Page 155 - RoadCem Manual - PCT BV
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The mix specification for 1 m3 of concrete for the ConcreCem Fine Aggregate(sand) Concrete finish is given in the Table 5.8.
Table 5.8 Mix design.
   Material
     MIX DESIGN
 Sand, 0-5 mm, kg ConcreCem, kg
Cement CEMI 42.5N, kg Water, L
1500 4.5 350 to 450 270
        The amount of water needs to be adjusted depending on the actual moisture content of the sand aggregate and the weather conditions.
The thickness of the the ConcreCem Fine Aggregate(sand) layer should not be less than 4 cm and can be as high as 8 to 10 cm.
5.9.3 ConcreCem Fine Aggregate (sand) Concrete +Quartz Sand Finish
Concrete is placed and than sprayed with fine quartz sand which is blended into the surface of concrete to give it more rougness for added skid resistance.
Same Mix design is used as prescribed in table 5.8, and 5 to 7 kg of 0-2 mm quartz sand is spread on top of the fresh concrete (Figure 5.43) and is then blended in using the rotary “Helicopter” polishing equipment to finish the treatment (Figure 5.43).
Figure 5.43 ConcreCem Fine Aggregate (sand) Concrete +Quartz Sand Finish.
Similar to the above is the Smmoth finish. The top 1cm of the construction is completed with a mixture of cement, ConcreCem and a granular material with a very fine grain size. Using the Smooth finisher machine to finish off the top neatly. An example is shown in figure 5.44.
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