Silica Admix is cement admixture made from natural volcanic ore. It is articulately blended in a well controlled environment to provide homogeneous and quality grain size. It protects concrete from scaling and alkali-aggregate reaction by pozzolanic reaction which is normal in exposed construction. Its high silica content and pozzolanic characteristics provide extreme concrete strength and better performance over the years. It prevent thermal cracking due to hydration caused by cement and water reaction and preventing steel bar from corrosion. It reduces the water content in a mixture and slowdown the setting rate of the concrete while retaining the flowing properties of a concrete mixture.
Properties of Silica Admix
Reduces thermal cracking caused by the heat of cement hydration
Resistant against salt water and chemicals
Resistant against high and low temperature weather
Low permeability and low compressibility
High shear and compressive strength
Large surface area
Low water consumption
Prevent fading and discoloration of coloured concrete
Uses of Silica Admix
In hydraulic structures, marine structures, coastal construction, dam construction etc
In pre-stressed and post-tensioned concrete members