Construction

Welcome to RawChemicalMart’s Construction Chemicals catalog. We specialize in high-performance additives for the dry-mix mortar industry, ensuring superior workability and bond strength.

Our core product line is engineered for modern construction applications:

  • Cellulose Ethers (HPMC/HEMC): Essential for water retention, open time, and sag resistance in cement-based mortars.
  • Redispersible Polymer Powder (RDP/VAE): Improves flexibility, impact resistance, and adhesion strength on difficult substrates.

Explore our additives below tailored for tile adhesives, skim coats, and self-leveling compounds, or contact us for a formulation guide.

Construction Additives Selection Guide

In modern construction, the performance of dry-mix mortars relies heavily on chemical additives. RawChemicalMart provides a complete system of retention agents and binders that meet international quality standards (GB/T, ASTM).

Core Additives for Dry-Mix Mortars

1. Hydroxypropyl Methyl Cellulose (HPMC)

HPMC is the "heart" of any dry-mix formulation. It controls water retention, preventing the mortar from drying too quickly and cracking.

  • Viscosity Options: We supply a range from 400 mPa.s (for self-leveling) to 200,000 mPa.s (for tile adhesives and putty).
  • Key Benefits: Excellent thickening effect, prolonged open time, and slip resistance for vertical tiling.

2. Redispersible Polymer Powder (RDP)

RDP is a free-flowing, white powder obtained by spray drying an aqueous vinyl acetate-ethylene (VAE) copolymer dispersion.

  • Function: When mixed with water, it redisperses into a polymer emulsion, forming a film that reinforces the mortar matrix.
  • Key Benefits: dramatically increases tensile adhesion strength, flexibility (transverse deformation), and abrasion resistance.

Application Reference Chart

Different applications require specific viscosity ranges and dosage levels.

ApplicationRecommended HPMCRole of RDP
Tile Adhesive (C1/C2)High Viscosity (100k - 200k)Critical for meeting tensile strength standards (e.g., >1.0 MPa).
Wall Putty / Skim CoatMedium Viscosity (100k)Improves polishability and weather resistance.
EIFS / ETICS MortarHigh Viscosity (150k - 200k)Provides necessary flexibility to absorb thermal expansion.
Self-Leveling CompoundLow Viscosity (400)Ensures flowability and surface smoothness.

Why Source Additives from RCM?

Formulating mortar is a precise science. We support your production with:

  • Quality Consistency: Strict control over ash content and gel temperature to ensure stable performance in different climates.
  • One-Stop Sourcing: Combine HPMC, RDP, and PVA in a single shipment to optimize logistics costs.
  • Technical Support: We can suggest starting formulations for various grades of tile adhesives and wall putties.

Need a sample to test in your lab? Contact our sales team for 500g free samples of our HPMC or RDP.