HPMC with ASTM C387 & C109 Compliance

ASTM C387/C109 Compliant HPMC: Meeting Rigorous Construction Standards

In the construction industry, material performance must meet strict quality and safety standards. Hydroxypropyl Methyl Cellulose (HPMC) compliant with ASTM C387 and C109 ensures superior performance in cementitious mixtures, providing reliable water retention, workability, and compressive strength. Zongsheng, a leading HPMC manufacturer, produces high-quality cellulose ethers that meet these critical ASTM standards, guaranteeing consistency and durability in construction applications.

Understanding ASTM C387 & C109 Standards

ASTM C387 – Standard Specification for Packaged, Dry, Combined Materials for Mortar and Concrete

This standard specifies requirements for:
✔ Pre-mixed mortar and concrete materials
✔ Compressive strength at 7 and 28 days
✔ Water retention and workability
✔ Consistency and setting time

ASTM C109 – Standard Test Method for Compressive Strength of Hydraulic Cement Mortars

This test evaluates:
✔ Mortar strength development
✔ Curing performance
✔ Material durability

HPMC that complies with these standards ensures:

• Consistent quality in construction mixes

• Reliable strength development

• Optimal workability and adhesion

• Long-term durability

Why ASTM-Compliant HPMC Matters in Construction

1. Ensures Reliable Performance in Mortars & Concrete

• Maintains proper water retention for complete cement hydration

• Enhances workability and pumpability

• Reduces cracking and shrinkage

2. Guarantees Consistent Quality

• Batch-to-batch uniformity in viscosity and performance

• Meets strict industry requirements for construction materials

3. Improves Bond Strength & Durability

• Stronger adhesion to substrates (concrete, brick, block)

• Higher resistance to freeze-thaw cycles and weathering

4. Optimizes Construction Efficiency

• Extended open time for easier application

• Reduced material waste due to better workability

Applications of ASTM C387/C109 Compliant HPMC

✔ Tile Adhesives & Thin-Bed Mortars

• Improves adjustability time

• Enhances bond strength to prevent tile slippage

✔ Repair Mortars & Concrete Patches

• Ensures strong adhesion to existing structures

• Reduces shrinkage cracking

✔ Self-Leveling Underlayments

• Provides smooth flow characteristics

• Prevents segregation and cracking

✔ Exterior Insulation Finishing Systems (EIFS)

• Enhances crack resistance in base coats

• Improves weather durability

Zongsheng’s ASTM-Compliant HPMC: Key Features

Why Choose Zongsheng?

✅ Full ASTM C387/C109 Compliance – Rigorously tested for construction applications
✅ Custom Formulations – Tailored viscosity and performance for specific needs
✅ Strict Quality Control – ISO-certified manufacturing for consistent quality
✅ Global Supply Chain – Reliable logistics for fast delivery

How to Use ASTM-Compliant HPMC in Construction Mixes

Recommended Dosage:

• Tile adhesives: 0.2–0.5% of dry mix

• Repair mortars: 0.1–0.3%

• Self-leveling compounds: 0.05–0.2%

• EIFS & Plasters: 0.3–0.6%

Mixing Best Practices:

1. Pre-disperse HPMC in water (1:3 ratio) to prevent clumping.

2. Allow 20–30 minutes for full hydration.

3. Gradually add to dry mix and blend thoroughly.

Conclusion

For construction professionals seeking high-performance, standards-compliant HPMC, Zongsheng’s ASTM C387/C109-certified Hydroxypropyl Methyl Cellulose delivers:
✔ Guaranteed quality meeting industry benchmarks
✔ Enhanced workability and strength in mortars and concrete
✔ Long-term durability in harsh conditions

Contact Zongsheng today to request samples or discuss how our ASTM-compliant HPMC can improve your construction materials!