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HM-259 3x3x10in (76x76x254mm) Single Prism Mold forms Portland cement paste, mortar or concrete samples used in length change testing. It is also for evaluating hydraulic hydrated lime for structural purposes. HM-259 is for specimen cross sections of 3x3in (76x76mm). The mold has a base plate, removable partitions and end plates constructed of corrosion-resistant steel to provide required length of 10in (254mm) between ends of HM-268 Gage Studs cast in ends of bars. Outside specimen length is 11.25in (286mm).
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