摘要
为研究高性能混凝土的声波传播特性及实现其强度的快速、准确、无损检测,基于超声波检测方法,应用嫩江、多宝山附近的沙石料,对高性能混凝土对声波的扩散性及其抗压性能与声参量之间的模型关系进行了研究.建立了高性能混凝土抗压强度与声速之间的多种数学模型.通过实测检测数据进行验证,满足精度要求.高性能混凝土的非均质性降低,其抗压强度与声速相关性较好,用超声的方法完全可以实现强度的快速推定.同时,也为将来高性能混凝土地区强度推定曲线的建立奠定了研究基础.
Fast and accurate non-destructive testing of high performance concrete is needed to ensure it is free of defects. The acoustic propagation characteristics of high performance concrete and the relationship between its compressive strength and ultrasonic parameters were studied by ultrasonic non-destructive methods using the sandstones of Nenjiang and Duobao mountains. Several mathematical models were developed for the compressive strength of high performance concrete and the velocity of sound. Precision requirements were met through referenee to actual measured data. Uneven quality of high performanee conerete can be reduced with better understanding of the relationship between compressive strength and the velocity of sound. This allows fast estimation of strength using ultrasound testing. At the time the paper provides some reference data for the foundation of a future regional strengthening curve for high performance concrete.
出处
《哈尔滨工程大学学报》
EI
CAS
CSCD
北大核心
2009年第6期632-634,共3页
Journal of Harbin Engineering University
基金
住房和城乡建设部基金资助项目(2008-K4-24)
黑龙江省教育厅基金资助项目(11531290)
关键词
高性能混凝土
声学特性
超声
强度
high performance concrete
acoustic characteristie
ultrasonie strength
