Clay-Tolerant Polycarboxylate Superplasticizer

Overview

Montmorillonite-type clays in aggregates adsorb large amounts of polycarboxylate molecules, leaving less effective dispersant and causing rapid slump loss. This grade introduces anti-adsorption functional groups and a sacrificial agent that occupies the clay's active sites first, keeping the PCE available for cement dispersion.

Key benefits

• Maintains flowability and retention with high-clay manufactured sand
• Lowers total dosage, reducing bleeding and setting anomalies from overdosing
• Also improves performance with manufactured sand high in stone powder
• Easy to blend with standard PCE grades

Application notes

Please send an actual sand sample (with clay content and MB value) so we can set the anti-clay ratio. Above 7% clay content we recommend washing or grading adjustment as well.

Typical uses

Manufactured-sand concrete, regions with high-clay aggregates, plants facing fluctuating sand quality.

Typical applications

• Manufactured sand concrete
• High-clay aggregates
• Variable sand quality

Technical specification

Appearance	Colourless to pale yellow liquid
Solid content	50% ± 1%
Water reduction	≥ 30%
Applicable clay content	up to 7% (trial mix required)
Slump retention (1 h)	loss ≤ 30 mm
pH value	6.0 – 8.0
Chloride content	≤ 0.01%
Density (25°C)	1.08 – 1.12 g/cm³

Specification values are typical reference figures; the COA of each batch governs. Custom solid content and formulation available on request.