![]() The reason in areas subject to freezing weather, water will accumulate from the indentations and freeze, potentially causing spalling.īut if you like the look and use of good-quality concrete protected by a waterproofing sealer, a salt finish ought to be durable enough to endure any climate.Īlso, read: What Is Construction Contract | Types of Engineering Contracts | Percentage-Rate Contract Creative Ways of Use a Salt Finish. Salt finishes are more commonplace in the warmer southern and western regions of the country. While salt is relatively quick and easy to master, there are newer methods which may speed up the procedure for doing away with the salt altogether. Having good access around the work area also is important, so broadcasting is limited to 15 or 20 lineal feet.Īlso, read: IS 516:1959 Most Important Point (Method of Tests For Strength of Concrete) How to Create a Salt Finish.Īs its name implies, a salt finish is traditionally achieved with the same coarse rock salt sold to be used in water softeners or as a deicer in winter.Ĭoncrete finishers broadcast the salt particles over moist concrete and then press the grains to the surface using a roller or float.Īfter the concrete sets (Final Setting Time of Concrete), they power wash away the salt, revealing a speckled pattern of shallow indentations left by the dislodged salt particles. Rock salt rated as”coarse” or”extra coarse” would be the most popular sizes to use.īecause it’s broadcasted by hand in a similar way to throwing dry-shake colour hardeners, skill is required by the worker to achieve an even distribution. Some finishers also gauge timing by lightly pressing the surface to see if concrete paste or colour sticks for their finger–proceeding when there’s no residue in their finger. ![]() If you push your finger with moderate pressure to the surface, it must penetrate approximately 1/4 inch at most. The stiffness of the concrete needs to be the same as it would be for stamping textures or patterns. ![]() Make sure to finish just after the water sheen has disappeared from the surface.įor the best results, workers should broadcast salt once the concrete is just beginning its initial setting phase. During the bull-floating operation, care ought to be taken to remove the lines created by the float.įinishers often finish a slab either with Fresnos or using hand trowels to get a smooth finish to record the print of the salt better. There’s little difference about finishing and placing concrete in preparation for a salt finish.
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