SikaCem®-900 Geo W

12 months in original, unopened packaging

Store in a dry, covered area, protected from the elements

For optimum performance it is recommended to store the material between 40°F - 95°F (5°C - 35°C)

Protect from moisture. If damp, discard material.

No cracking or severe deterioration with light surface scaling

144.2 lb/ft³ (2.31 kg/L)

40 °F - 95 °F  (4 °C - 35 °C) 

7.8 - 8.3 pints per 65 lb bag (3.7 - 4.0 L per bag)

30 - 32 US gal per 2000 lb supersack (113.5 - 121.5 L per supersack)

0.120 - 0.128 pints of water per lb of product

40 °F - 95 °F  (4 °C - 35 °C) 

Time begins when product is applied to substrate.

0.51 ft³ (0.014 m³) per 65 lb bag

0.58 yrd³ (0.450 m³) per 2000 lb Supersack

Yield figures do not include allowance for surface profile and porosity, or material waste

• Surfaces must be clean and sound. Remove all deteriorated concrete, dirt, dust, oil, grease, contaminants and other bond-inhibiting materials from the area to be repaired
• To ensure optimum repair results, the effectiveness of decontamination and substrate preparation can be assessed by a Pull-Off test (i.e Tensile Adhesion test per ASTM C1583)
• Saw cutting the perimeter edges of the repair area is recommended, preferably cut at a dovetail angle
• Remove any and all protruding material i.e brick, concrete, mortar, etc.
• Ensure that any and all leaks are stopped prior to application

• ​​​​​​Pour 7.8 pints (3.7 liters) of clean water per 65 lb bag into a suitably sized mixing container
• Add product to the container while continuously mixing with a low-speed rotary drill (400 - 600 rpm), and paddle or a concrete mixer
• Add up to an additional maximum 0.5 pint (0.23 liter) of water, if needed, for the desired consistency
• Do not overwater. Excess water may cause segregation
• Mix to a uniform consistency, maximum 5 minutes. Thorough mixing and proper proportioning are necessary

Apply in accordance with the ACI 506 “Guide to Shotcrete” publication.

Performance of in-place shotcrete relies heavily upon application techniques. The shotcrete material, equipment and key personnel should be pre-qualified prior to project start-up to ensure optimum quality of in-place shotcrete.

OPTIMUM PERFORMANCE

• Product should not be applied when ambient, substrate, and material termperatures are below 40 °F (5 °C) or above 95 °F (35 °C).
• For adverse temperatures, follow ACI recommendations for Cold/Hot Weather Concreting.

FINISH

• If needed, a troweling finish can be done following initial set of the surface in an upward direction. Do not over trowel the surface. For standard sewage repair, a smooth finish is not recommended, as it will decrease the water discreted from the product during final set and curing.

Contact your Sika STM Technical Representative for more information.