King MS-S6 SCC Concrete 30kg

Surface Preparation: All repair surfaces must be free from dust, oil, grease or any other foreign substances that may interfere with the bond of the material. Remove all delaminated or unsound concrete providing a roughened surface and a minimum of 25 mm (1 inch) clearance behind any corroded reinforcing steel. The perimeter of the repair area should be saw-cut a minimum of 20 mm (¾ inch). Clean the area to be repaired with potable water, leaving the concrete saturated but free of standing water (SSD).

Mixing: Place 75% of required potable water into mixer and slowly introduce entire bag of MS-S6 SCC. Add balance of required water slowly while mixer is running, not exceeding maximum recommended volume of water. Maximum recommended volume of water is 3.15 L (0.83 US gallon) per 30 KG (66 lb) bag. Continue mixing for a minimum of 3 minutes and stop only when material has obtained a consistent homogeneous mix. Restrict mixing time to 2 minutes when using a drill/paddle style mixer.

Placing: Mix and substrate temperatures should be maintained between 5 °C and 30 °C (40 °F and 86 °F). Do not place MS-S6 SCC when ambient temperature is below 5 °C (40 °F). Refer to ACI 306, “Guide to Cold Weather Concreting”. In warm weather, ice water may be used to cool mix temperature and avoid short working time. When ambient temperature is above 30 °C (86 °F), refer to ACI 305, “Guide to Hot Weather Concreting”.

Fill the formwork with water in order to fully saturate the substrate and formwork. Repair any leaks in the formwork, as the formwork should be watertight. Drain water before introducing the MS-S6 SCC. Gravity feed or pump MS-S6 SCC into forms and allow mix to fully encapsulate any existing rebar. Rodding and vibrating of mix is not required. Forms should not be removed until mix has attained a minimum compressive strength of 25 MPa (3625 psi). Refer to ACI 347, “Guide to Formwork for Concrete”.

Placing (for overhead or vertical pumping applications): Follow pump manufacturers recommendations for pumping. Formwork should contain drainage outlets for pre wetting substrate. Fill the formwork with water in order to fully saturate the substrate and formwork. Repair any leaks in the formwork, as the formwork should be watertight. Drain water before introducing the MS-S6 SCC. For soffit repairs, vent holes should be included for air venting. Entry points for MS-S6 SCC should not be spaced more than 600 mm (24 inches) apart. An acceptable form release agent should be used for easy removal of forms. Pump mix into forms ensuring that no voids are left in any locations. Forms should not be removed until mix has attained a minimum compressive strength of 25 MPa (3625 psi). Refer to ACI 347, “Guide to Formwork for Concrete”.

CURING