对一批不同龄期的掺粉煤灰或矿渣的钢纤维混凝土试件进行了超声波检测及抗压强度试验。
The steel fiber concrete with fly ash and slag of different ages by ultrasonic detection and compression strength were tested.
利用超声波技术并辅以电测法，对两组不同开口深度混凝土缺口梁的损伤断裂特性进行了试验研究。
It is conducted an experimental study on the damage and fracture characteristics of notched concrete beams with two groups of different depths by ultrasonic technology with strain gauge technique.
对试验结果进行了回归分析，建立了钢纤维混凝土超声波声速与抗压强度之间的关系曲线。
The relationship between ultrasonic velocity and compression strength was set up by regression analysis of the testing data.
对混凝土在双轴压疲劳荷载作用下超声波波速的变化规律进行了试验研究。
This paper presents a study on the histories of ultrasonic velocity variations of concrete specimen during biaxial cyclic compressive loading tests.
采用常规混凝土和冻融混凝土为试件，在材料万能试验机上进行了破坏实验，得到了不同荷载作用下超声波的波速。
Conventional and freeze-thawed concrete specimens were detected by a universal test machine. The relationship between supersonic velocity and loading was obtained.
采用常规混凝土和冻融混凝土为试件，在材料万能试验机上进行了破坏实验，得到了不同荷载作用下超声波的波速。
Conventional and freeze-thawed concrete specimens were detected by a universal test machine. The relationship between supersonic velocity and loading was obtained.
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