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2-Gang Prism Mold, 2x2x10in (51x51x254mm) is used in length-change testing of Portland cement paste, mortar, or concrete. It is also used with the Length Comparator to measure length change in cast prisms from alkali-silica reactivity (ASR) and other such causes. The mold is equipped with a base plate, removable partitions, and end plates of corrosion-resistant steel to provide required length between ends of HM-268 Gage Studs cast in ends of bars. Dimensions from the outside end of gage studs are 11.625in (296mm) with specimen cross-sections of 1x1in (25x25mm).
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