Why Akij Cement - Akij Cement

Blast Furnace Slag Cement Reduces Permeability

Blast Furnace Slag (BFS) produces extra CSH Gel (Calcium Silicate Hydrate), which reduces the permeability of concrete. Water entrance is permeable concrete, but concrete made with SLAG cement reduces water entrance from the air. Impermeable concrete provides safety to both concrete and reinforcement within concrete.

Cement + Water = CSH + Ca(OH)2 + Heat Proportion of CSH to Ca(OH)2 is a measure of Permeability. Slag + Ca(OH)2 = Additional CSH Gel (Reduction of permeability).

Blast Furnace Slag Resists Steel Corrosion in Concrete

Carbon dioxide from the air reacts with the calcium hydroxide in concrete to form calcium carbonate. Ca(OH)2 + CO2CaC –› O3 + H2O. This reaction, called Carbonatation or Concrete Cancer, is a slow and continuous progression from the outer surface inward. Carbonatation increases the mechanical strength of concrete, but it also decreases the pH. Below pH 10, the passivated surface of the steel rebar dissolves, and the rebar starts to corrode.

Blast Furnace Slag Cement Controls the Thermal Crack in Concrete

The hydration process of cement produces calcium hydroxide and generates heat in the concrete which creates an internal and external thermal difference. This thermal difference forms cracks in the concrete known as thermal crack. Hydration characteristics of slag cement are such that the early rate of heat generation and peak temperature of the concrete are reduced and thus reduces thermal cracks in concrete.

Blast Furnace Slag is a Sulfate Resisting Ingredient

Waterborne sulfates react with calcium hydroxide Ca(OH)2 and C3A to form an expansive crystalline product called ettringite which causes tensile stresses to develop in the concrete. Slag Cement reacts to free calcium hydroxide Ca(OH)2 during Hydration and thus resist Sulfate attack. Slag does not contain C3A thus reduces the percentage in cement.

Slag Cement Achieves Extra Strength Compared to Other Cement with Time

Slag Cement achieves 15 % extra strength compared with other cement at 91 Days. Chemical Composition of slag is quite similar to that of Clinker. Due to having a strength-gaining capability of slag, it’s use in cement production as a raw material ensures extra strength compared to other cement with time.

Slag Based Grayish-White Akij Cement is Known as the Best Fit for Fair-Faced Structures

Fair-faced concrete, or decorative concrete, is mixed with aesthetic beauty in mind. It’s often smoother and lighter than traditional concrete mixes.This ensures that the natural beauty of concrete can shine through. It does not need veneers or paint. Because of it’s smooth, uniform appearance, it stands on its own. Concrete, made with Akij Slag Cement, brings out its aesthetic beauty in fair-faced concrete structures.