Two Layer Monolithic Construction
A concrete floor consists of (a) a layer of structural concrete 100mm-150mm thick and (b) a topping, approximately 50mm thick with 15mm top layer in which Conite has been incorporated.
When laying a concrete floor it is very desirable to apply the topping to the structural concrete base while it is still wet which ensure good bond and risk of layer separation is eliminated.
Three Layer Granolithic Construction
When it may not be possible owing to building requirement to complete the floor in one operation, sub floor should be levelled off approximately 50mm - 70mm below the finishing level. On initial level setting, surface should be brushed with a stiff broom to remove all laitance and leave a rough surface to provide a good key to the topping.
The surface of sub floor should be thoroughly soaked with water for 12 hours to prevent the absorption of the mixing water into a dry base. The topping is laid in two layers (i) A screened bed of granolithic layer and (ii) Conite layer. Prior to laying the layer, any surplus water should be mopped up and cement grout brushed well into the surfaces keeping just ahead of the application of the granolithic layer which to be laid within 15mm - 20mm of finishing level. This should be as dry as possible and thoroughly compacted by rolling or grill tamp.