Same as #65 but includes sand, making it quite desirable for tile, slabs and handbuilding.  

WC610, #66

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  • Characteristics Cone: 6 Wet Color: Light Gray Fire Color Oxidation: Off-White Reduction: N/A Texture: Slightly Coarse Consistency: Standard Avg. Shrinkage 2±% 12.5% Avg. Water Absorption 1±% 1.5% COE x 10-6: 4.75