SpECbuild EM

SpECbuild EM is designed to provide repairs in various challenging conditions. Typical uses include:
– Industrial floors
– Warehouses
– Acid tanks
– Sewage lining
– Sea walls
– Transition strips against mechanical joint systems

SpECbuild EM offers numerous benefits that make it an ideal choice for repairing and resurfacing concrete surfaces. Its high-performance features enhance durability and effectiveness in various applications.
– High mechanical strength.
– Early strength gain to minimize disruption.
– Resistant to aggressive chemicals.
– Highly impervious.
– Slip resistant.
– Waterproof.
– Non-toxic surface (after full cure).

SpECbuild EM is engineered with superior technical specifications to ensure optimal performance in demanding repair environments:

Compressive Strength (BS 6319-2)	63 N/mm² @ 7 days
Flexural Strength (BS 6319-3)	35 N/mm² @ 7 days
Tensile Strength (ASTM C 307)	16 N/mm² @ 7 days
Water Absorption (ASTM C413-01)	0.31% @ 7 days
Pot Life @ 25°C	40 – 50 mins
Initial Hardness	1 day
Full Cure	7 days
Application Thickness	5mm minimum, 50mm maximum (horizontal) 10mm maximum (vertical, no formwork)
Application Temperature Range	Minimum 5°C, Maximum 35°C
Shelf Life	12 months (when stored in a cool environment, in original unopened containers)
Flash Point	SpECbuild EM >150°C

Application of SpECbuild EM
Preparation:
It is essential that adequate surface preparation is carried out prior to the application of SpECbuild EM. Grit blasting is recommended to ensure the removal of all laitance, grease, and oil. The resulting surface should be dry and dust-free. The repair boundary should be cut back to a depth of at least 10mm to avoid feather edging. All corroded steel should be completely exposed, including the rear of the bar to enable thorough cleaning. The steel should be cleaned to bright metal immediately prior to the application of SpECcoat Zn25 zinc-rich protective coating. Apply one coat of SpECcoat Zn25 to the cleaned steel ensuring full coverage, and allow to dry before commencing the next step.
Priming:
The prepared surface should be primed with SpECtop Primer F1. The mixed primer should then be applied to the prepared substrate by a stiff brush at a coverage rate of 10-15m²/litre. If the primer appears to be absorbed into the surface easily, it will be necessary to apply a second coat once the initial coat is tack-free. Allow the primer to become tacky prior to the application of SpECbuild EM.
Mixing:
SpECbuild EM is supplied as a three-component kit consisting of a base component, a curing agent, and a bag of selected, graded aggregate. The two resin components should be stirred separately before mixing the two together to achieve a homogeneous consistency. The entire quantity of resin is placed into an appropriately sized forced action mixer, and the aggregate is slowly added to the resin with the mixer running. Continue to mix for a further 3 to 5 minutes until all components are thoroughly blended. The mixing of part packs should not be undertaken.
Application:
Apply the mixed product firmly onto the tacky primer using a trowel to build the required thickness. Use a wooden float to ensure complete compaction and a secure bond. Where access to the substrate is difficult, such as around steel reinforcement, a gloved hand may be used for placing. The application is always completed by closing the surface of the mortar with a steel trowel before it sets. Subsequent layers should be applied within 10-12 hours. If this time is exceeded, the surface should be reprimed prior to succeeding applications.
Overcoating:
Where SpECbuild EM is used in a hygienic situation, it may be overcoated with a suitable epoxy resin coating such as SpECtop ARE125.

SpECbuild EM is supplied in the following packaging:
– 12 litre (0.012m³) packs. Each pack covers approximately 2.4m² at 5mm thick.
– SpECtop Primer F1 is supplied in 1, 5, and 15 litre packs. Coverage is approximately 10-15 m²/litre.