ブラックパネル温度の日較差マップ : 屋外での熱劣化環境の定量化(その2)

抄録

Heat damages building materials both chemically and mechanically. The fructuation of temperature of building elements induces thermal movement at joint gap, which causes fatigue failures of sealants or waterproof membranes. At the interface between paint and substate, thermal stress is generated by the difference of thermal expansivities. As black panel temperature represents the temperature of materials exposured outdoors, daily range of black panel temperature is an index of the intensity of thermal mechanical deterioration. The daily maximum and minimum black panel temperature are estimated by climatic elements, ambient temperature, wind velocity and solar radiation, at observatories in a period from 1976 to 1985. Then the averages of daily range of black panel temperature are plotted on the map. It shows that building materials in inland areas are suffered from more severer thermal mechanical deterioration environment.