Prism Length Change Testing Equipment

Prism Molds meet ASTM C151, C157, C227, C490, C1260, and AASHTO R 70 and T 107M. Molds with base plate, removable partitions, and end plates provide the required length of 10in (254mm) between the innermost ends of Gauge Studs cast in ends of bars.

• Length Comparator with a dial or digital indicator offers precise measurement of length changes. Can test specimens up to 4x4x10in. Meets ASTM C151, C157, C227, C490, C1260 and AASHTO R 70 and T 107M.
• Cement Autoclave is ASME certified. Used in curing of mortar bar specimens for determining the expansion of hydraulic cements in compliance with ASTM C151 and AASHTO T 107M.
• Mortar Bar Container meets ASTM C 227, which is stainless steel with a tight-fitting cover to seal in water vapor. Vertically supports up to 36 mortar bars in a container with a lower end above the water surface.
• Single Prism Mold, 1x1x10in is a corrosion-resistant steel mold used in length change testing of mortar, concrete, or Portland cement paste samples.
• Single Prism Mold, 3x3x10in is made of corrosion-resistant steel and used in length change testing of different concrete specimens.
• 2-Gang Prism Molds, 1x1x10in available in corrosion-resistant steel or stainless steel models. Used for casting mortar, concrete, or Portland cement paste specimens.
• 2-Gang Prism Mold, 2x2x10in for length change testing of Portland cement paste, concrete, or mortar specimens. Can also be used with a length comparator for measuring the change in cast prisms due to alkali-silica reactivity and other causes.
• Gauge Studs made of 316 stainless steel are threaded into prism molds and cast into specimens for precise measurements in the Length Comparator.

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• Cement Testing Resource Guide: Methods & Equipment