Dingyou (Diutan) Gum

Dingyou (Diutan) Gum is a high-molecular-weight water-soluble microbial polysaccharide produced via microbial fermentation, widely used as high-performance viscosity modifying admixture for cement-based mortar and concrete. When mixed into fresh cementitious slurry, Dingyou (Diutan) Gum chains entangle and build a continuous elastic hydration network in the liquid phase. It delivers typical shear-thinning (pseudoplastic) rheology: instantly reduced viscosity under stirring, pumping or troweling shear force for smooth flow and leveling. It also locks free mixing water to deliver sustained water retention without delaying cement hydration or impairing final mechanical strength.

🌱 Core Advantages in Mortar & Concrete

• Anti-segregation & anti-bleeding stabilization:
  The yield stress formed by entangled polymer chains uniformly suspends sand, stone, pigment and mineral fillers, eliminating aggregate settlement, water bleeding and layered separation in highly flowable self-compacting mixes, even during long-distance pumping and transportation.
• Optimize pseudoplastic rheology:
  High static viscosity prevents vertical sagging of wall mortar and sprayed concrete; low shear viscosity ensures excellent fluidity, self-leveling, gap-passing capacity through dense steel reinforcement, and easy manual troweling.
• Efficient water retention & extended open time:
  Traps free water inside the slurry system, slows surface water evaporation, avoids premature drying under high-temperature dry construction environments, and prolongs operable time without negative impact on setting speed.
• Outstanding temperature & salt/calcium resistance:
  Its double-helix molecular conformation resists viscosity loss under temperature fluctuation and high calcium ion concentration in cement slurry, far superior to xanthan gum, welan gum and starch-based stabilizers; stable performance in hot construction and marine anti-chloride concrete systems.
• Excellent compatibility with superplasticizers:
  Side chain steric hindrance inhibits polymer adsorption on cement; compatible with polycarboxylate, naphthalene and melamine superplasticizers, no flocculation or loss of flowability in high-fluidity formulas.
• Strong anti-interference against raw material fluctuation:
  Mitigates negative effects from variable sand moisture content, discontinuous aggregate grading and unstable raw material quality, improving formulation robustness and on-site construction stability.
• Non-toxic, eco-friendly biopolymer:
  Fermentation-derived natural polysaccharide, no harmful volatile substances, no corrosion to steel reinforcement, compliant with environmental standards for civil construction materials.

🧱 Key Applications

• Self-Compacting Concrete (SCC):

High-fluidity self-compacting structural concrete, precast components, bridge deck concrete; solves segregation and bleeding issues while maintaining high filling ability through dense rebar cages.

• Self-Leveling Underlayments & Flowable Floor Screeds:

Cement-based self-leveling floor mortar, gypsum flowing screed; realizes rapid automatic leveling, no sagging, uniform thickness and smooth finished floor surface.

• Post-Tension Grout & Injection Mortar:

Duct grout for prestressed bridges, anchor bolt injection mortar, structural crack repair grout; prevents aggregate settlement and water separation, ensures full void filling and compact curing.

• Underwater & Anti-Washout Concrete:

Underwater foundation cast-in-place concrete, river/sea pipeline protective concrete, underwater repair mortar; avoids cement paste loss under running water and guarantees structural integrity.

• Premixed Dry Mortar Series:

Wall putty, tile adhesive, exterior thermal insulation base coat mortar; improves anti-sagging and water retention for vertical construction.

Waterproof mortar, colored decorative concrete; stabilizes pigment suspension and uniform color rendering.

Shotcrete for tunnel and mine support; reduces rebound rate and enhances slurry cohesion.

• Special Functional Cementitious Materials:

Pervious concrete, high-temperature industrial refractory castables, gypsum joint filler, liquid cement admixture thickener; stabilizes porous and high-temperature fluid cement systems.

Available Grade

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