Coarse aggregate = 1087.75 kg/m 3. Over the past 15 years we received numerous phone calls and emails from people who are looking for a good way to repair exposed aggregate concrete slabs. The concrete solidifies and hardens through a chemical process called hydration. Without the code we are unable to supply. OFF-WHITE CEMENT: Specially manufactured Off-White Portland cement. Its created through a mixture of various coloured stones and cement that give it its unique textured finish. For trial -1 of concrete in lab & to check its properties. Variations can occur in shade as a result of print quality. Thus, the exposed aggregate concrete finish was born and no sooner we at Metro Mix Concrete started to work with Melbourne’s architects and designers to diversify and exploit the decorative effects possible with this exciting new finish. Concrete slabs with exposed aggregate finishs are becoming increasingly popular for swimming pool decks, patio floors, driveways and sidewalks. Exposed Aggregates are achieved by washing away the top layer of concrete to leave the surface layer of aggregate exposed. Read more about 21 Labasa; Purtell mix. Exposed Aggregate (also known as Decorative Concrete) is one of Midway’s most popular finishes for concrete. It is long lasting, non-slip and has an … She graduated from New York University in 2003 with a Bachelor of Fine Arts in creative writing. Mixing aggregate concrete is simple, but exposing aggregate once the concrete begins to set calls for special care. Colorful gravel gives a unique look to pavement when mixed into concrete. Call 9584 2863 Exposed aggregate concrete is great for paths and driveways. W/c = 0.5. Q.: Is there a standard mix to use for exposed aggregate flatwork if you do not want to seed the top of the concrete with a special aggregate? Exposed Aggregate has been a popular decorative concrete feature for many homes and spaces since the 1950’s. With your vision and our creativity, ideas become reality. CONCRETE MIX DESIGN. A.: No, there is not a standard mix; but you should design the mix or choose the mix with the desired end result in mind. An Exposed Aggregate application follows a pouring and treatment process on the surface. This durable non-slip decorative finish is ideal for trafficable areas, including driveways, pool surrounds and walkways. Each region around New Zealand has a different exposed range. Pea gravel (3/8 … But a closer look reveals the major role and influence aggregate plays in the properties of both fresh and hardened concrete. On the day you're having the concrete poured, have a strait board ready to level it. Again, many different deco-aggs may be used, chosen for their shape, their texture, their colour or a combination of these factors. Exposed aggregate finishes by definition, are when the aggregates (the stones and/or sands) near the surface of the substrate are revealed; these components would otherwise be concealed by a thin layer of cement paste and remain unseen. All of this presupposes that the mix will be designed for adequate strength (preferably 4000 psi if for outdoor use in a freezing climate), will have a slump of 2 to 4 inches and, if to be exposed to weather, will be air entrained. It will satisfy durability & economy. The exposed aggregate concrete mix is 21 Labasa it has a gray base and blend of mainly 7mm bluestone and has some nice brown baige white concrete aggregates. Changes in gradation, maximum size, unit weight, and moisture content can all alter the character and performance of your concrete mix. Colour variations can be caused by many factors which are beyond our control, including the amount … You will probably want to achieve affiliate links in this story the responsibility of concrete! 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