How Skyway Slag Cement Improves Concrete Properties
Used in a Variety of Applications
Skyway slag cement is used in a wide variety of residential, commercial, industrial and public construction applications, which include cast-in place concrete, precast/prestressed concrete, structures, foundations, bridges, roads, pipe, block, mass concrete, masonry mortars, grouts, waste solidification, and soil stabilization. Skyway slag cement is particularly suitable for making high-strength, high-durability concrete with improved resistance to chemical/environmental attack, low permeability, light color for architectural uses, and low heat for mass-concrete applications. It can achieve these benefits while reducing the cost of concrete, when slag cement is optimally proportioned for concrete performance.
A More Durable Concrete
Skyway Slag Cement Improves Concrete Properties
Specifically, Skyway Slag Cement improves concrete properties in the following ways:
- Improved workability and finishability
- More consistent plastic and hardened properties
- Lighter color
- Higher slump at same w/cm ratio
- Significantly higher strength beyond seven days
- Higher compressive (1,000 – 2,000 psi) and flexural strengths at 28, 56 and 90 days
- Lower permeability (<1,000 coulombs)
- Improved resistance to sulfate attack and alkali-silica reactivity (ASR)
- Lower heat of hydration for mass concrete structures
- Cost savings of $4 to $7/cu.yd. using performance mix designs
- Plastic and drying shrinkage similar to ordinary portland cement mixtures
- Highly consistent chemical & physical properties
- No residual carbon maintains consistent entrained for content
This table shows the performance comparison between a 100% portland cement mix and mixes with 20% and 40% slag cement replacing portland cement.
Source: Commercial certified lab test results with Skyway slag cement and Type I portland cement.
Alkali Silica Reactivity ASR Testing
Sulfate Testing [ASTM C1012]
Range of Cement Replacement
This table shows a range of cement replacement percentages depending on the application.
Source: Slag Cement Association.