![]() The skid resistance of a driveway, sidewalk or road is correlated to the macrotexture of the surface. Smoothness of the concrete driveway surface is the primary cause that makes it slippery. ![]() What Causes Slippery Concrete? Macrotexture Speed, slopes and curves add to the hazard. Rain, snow and ice can make a smooth driveway even more treacherous. The slipperiness of trowel finish concrete driveway increases when it is sealed with a topical sealer. A smooth trowel finish is therefore slippery. On the flip side, a smooth concrete driveway offers little traction to car tires. The end result is an extremely smooth concrete surface.Ī smooth concrete surface looks pretty neat and is easy to clean & maintain. Trowelling flattens out the ridges and rough spots. ![]() The concrete cream, which is cement and fine sand, rises to the top during the trowelling process. Trowel Finish concrete driveway is slippery. Exposed Aggregate Finish not only makes the driveway look beautiful, it also makes it skid resistant. Stamping gives the concrete driveway stunning looks but does not increase skid resistance. The degree of roughness and therefore the level of skid resistance depends on the type of broom used and the pressure applied. Broom Finish does not improve the looks but makes the slab rough and skid resistant. Trowelling brings the concrete cream to the top so that the slab gets a smooth surface.Īlternative finishing techniques are broom finishing, stamping, exposed aggregate, etc. The most common finishing process is trowelling. The concrete is now ready to be finished. The wet concrete is then Floated, using a darby or a bull float, to level the ridges and embed the protruding aggregates.Įdging and Joint Grooving can be done after the bleed water dissipates. A straight board is used to Screed and level the concrete. Once the concrete is poured within the driveway forms it is spread around with a shovel or rake. ![]()
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