Sidley PCE1036L Low Heat Hydration Superplasticizer for Large Structures

Its specialized polymer structure moderates the rate of cement hydration, slowing the internal heating rate, flattening the temperature peak, and delaying the time to reach that peak. This allows heat to dissipate more effectively, reducing the core-to-surface temperature differential that causes cracking.

No, it is a comprehensive solution. While it provides necessary retardation for thermal control, it is first and foremost a high-range water reducer. It delivers the low w/c ratio needed for high strength and low permeability, which are also critical for mass concrete durability, while simultaneously managing heat generation.

Yes, it is highly synergistic. PCE 1036L is specifically designed to work exceptionally well with supplementary cementitious materials (SCMs) like GGBS and PFA. It enhances their effectiveness, allowing you to achieve even lower heat profiles and more sustainable mix designs without sacrificing workability or early-age performance.

Laboratory testing is essential. We recommend: Trial Batches to test workability, slump retention, and set time. Adiabatic Calorimetry to measure the heat evolution of your specific mix with PCE 1036L under adiabatic conditions, accurately predicting temperature rise in the field. Thermal Modeling to use the calorimetry data to model temperature gradients in your actual structure.

The typical dosage is 0.3% - 2.5% by cementitious weight (Liquid) or 0.32 - 2.67 kg/100kg of cement. For optimal results, add PCE 1036L to the concrete mix after approximately 80% of the mixing water has been added. Avoid adding the admixture directly to dry cement or aggregates.