Quad®

Leverage lower quality sands to produce great concrete

Lower Quality Sands: Impact Concrete Performance and Placement

Scarcity of good quality sands and the impact of transport on concrete embodied carbon, is providing significant challenges to the industry. However, the quality of sands has a direct impact on concrete performance, placeability and finishability.

The possibility of using lower quality sands, which are locally sourced, without compromising the concrete quality significantly contributes to reducing supply lead time, costs and improving the concrete CO2 footprint.

Quad® is a unique solution for extending the use of complex aggregates while maintaining superior concrete quality:

  • Harsh manufactured sands (specific shapes)
  • Sands with lower gradation (lack or excess of fines)
  • Swelling clay contaminated aggregates

Quad® Brochure

Pumpability

Workability Retention

Superior Water Reduction

Reduced CO2 Footprint

Products

Quad® 815

Quad® 815 is a chemical admixture specifically designed and formulated to meet the needs of the concrete producer. It is designed to selectively react with clay contaminants in both coarse and fine aggregates.  This highly engineered product can eliminate the negative effect of clays in concrete through irreversible chemical reaction. Quad® 815 does not contain TEA or added chlorides. Quad® 815 complies with AS 1478 as a Type SN.

Quad® 816

Quad® 816 is a chemical admixture specifically designed and formulated to meet the needs of the concrete producer. It is designed to selectively react with clay contaminants in both coarse and fine aggregates. This highly engineered product can eliminate the negative effect of clays in concrete through irreversible chemical reaction. Quad® 816 does not contain TEA or added chlorides. Quad® 816 complies with AS 1478 as a Type SN.

Benefits of Using Quad®

Pumpability

improved concrete cohesiveness and rheology for enhanced pumpability without bleeding issues

Workability Retention

improved workability retention and facilitate concrete placement and finishability

Superior Water Reduction

controlled water demand despite the presence of swelling clays

Reduced CO2 Footprint

reduced costs by sourcing from local suppliers, streamlining the procurement process and lowering the carbon footprint

Enter the Circular Economy and its Virtuous Circle

The implementation of a circular economy approach with the use of local aggregates or aggregates from deconstruction sites is a major challenge to accelerate sustainable construction.

The Quad® range and dedicated services optimise production costs, while improving the quality and performance of concrete using complex aggregates.

Quad® Solutions

Quad® is a unique solution that combines water reducing admixtures with a set of services to evaluate the quality of sands and adjust the concrete mix design, to achieve equal or better performance cost-effectively.

Full Product Offering & Custom-Made Solutions

Full product offering based on proprietary polycarboxylate technologies that are highly efficient for mitigating clay-related water demand issues and lack of the concrete cohesiveness and flowability due to specific gradation/shape aggregates.

Chryso®Clear Test

Characterize the type and quantity of clay embedded in your sands with Chryso®Clear Test.

Unique characterization method for swelling clay which is a real alternative to the methylene blue test with higher accuracy and reproducibility, and very easy-to-use testing in the lab.

Mix Design Proportioning

We support our customers with mix design proportioning considering your sand gradation, shape and other materials.