Cambodia Arc de Triomphe Commercial Center
Background
Located in the core business district of Phnom Penh, Cambodia, this large-scale commercial complex operates under a tropical monsoon climate with annual temperatures exceeding 30°C, UV intensity reaching level 9, and annual rainfall surpassing 2000mm. The exterior walls must withstand intense UV radiation and persistent rain exposure, which easily causes coating powdering, cracking, and peeling; thus, the coatings require exceptional weather resistance and crack resistance. The technical plan adopts weather-resistant exterior paint as the main material, paired with specialized alkali-resistant primer and elastic crack-resistant topcoat. The self-crosslinking film-forming technology is employed to create a dense protective layer, meeting the construction requirements in high-humidity environments and preventing coating detachment caused by alkali penetration from the substrate. Prior to application, the wall surface undergoes grinding and dust removal to ensure a flatness deviation of no more than 3mm. During construction, the ambient temperature must be maintained between 20-35°C with relative humidity below 85%. The standard application procedure involves one coat of primer, two coats of topcoat, and one coat of finish, with the total dry film thickness reaching over 150μm. After completion, tests show the coating withstands over 2000 hours of artificial aging, with adhesion rated at grade 1, scrub resistance exceeding 10,000 cycles, and waterproof performance meeting Class I of GB/T 19250-2013 standards. The client praised the coating’s lasting color and excellent crack resistance, and a 5-year warranty is provided for subsequent maintenance.
