Marshall Stability Breaking Head, 6in

Marshall Stability Breaking Head, 6in (152mm)

The Marshall Stability Breaking Head for 6in (152mm) hot-mix asphalt specimens is an essential tool for evaluating the stability and flow of bituminous mixtures. Engineered for precision and durability, this apparatus is designed to deliver accurate, repeatable results in both laboratory and field testing environments.

When placed within a load frame, the breaking head applies a controlled compressive load to the asphalt specimen, enabling engineers and technicians to measure deformation and flow rate with confidence. This data plays a critical role in assessing the structural integrity, quality, and performance characteristics of asphalt paving mixtures — helping ensure that roads, runways, and other paved surfaces meet required standards.

The breaking head features a rugged, heavy-duty construction built to endure the rigors of repeated high-stress testing. It consists of precision-machined upper and lower semi-circular segments that securely cradle the asphalt specimen during testing. Two vertical guide rods connect these segments and move smoothly through low-friction sleeves, ensuring that the compressive load is applied evenly and concentrically, without lateral interference or misalignment. This level of precision is vital for obtaining consistent, reliable test results across multiple samples.

Designed for seamless compatibility with Load Frames, the Marshall Breaking Head's universal design also makes it suitable for use with load frames from a wide range of other manufacturers, offering versatility across different testing setups and laboratory configurations.

Features:

• Designed for testing 6in (152mm) diameter asphalt specimens
• Precision-machined guide rods and low-friction sleeves ensure accurate, concentric loading
• Heavy-duty, durable construction for a long service life even under repeated high-stress testing
• Compatible with Load Frames and many other brands
• Upper and lower semi-circular segments are precision-machined for a secure and consistent fit
• Smooth-operating guide rod and sleeve system minimises lateral movement for reliable results
• Also available in a 4in (102mm) model for smaller specimen testing

Meets Test Methods:

• AASHTO T245
• ASTM D5581
• ASTM D6927