合肥地区超声回弹测强曲线建立及验证

Establish and verification of ultrasonicresilience curve of hefei

超声回弹法检测混凝土强度具有广泛的工程实用价值。本文根据合肥地区混凝土施工特点,制作了不同强度等级、不同龄期混凝土试块,测量试块超声波速、回弹及抗压强度,在对国家超声回弹测强曲线在合肥地区使用适用性进行分析的基础上,建立了合肥地区超声回弹测强曲线,验证结果表明建立的地区测强曲线可以在合肥地区推广使用。

It has important engineering practice value that concrete strength is predicted By ultrasound- resilience method. According to concrete construction feature in hefei, concrete block is made in different strength degree and ages of concrete and the value of ultrasonic resilience and strength is meas- ured. Based on the applicability analysis of national ultrasound-resilience curve and engineering practice, local ultrasound-measurement resilience curve in hefei is established and applicability that can be used in hefei is proved by engineering practice.