Water-Swellable Polymers

Water-swellable polymers is a white odorless fine powder synthesized via cross-linking polymerization. When mixed into fresh cementitious systems, it rapidly absorbs free mixing water and swells into elastic hydrogel particles, acting as internal water reservoirs and rheology regulators throughout the curing period of mortar and concrete. Water-swellable polymers works as thickener, dispersant and anti-segregation agent instead of superabsorbent, often compounded in mortar additives to adjust slurry viscosity and homogeneity

🌱 Core Advantages in Mortar & Concrete

• Internal Curing to Eliminate Shrinkage

Hydrogel particles gradually release stored water to replenish moisture consumed by cement hydration, especially critical for low water-cement ratio high-performance concrete. Sustained water supply ensures complete hydration of cement clinker and greatly cuts self-desiccation shrinkage and early cracking risk.

• Self-Sealing & Crack Repair

When microcracks generate and water penetrates hardened matrix, dry polymer particles along crack surfaces re-swell instantly to plug capillary channels, blocking water, chloride and corrosive ion penetration. Released water triggers secondary hydration to form C-S-H gel and repair tiny cracks automatically, improving long-term impermeability.

• Rheology & Anti-Segregation

Increases slurry cohesion, reduces water bleeding, aggregate settlement and vertical sagging during construction. Work as high-efficiency thickener and dispersant; chelates free calcium ions to break cement flocs, enhance flowability and pumpability for self-compacting concrete and grout.

• Freeze-Thaw Resistance Enhancement

Voids left after hydrogel water release serve as stress buffer channels to relieve frost expansion pressure, lowering surface spalling and mass loss under repeated freeze-thaw cycles.

• Ultra-high water absorption & slow controlled water release

Superior water locking capacity vs pregelatinized starch; absorbed water does not leak under external pressure, realizing long-term internal curing effect under high-temperature dry construction environments.

• Excellent pseudoplastic construction performance

High static viscosity to avoid sagging; low viscosity under shear force for easy stirring, pumping, spraying and plastering, extending construction open time.

• Wide compatibility with common cement additives

Stable coexistence with cellulose ethers, polymer powder, polycarboxylate superplasticizers, retarders and inorganic fillers; no flocculation, delamination or strength loss in alkaline cement pore solution.

• Non-toxic, chlorine-free & steel-rebar friendly

No chloride ion corrosion to steel reinforcement; biodegradable, no volatile hazardous substances, compliant with environmental building material standards.

🧱 Key Applications

• High-performance & Ultra-high-strength Concrete

Low water-cement ratio self-compacting concrete, high-strength precast components, high-performance bridge deck concrete

Mass concrete (dam, foundation slab) to relieves temperature shrinkage and autogenous shrinkage cracking.

• Repair & Waterproof Mortars

Crack repair mortar, leak-stopping plugging mortar for basement, tunnel and underground structures

Exterior wall waterproof mortar, bathroom/kitchen waterproof screed mortar

• Premixed Dry Mortar Series

Tile adhesive, interior/exterior wall putty (skim coat)

Gypsum plasters, exterior thermal insulation base coat mortar

Grouting mortar for post-tensioning ducts, anchor bolt fixing mortar

• Underground & Hydraulic Engineering Concrete

Tunnel lining concrete, sewage pipeline, manhole and culvert precast concrete.

Water tank, underground reservoir, marine anti-corrosion concrete.

• Special Construction Materials

3D printed cementitious materials (shape retention, anti-cracking)

Underwater non-segregating concrete, foundation cold joint sealing materials

Anti-leakage shotcrete for mine and tunnel support

Available Grade

Please contact us for more details