WebMay 16, 2024 · Sack rub (sack finish) A finish for formed concrete surfaces, designed to produce even texture and fill all pits and air holes. After dampening the surface, and before it dries, a mixture of dry cement and sand is rubbed over it with a wad of burlap or a sponge-rubber float to remove surplus mortar and fill the voids. WebJan 1, 2024 · The rub finish then turns to grinding the fins and offsets and adding grout and sacking. This rub to grind/sack creates a changed condition that is rarely recognized and not paid for. Thus, the concrete contractor has to absorb the increased cost. The 2024 version of ACI 301 will be out this year with proposed changes to rubbed finishes.
Finishing New Concrete Surfaces - AWCI
WebFinish F3- shall include all measures specified for finish F2 and in addition, filling air holes with mortar and treatment of the entire surface with sack rubbed finish. It shall also … WebJan 10, 2011 · The new ACI 301-10 Specifications for Structural Concrete lays out the requirements for Surface Finish-1.0, -2.0 and -3.0 and Unspecified As-Cast Finishes. … lothar nutto
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WebAug 23, 2012 · finish, rubbed—a finish obtained by using an abrasive to remove surface irregularities from concrete. (See also sack rub .) finish, rustic or washed —a type of terrazzo topping in which the matrix is recessed by washing before setting so as to expose the chips without destroying the bond between chip and matrix; a retarder is sometimes ... WebJul 22, 2009 · Location: Friday Harbor, San Juan Island, Washington. Posts: 13027. #3. 07-20-2009, 11:15 PM. Re: "Sacking" a concrete wall. Small area, the wall is 5' long and 3' … WebAug 23, 2012 · sack rub—a finish for formed concrete surfaces, designed to produce even texture and fill pits and air holes; after dampening the surface, mortar is rubbed over the … hornbach carport alu