Conplast SP431R

Main uses

Conplast SP431R is a chloride free, superplasticising admixture based on selected sulphonated naphthalene polymers supported with other polymers. It is supplied as a brown solution which instantly disperses in water. Conplast SP431R disperses the fine particles in the concrete mix enabling the water content of the concrete to perform more effectively.

• Particularly suitable for high performance concrete containing cements replacement products such as PFA, GGBFS and micro-silica and low water/cement ratio.
• To provide excellent acceleration of strength gain at early ages and major increases in strength at all ages by significantly reducing water demand in a concrete mix.
• To significantly improve the workability of site mixed and pre-cast concrete without increasing water demand.
• To provide improved durability by increasing ultimate strengths and reducing concrete permeability.
• Suitable for use in East and Central African conditions.

Advantages

• Makes possible major reductions in water/cement ratio which allow the production of high performance concrete.
• Increased workability levels are maintained longer than with ordinary sulphonated melamine admixtures.
• Use in production of flowing concrete permits easier construction with quicker placing and compaction and reduced labor costs without increasing water content.
• Major increases in strength at early ages without increased cement contents.
• Improved cohesion and particle dispersion minimizes segregation and bleeding and improves pumpability.
• Chloride free, safe for use in pre-stressed and reinforced concrete.
• High Slump retention