Kelco-Crete® diutan gums are unique water-soluble biopolymers produced by fermentation and supplied in a powdered form. This range of construction additive stabilizers offers formulators multiple benefits with a bonus of being a bio-renewable raw material to effectively contribute towards sustainability goals.
Kelco-Crete DG products have a unique helical structure, molecular weight, and anionic character which gives multiple performance qualities across a full range of products and water-to-cement ratios, with and without superplasticizers.
KELCO-CRETE® diutan gum
- Hydrates in the mix water of cementitious & gypsum-based systems
- Modifies the rheology of the water & hence the mix
- Works closely with the superplasticiser used in the mix
- Imparts a highly shear-thinning, pseudoplastic rheology to the mix
- Its rheology stabilises & creates a homogeneous mix with minimal impact on flow and workability
- VERY EFFECTIVE -used at very low dosages to stabilise & improve the quality of the mix
- Extremely useful in the design of fluid & highly workable mixes
- Useful to formulate materials with very low VOC emission (e.g. according to EMICODE®EC 1 plus)
| Product | Particle Size* | Typical Dosage (wt% dry mix) | Description | Sample |
|---|---|---|---|---|
| KELCO-CRETE DG | 180 𝜇m (80 mesh) | 0.001 - 0.050% | Disperses most easily in potable water. Dispersable in glycols, oils or solutions for manual addition. | 🛒 |
| KELCO-CRETE DG-F | 75 µm (200 mesh) | 0.001 - 0.050% | Recommended for dry mixes & suspensions to deliver in no/low water systems | 🛒 |
| KELCO-CRETE DG-S | 75 µm (200 mesh) | 0.01 - 0.50% | Blend with limestone. Recommended for dry mixes & where dosing of larger quantities aid production | 🛒 |
Suspension of Components in Low Viscosity Systems
Kelco-Crete DG Minimizes sedimentation and separation of components at low viscosities
- Reduced settling of sand, aggregate & pigment
- Uniform hardened properties
- Improved pigment efficiency and color quality
Water Bleed Control
Kelco-Crete DG gives improved finish quality
- Enhances surface appearance
- Robust processing latitude
- Improved hydration – less water loss
- Better mix homogeneity
Higher quality colored concrete
- Easier to finish with fewer mistakes & imperfections
- Reduced efflorescence, pits & holes
- Potential to reduced pigment loading & still get desired color/shade
Improved Stability
Kelco-Crete DG gives a better ablity to cope with raw material variations and allow wider processing latitude
- Insurance for raw material quality
- Ability to use local, less expensive & marginal sand & aggregate
- Potential to reduce inventory & silo storage of different aggregates
Kelco-Crete copes with variations in materials for wider processing latitude:
- Moisture in sand & aggregate
- Manufactured sand and gap graded aggregate
- Compatible with all water reducers/plasticisers
Better Flow
Kelco-Crete is perfect for Pumping! Pseudoplastic behavior shows low viscosity under shear & high viscosity in place.
- Improved pumping, placement & workability
- Facilitates liquid flow of sand & aggregate for Self Leveling and Pervious Systems.
- Reduced labor placing & finishing
Benefits:
- Optimized filling of formwork & molds with congested rebar
- Reduced Placement, Finishing & Labor Costs – No Vibration
- Easier to Pump, Place, & Work
- Finished Concrete Assurance
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