Product Overview

Auramix 300 Plus is an enhanced formulation in the Fosroc Auramix PCE superplasticiser range that specifically addresses the challenge of workability retention in ready mix concrete delivered over long distances in the hot Indian climate. Standard PCE superplasticisers (including Auramix 300) provide high workability at the point of mixing, but slump loss during transport can be significant when transit times exceed 45 to 60 minutes, especially in summer temperatures above 35 degrees C when cement hydration is accelerated and evaporative loss of mix water is increased. The Plus formulation of Auramix 300 Plus uses a modified PCE comb polymer structure with a higher molecular weight and a different side-chain architecture compared to Auramix 300 — these molecular characteristics result in a slower initial rate of adsorption to the cement particles, releasing plasticising activity over a longer period after mixing and maintaining workability at a higher level for longer. The practical benefit for the ready mix producer is that the concrete arrives at the site with adequate workability for pumping and placing even after transit times of 60 to 90 minutes, without the need to add water at the site (which would increase the water-cement ratio and reduce strength). Auramix 300 Plus is formulated for use in grades M25 to M60 concrete and is compatible with all Portland cements, PPC, PSC, and supplementary cementitious materials. Space Arc Engineering distributes Auramix 300 Plus for ready mix concrete plants and high-performance concrete projects across Delhi NCR, Ghaziabad, and Northern India.

Applications

• Ready mix concrete for long-haul delivery in hot Indian summer conditions
• High-workability pump concrete for high-rise building construction
• Concrete for projects with limited site pumping windows requiring extended working time
• Grade M30 to M55 structural concrete for infrastructure and bridges
• Hot weather concrete where standard admixtures lose slump rapidly
• Self-consolidating concrete formulations requiring extended flow retention

Key Advantages

• Extended workability retention — slump maintained for 60–90 minutes versus 30–45 minutes for standard PCE
• Modified PCE comb polymer for controlled release of plasticising activity
• High water reduction (20–25%) for low water-cement ratio durable concrete
• Compatible with PPC, PSC, fly ash, GGBS, and silica fume
• Non-chloride — safe for all reinforced concrete
• Part of the enhanced Fosroc Auramix PCE superplasticiser family