أي خصائص GRC يمكن لمستحلب الأكريليك تحسينها بوصفه معدلًا للأسمنت؟

Acrylic emulsion (acrylate copolymer emulsion), as a polymer modifier, can significantly improve the toughness of GRC (fracture energy increased by 300%), impermeability (water absorption reduced by 60%), and durability (freeze-thaw cycle resistance increased by 200%). Its optimal dosage is 8%-12% of the mass of cementitious materials.

In the curtain wall project of the Shenzhen Yirui Biotechnology Building, Qinglong GRC adopted an acrylic-emulsion-modified formula (10% dosage), which raised the flexural strength from 18MPa to 22MPa and the ultimate tensile strain from 0.015% to 0.025%. Electron microscopy analysis showed that the acrylic emulsion forms a continuous polymer film among the cement hydration products, and the fiber pull-out force increased by 50%. More importantly, after 300 freeze-thaw cycles, the modified specimens suffered a mass loss of only 0.5%, while the unmodified group reached 2.1%. This performance improvement reduced component thickness from 20mm to 15mm, achieving a lightweight breakthrough and creating conditions for super high-rise building applications.

Improved Mechanical Properties

Flexural strength increased by 20%-30%. Fracture energy increased from 100J/㎡ to 300J/㎡. Elastic modulus adjusted to 15-20GPa. Failure mode changed from brittle to ductile.

Enhanced Durability

Water absorption reduced from 10% to 4%. Chloride ion diffusion coefficient lowered by an order of magnitude. Frost resistance grade raised from F150 to F300. Carbonation rate slowed by 50%.

Optimized Construction Performance

Improved water retention reduces plastic cracks. Bond strength reaches 1.5MPa, which is beneficial for composite structures. Flexibility accommodates temperature-induced deformation. Surface smoothness improved.

Application Precautions

Dosage exceeding 15% reduces strength. Compatibility with water reducers requires experimental verification. Curing temperature should not exceed 70℃. Storage period should not exceed 6 months.

Acrylic emulsion modification requires systematic optimization. Through extensive experiments, Qinglong GRC has mastered the optimal application technology.