Diutan gum, is a rapidly dispersible high viscosity, rapid hydrating, water soluble biopolymer produced by fermentation for use in gypsum and hydraulic cementitious systems, as a viscosity modifying agent (VMA) specifically used where super pseud plasticity characteristics are required such as cementitious materials and oil and gas drilling.
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Description:
Diutan gum was developed specifically for use with cementitious materials and the newest class of superplasticizers. It enables formulators and designers to improve the performance of hardened materials by controlling flow, segregation, sedimentation and bleed. In addition, diutan gum DG-P develops a higher degree of pseud plasticity, greater low shear rate viscosity (LSRV), and improved viscosity retention at elevated temperatures when compared to traditional polymeric rheology modifiers used in drilling, workover or completion fluids.
Diutan gum, is a viscosity modifying agent (VMA) specifically used where super pseudplasticity characteristics are required such as cementitious materials and oil and gas drilling.
Application and Advantages
Description | Diutan gum, is a fine mesh, rapid hydrating, water soluble biopolymer produced by fermentation for use in gypsum and hydraulic cementitious systems, as a Viscosity Modifying Agent (VMA). ØImparts high solution viscosity at low gum concentrations ØHas pseudoplastic rheology profile (e.g., is shear thinning) providing: llow viscosity at high shear rates ( Easy to pump & place ) lhigh viscosity at low shear rates ( Provides superb particle suspension) ØExhibits little solution viscosity change over a wide temperature range. |
Features | ØProvides excellent suspension and emulsion stability at lower viscosities. ØImproved pumping, placement and workability. ØControls Bleed. ØIs stable under high-shear. ØExhibits low viscosity while processing (e.g., pumping and spraying). ØProvides excellent water retention. ØImproves shelf life stability of high pH products. |
Benefits | ØHomogeneous placement and curing of aggregate, sand, pigment and past. lImproved surface properties and durability lUniform strength lImproves pigment efficiency and provides consistent color quality ØBleed control improves quality, and may reduce labor finishing costs. ØReduces impact of raw material variability on costs and quality. lReduces impact of moisture in sand and aggregate lReduces impact of gap graded sand and aggregate ØStabilizes highly fluid mix designs for Gypsum Systems, Self Compacting Concrete and Underwater Concrete Systems. |
Typical Application | ØGypsum floor screeds ØSelf Compacting Concrete (SCC) ØInjection & post tension grouts ØPigmented concrete & gypsum systems ØSelf Leveling Underlayments (SLU) ØUnderwater concrete (anti-washout) ØPervious concrete |
Typical Use Level | DG-P is typically used at a level of 0.01 - 0.15 wt% basis weight of water. |
Dissolution
The dissolution of the product depends on the medium and the process: it is improved by heat-treatment (time, temperature), shear-stress (propeller, exchanger, homogenizer). A complete dissolution can be obtained in cold conditions.
Packaging & Storage
Diutan gum DG-P is available in 50lb or 55lb plastic lined 4-layer paper bags and shipped via an approved common carrier.
DOT classification – Non Hazardous.
Shelf Life
Diutan gum DG-P has a shelf life of 24 months from date of manufacture when stored in a clean dry area.
