Lottman Breaking Heads

Lottman Breaking Heads are used with conventional Marshall Stability Load Frames to determine Indirect Tensile (IDT) or Lottman values of asphalt mixes. The 4in, 6in, and 150mm Breaking Heads can be used to determine tensile strength ratio (TSR) by calculating stress levels between conditioned and unconditioned specimens.

MS-35 model is available for 4in (102mm) specimens.

MS-36 model is available for 6in (152mm) specimens.

MS-38 model is available for 150mm specimens. The 150mm Lottman Breaking Head can be used to perform the Indirect Tensile Cracking Test (IDEAL-CT) in accordance with ASTM D8225.

Each fixture consists of a base with upright guide rods and a top with matching guide sleeves. The upper and lower stainless steel loading strips have concave contact surfaces.

Features:

• Stainless steel loading strips
• Available for 4in, 6in, or 150mm specimens

Included Items

• Lottman Breaking Head

Accessories

• Lower Supporting Cradle can replace the 6in or 150mm Lottman Breaking Head lower loading strip for use in determining resistance to rutting.