RETARDER
DarCole Product’s water-reducing retarders reduce water-cement ratios while ensuring normal or extended set times, specifically designed to address the challenges posed by hot weather climates. These specialized solutions are meticulously engineered to optimize the performance of concrete mixtures, enabling construction professionals to achieve reduced water-cement ratios without compromising the desired setting characteristics. By incorporating DarCole water-reducing retarders into concrete production, construction projects can effectively mitigate the risks associated with high temperatures, such as accelerated setting, premature hardening, and decreased workability. This innovative approach not only improves the overall quality and durability of the concrete but also enhances construction efficiency and allows for more precise control over the setting process.
DHS Retarder
Description
DarCole Hydration Stabilizer is a liquid admixture solution designed to control the hydration process of Portland cement. DHS coats the hydrating cement particles resulting in the suspension of the hydration chemical reaction. By suspending the hydration, DHS maintains the plasticity, slump, temperature, and delays the set time of concrete. Normal hydration continues once the DarCole Hydration Stabilizer is chemically consumed.
Advantage
- Concrete will produce normal setting characteristics and improved ultimate compressive strength over conventional concrete
- Can extend the work life while placing concrete
- Can be used for extended haul times without slump loss
- Can help mitigate false setting concrete
- Extends truck discharge window
- Limits peak temperature rise
DNL 785R Retarder
Description
DarNlok 785 Retarder is a water reducing concrete admixture originally developed specifically for on-site continuous type mixers. DNL 785R has various uses for all types of mixers because of its rapid integrating characteristics and the ability to be used directly in the water supply system or in on board admix tank systems. DNL 785R decreases water-cement ratios while increasing the quality of the cement; improving slump loss, splashing, shrinkage, segregation, and stabilizing volume.
Advantage
- Increases bonding, flexural and compressive strengths
- Improves flowability, pumpability, placement, workability, and finishing
- Lowers water/cement ratios
- Can help accelerate finish time
- Enhances air entrainment up to 2%
- Stabilizes volume
- Beneficial when slight concrete retardation is necessary
- Enhances color in colored concrete
DWR 385R Retarder
Description
DarCole Water Reducer 385 Retarder is a mid range water reducing, set retarding admixture for concrete. DWR 385R increases the cohesive properties of Portland cement, which enables the cement particles to hydrate more thoroughly in hardened concrete. This chemical reaction utilizing DWR 385R decreases water-cement ratios while increasing the quality of the cement; improving strength, finishing, durability, and appearance.
Advantage
- Increases bonding, flexural and compressive strengths
- Improves flowability, pumpability, placement, workability, and finishing
- Lowers water/cement ratios
- Reduces surface bleeding, shrinkage, and cracking
- Increases durability against freeze/thaw cycles
- Provides control over set time based on dosage rates
