface hardness, which helps estimate the compressive strength of concrete.
It is a quick, simple, and reliable method used for on-site concrete quality evaluation.
Objectives of Rebound Hammer Test
To determine the uniformity of concrete.
To estimate the in-place compressive strength of concrete.
To detect surface deterioration, cracks, or weak zones.
To compare quality across different areas of a structure.
To conduct quality control during or after construction.
Standards Followed
Our testing complies with:
IS 13311 (Part 2) – Method of Non-Destructive Testing of Concrete
ASTM C805 – Standard Test Method for Rebound Number of Hardened Concrete
How the Test Works
During the test:
A rebound hammer is pressed firmly against the concrete surface.
The spring-loaded plunger impacts the surface.
The hammer rebounds and displays a rebound number.
This value is correlated to the compressive strength using standard charts.
Factors Affecting Rebound Results
We carefully consider:
Surface moisture
Carbonation of concrete
Type and finishing of concrete surface
Age and strength of concrete
Angle of hammer application
This ensures accurate and dependable results for every test.
Applications
The rebound hammer test is used for:
Buildings, bridges, and industrial structures
Concrete pavements and slabs
Quality control during construction
Old or deteriorated structures
Pre-construction and post-construction evaluation
Benefits of the Rebound Hammer Test
Completely non-destructive
Quick and cost-effective
Ideal for widespread structural assessment
Helps identify weak concrete zones
Provides immediate on-site results
Our Rebound Hammer Testing Services
At [Your Company Name], we offer:
On-site testing with certified technicians
Use of calibrated Schmidt hammers
Grid-based systematic testing
Combined reporting with UPV (if required)
Detailed analysis and recommendations
Why Choose Us?
✔️ Experienced & certified NDT engineers
✔️ Standardized testing as per IS & ASTM codes
✔️ Accurate, reliable, and fast reporting
✔️ State-of-the-art equipment
✔️ Affordable pricing with professional service
Our Services
Get in Touch with us
Cost Effective Great Quality
Through smart planning, skilled execution, and efficient resource management, we provide services that maintain outstanding quality while keeping costs under control. Our approach guarantees that every project delivers durability, precision, and value without compromise.
