Mortar additive powders displayed with a CHANGYU INDUSTRIAL bag, a digital scale, laboratory glassware and mortar samples.

Dry-Mix Mortar Additives

Additives for dry-mix mortar, selected to suit your application, raw materials and performance targets. We support product selection and basic formulation discussions.

  • Main Products: HPMC, RDP, PCE powder, polypropylene fibers and PVA
  • Applications: Plastering mortar, tile adhesive, wall putty and related mortar products
  • Support: Grade selection and trial-based formulation adjustment

Key Features

Water Retention & Workability

Selected HPMC grades help retain water and adjust mortar consistency for smoother application.

Adhesion & Flexibility

Suitable RDP grades help improve bonding and flexibility in tile adhesives, repair mortars and related products.

Water Reduction & Flow

PCE powder helps reduce water demand and improve flow in self-leveling, grouting and repair mortar formulations.

Early Crack Control

Polypropylene fibers help reduce plastic shrinkage cracking through dispersed reinforcement within the mortar.

Main Additives & Functions

HPMC — Hydroxypropyl Methylcellulose

A cellulose ether used for water retention and consistency control. Suitable grades support workability in plastering mortars, tile adhesives, wall putty and gypsum-based products.

HPMC packaging mockup with a white powder sample and a blue-and-white CHANGYU INDUSTRIAL bag.

RDP — Redispersible Polymer Powder

A polymer powder that redisperses in water and forms a film as the mortar dries. Suitable grades support adhesion and flexibility in tile adhesives, insulation mortars, repair mortars and wall putty.

RDP packaging mockup with a white polymer powder sample and a blue-and-white CHANGYU INDUSTRIAL bag.

PCE — Polycarboxylate Superplasticizer Powder

A powder additive used to reduce water demand and improve flow. Typical applications include self-leveling mortars, grouts and repair mortars. Dosage is selected through compatibility and performance trials.

PCE superplasticizer powder mockup with a pale cream powder sample and a labeled CHANGYU INDUSTRIAL bag.

PP Fibers — Polypropylene Fibers

Short fibers that disperse within the mortar to help control early plastic shrinkage cracking. Fiber length and dosage are selected according to the mortar type and mixing requirements.

Polypropylene fiber packaging mockup showing short white fibers beside a labeled CHANGYU INDUSTRIAL bag.

PVA — Polyvinyl Alcohol

Selected PVA grades provide film-forming and binding support in wall putty and related dry-mix products. Grade selection and dosage should be matched to the formulation and verified through trials.

PVA packaging mockup with a white powder sample and a labeled CHANGYU INDUSTRIAL bag.

Technical Specifications

ProductSelected Reference SpecificationsPackaging
HPMCWhite powder; viscosity grade selected for the application25 kg/bag
RDPVAE-based redispersible polymer powder; grade selected for the application25 kg/bag
PCE Powder — DFM315Bulk density: 580 ± 50 kg/m³; moisture: ≤5.0%; pH: 8.5 ± 1.0 at 23°C in a 20% aqueous solution25 kg/bag
PP FibersDiameter: 31 μm; lengths: 3, 6, 9, 12, 15 or 19 mm; tensile strength: ≥500 MPaConfirm with quotation
PVA
Grade and technical specifications to be confirmed for the applicationConfirm with quotation

Applications

Our additive range supports plastering mortar, wall putty, tile adhesive, masonry mortar, insulation mortar and selected self-leveling or repair products. Additive type, grade and dosage are matched to the binder system, raw materials and required performance.

Interior wall coated with gray plastering mortar.

Plastering Mortar

Worker applying white wall putty with a wide finishing trowel.

Wall Putty

Worker spreading tile adhesive with a notched trowel on a floor beside ceramic tiles.

Tile Adhesive

Basic Formulation Support

We discuss additive selection and basic formulation adjustments based on your target product, local raw materials and performance requirements.

  • Define the Application: Identify the mortar type, application method and performance targets.
  • Review Raw Materials: Consider the cement or gypsum, sand, fillers and existing additives.
  • Select Suitable Grades: Match additive functions and grades to the formulation requirements.
  • Review Trial Results: Adjust the formulation using feedback on workability, flow, adhesion and other relevant properties.

Final formulations and dosages should be validated through testing with local raw materials.

Need Help Selecting Mortar Additives?

Tell us your mortar type, raw materials, current performance issues and target requirements. If available, share your existing formulation and trial results so we can discuss suitable additive grades and basic adjustments.