Dalton Silica Admix

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
• In manufacture of precast sewage pipes
• Used under harsh concreting conditions
• In mortars and plastering
• Used in decorative and art structures

Specification

• Silica Content: Min 90%
• Alumina Content: Max 5%
• Sodium Content : Max 1.5%
• Particle Size: 5-10 m
• Loss on Ignition  : Max 5%
• BET Surface Area  : Min 50 m2/g