The testing result indicate that the testing performance of constringency transmutation testing apparatus for pavement material is excel to the straingauge in the stabilization and precision.
试验表明，路面材料收缩变形测试仪测试性能在准确性和稳定性等方面要优于应变仪。
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This paper describes the development, design principle and main features of type YCD-1 ultra-dynamic straingauge, and the application of it to straintesting in the near-blasting field.