引用本文摘 ? 要：針對?；⒅橥鈮ν獗叵到y服役過程存在的病害特征，利用非金屬超聲檢測儀測試了該系統在室內加速老化過程的劣化特征信號，對比分析了系統老化狀態對不同部位的超聲波波速、頻率特征信號的影響，研究了不同熱雨循環階段該系統的超聲波信號特征與宏觀裂縫位置的對應性。結果表明：對于不同熱雨循環下的?；⒅橥鈮ν獗叵到y，超聲波信號異常位置與裂縫位置具有較好的對應性，系統飾面層的劣化特征與超聲波波速信號異常數量的增長趨勢一致，據此可實現該系統劣化階段的無損檢測；隨著熱雨循環次數的增加，超聲波信號頻率中心由低頻向高頻轉移。 Abstract: Aiming at the disease characteristics of the external thermal insulation composite systems with glazed hollow bead (ETICS-GHB) during the service process, the degradation characteristic signals of the ETICS-GHB were carried out by a non-metallic ultrasonic detector in accelerated aging process indoors. The ultrasonic wave velocity and frequency characteristic signals of different parts of the ETICS-GHB were studied at different aging state. The relationship between ultrasonic signal characteristics and macro cracks location of this system in different heat-rain cycle stages was analyzed. The results show that the abnormal position of the ultrasonic signal has a good correspondence with the crack location for the ETICS-GHB under different heat-rain cycles, and the deterioration characteristics of the finish coating of the ETICS-GHB are consistent with the increasing number of abnormal ultrasonic wave velocity signals, and the degradation level of the ETICS-GHB can be achieved by the non-destructive testing. With the increase of heat-rain cycles, the frequency center of the ultrasonic signal shifts from low frequency to high frequency.
葉家輝,田靜靜,熊厚仁,等.基于超聲波技術的?；⒅橥鈮ν獗叵到y劣化特征研究[J].混凝土與水泥制品,2020(11):74-78. YE J H,TIAN J J,XIONG H R,et al.Research on Deterioration Characteristics of External Thermal Insulation Composite Systems with Glazed Hollow Bead Based on Ultrasonic Technology[J].CHINA CONCRETE AND CEMENT PRODUCTS,2020(11): 74-78.