MASTERTOP 100 | Dry shake hardener for industrial floors | Dry shake toppings

• Shrinkage and cold joints must be formed in such a way as to control any change in the shape or movement of the concrete without cracking;

• In order to control the movements in these joints so that they occur only in the horizontal plane, in the right direction, the reinforcement must protrude from the slab, and enter into the adjacent slab;

• The branch entering the adjacent slab must be in a plastic case to ensure the mobility of the armature branch;

• Only after putting on the cover should the adjacent slab be poured;

• This will prevent vertical and longitudinal movement of cold joints during the movement of the plates.

• In a monolithic bonded slab, it is required to provide adhesion between the old and new concrete, before laying a layer of new concrete, using MasterBrace ADH 1420 epoxy adhesive or MasterCast 125 polymer cement concrete with adhesion improver.

• In floating screeds, it is mandatory to use a concrete separating the layers, a sheet of polyethylene membrane that prevents adhesion between the layers of old and new concrete.

• A concrete slab must be poured in a structure that clearly corresponds to the project;

• Before pouring concrete, the required number of bags of MasterTop 100 hardener should be prepared, in accordance with the recommended consumption rates;

• The thickness of the slab/screed for applying MasterTop 100 must be at least 70mm;

•  The water-cement ratio should be at least 0.45 and the concrete class should be at least C25;

• During the pouring process, a vibrator should be used in the formwork to compact the concrete structure;

• Before the release of water begins, it should be smoothed out with a trowel and a wooden rule;

• The released water should be removed from the surface with a long wooden tool;

• The required number of bags of MasterTop 100 hardener should be prepared in advance, in accordance with the recommended consumption rates;

• Application should be made in accordance with the recommendations below;

• Before applying the powder of the material, it is necessary to remove with a spatula a triangular section of concrete along the edges of the slab at the joints measuring approximately 50 * 50 mm, and fill the cavity with a mixture of MasterTop 100 and a very small amount of water;

• This will ensure the strength of the edge of the slab at the seams under high loads;

• The hardener should not be applied in a chaotic manner to different parts of the slab, this can cause delamination of the coating;

• The distribution of the hardener should be started when the concrete has gained such strength, when the foot in the shoe of a person standing on the surface falls only 5-15mm into the concrete;

• The hardener should not be applied in places, but only as evenly as possible distributing it over the surface and leveled by the rule;

• Usually, the topping is spread over the surface, using dedicated dosing carts.

Wear resistant topping floors

• If the hardener is applied in places, it should be distributed over the surface, removing excess;

• In the first application, about 2/3 of the required amount of powder should be added;

• The powder must absorb moisture from the concrete slab from below, while changing color;

• Immediately after the color change, the hardeners carry out the first grouting with a concrete finishing machine with a disc;

• Grouting should begin near walls, columns, openings in these places, moisture loss occurs most quickly);

• It is necessary to rub the topping until a uniform surface consistency is obtained;

• In hard-to-reach places, grout with a hand tool;

Industrial floors for the military industry

Consumption Mastertop 100

Precautionary measures