SpECbuild SC

Pre-bagged cementitious mortar for smooth finishes.

SpECbuild SC is a pre-bagged, one-part cementitious mortar specifically formulated for providing a fair-faced finish to rough concrete and masonry surfaces. This product ensures ease of application while achieving a smooth and uniform appearance, making it suitable for various construction projects.
With excellent adhesion properties and resistance to shrinkage cracking, SpECbuild SC proves to be a reliable choice for surface restoration and enhancement.

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Technical Details

SpECbuild SC is designed to improve the smoothness and regularity of concrete and masonry surfaces in various scenarios:
  • Reinstating concrete surface defects such as blowholes.
  • To provide a uniform surface over repaired surfaces.
  • Correcting errors with respect to line and level.
SpECbuild SC offers several advantages that make it an ideal choice for construction and contracting companies looking to achieve high-quality finishes. Its unique formulation ensures ease of use and effective performance in various applications. The key advantages include:
  • Pre-bagged to ensure constant high quality.
  • Easy to use; requires only the addition of clean water.
  • No need for a primer or a curing agent in normal conditions.
  • Excellent adhesion to concrete.
  • Resistant to shrinkage cracking.
  • Free from chloride additives.
SpECbuild SC is designed with specific technical properties that ensure optimal performance in various construction applications:
Property Value @ 20°C Value @ 30°C
Working Life (ASTM D2471) 45 mins 30 mins
Setting Time (ASTM C403) 45 mins – 1.5 hrs 30 mins – 1 hr
Fresh Wet Density (ASTM D1475) 2000 kg/m³ 2000 kg/m³
Compressive Strength (ASTM C 109) 28 days: 32 N/mm² 28 days: 32 N/mm²
Application of SpECbuild SC
Preparation:
Before applying SpECbuild SC, it is crucial to prepare the substrate adequately. Ensure that all laitance, grease, and oil are removed through grit blasting. The resulting surface should be dust-free. Additionally, the prepared substrate must be thoroughly soaked with clean water prior to application. When the application starts, ensure the substrate is saturated without any standing water on the surface.

Mixing:
SpECbuild SC is a one-part cementitious mortar requiring 6.5 to 7.0 litres of clean water for each 25kg bag. For mixing, use a forced action mixer or an appropriate-sized metal or plastic drum equipped with a slow-speed drill and a spiral paddle. Always add the water to the mixing vessel before introducing SpECbuild SC into the mix. Continue mixing for 3 to 5 minutes until achieving a uniform, lump-free consistency.

Application Process:
SpECbuild SC can be applied in one layer as a thin section render up to 3mm thick. It is also suitable for filling blowholes up to 10mm deep. Avoid overworking the material during application and allow it to partially set before final finishing. This finishing can be enhanced by lightly flicking water onto the surface before troweling.

Curing:
While SpECbuild SC is resistant to shrinkage cracking, it is advisable to protect the material from extreme conditions like hot winds or freezing temperatures. To reduce rapid drying, SpECcure AC or SpECcure WE can be sprayed on the surface. In colder conditions, ensure the material is protected from freezing.
SpECbuild SC is available in convenient packaging for ease of use:
A single 25kg bag of SpECbuild SC will provide approximately 12.5 litres (0.0125m³) of mixed material.

For detailed warranty information regarding SpECbuild SC, please contact our team at SMCC. We are here to assist you with any inquiries and provide the necessary support.

You can reach us using any of the contact methods available on our website.

Product FAQ

To mix SpECbuild SC correctly, start by adding 6.5 to 7.0 litres of clean water into a forced action mixer or an appropriate-sized drum. Then, gradually add the entire contents of a 25kg bag of SpECbuild SC while mixing. Continue mixing for 3 to 5 minutes until you achieve a uniform, lump-free consistency.
SpECbuild SC can be applied to rough and uneven concrete or masonry surfaces, including reinstating surface defects, providing a uniform finish over repairs, and correcting line and level errors.
The ideal application thickness for SpECbuild SC is up to 3mm.
SpECbuild SC takes approximately 45 minutes to 1.5 hours to set at 20°C, and 30 minutes to 1 hour at 30°C.
The compressive strength of SpECbuild SC is 32 N/mm² at 28 days.
Temperature affects the setting and working time of SpECbuild SC. At higher temperatures, the working life decreases and the setting time shortens, resulting in a faster application process. Conversely, at lower temperatures, the setting time increases, requiring additional care to prevent freezing. It’s crucial to maintain application within the recommended temperature range of 5°C to 35°C for optimal performance.

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SpECbuild SC