Research mould resistance assessment on building materials

Abstract

Vietnam has a tropical monsoon climate, is hot and humid, and has a coastline extending from north to south. The indoor environment of buildings is typically prone to be moist. This is an ideal condition for mold to grow, which negative effects on human health, change the composition and properties of materials that cause hazards for buildings,....  Research on mold resistance testing of building materials is being made at Center for Equipment, Environment and Labour Safety – Vietnam Institute for Building Materials in accordance with ASTM D3273-16. Test methods used three mold strains: Aureobasidium pullulans ATCC 9348, Aspergillus niger ATCC 6275 and Penicillium Sp ATCC 9849 were isolated for 10 to 14 days. Once the strain has reached optimal growth, inoculate these spores into soil medium containing 25 % peat moss (pH 5.5 - 7.0). A study to compare and evaluate the mold resistance of test samples: antibacterial gypsum ceiling panels, sound absorption mineral fiber Panels; normal gypsum board and MDF board are exposed to an environment containing these fungal spores at a temperature of 32.5 ± 1 ^oC and a humidity of 95 ± 3 % for 04 weeks. This paper describes the content method, evaluation results, and comparison of mold resistance of some common mold resistant building materials in the Vietnamese market.