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.

Application Recommended HPMC Role of RDP
Tile Adhesive (C1/C2) High Viscosity (100k - 200k) Critical for meeting tensile strength standards (e.g., >1.0 MPa).
Wall Putty / Skim Coat Medium Viscosity (100k) Improves polishability and weather resistance.
EIFS / ETICS Mortar High Viscosity (150k - 200k) Provides necessary flexibility to absorb thermal expansion.
Self-Leveling Compound Low 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.