• Manufactured in strict conformance with ASTM and AASHTO standards.
• Bronze bearings for free sliding fit.
• Plated steel construction for easy cleaning and rust resistance.
• Precision machined loading strips.
The Lottman Breaking Head is designed for use in determining the indirect tensile strength of Marshall test specimens using either the “Modified Lottman Test Method” or “Retained Stability Test”.
Similar in design to our Marshall Breaking Head, the Lottman Breaking Head incorporates two precision machined loading strips in place of the upper and lower cylindrical segments.They are available in either 4" (101 mm) or 6" (152 mm) models, depending on the aggregate size of mix being tested.