This paper compared the differences between the Marshall and Gyratory method while designing and preparing mixture by coarse aggregates crush value and combustion test.

并对比马歇尔成型方法与旋转压实成型方法在设计成型混合料方面的差异，通过试件击实后的粗集料的破碎率以及燃烧法评价；

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This tester is used for testing the ring crush strength of the paperboard. With the proper accessories (optional), it's also available to test the column compress, ring crush.

检验瓦楞芯纸及牛皮纸样，其直立方向之耐压强度。配合各种附件可测试纸板之竖压强度、胶合强度及平压强度。

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This tester is used for testing the ring crush strength of the paperboard. With the proper accessories (optional), it's also available to test the column compress, ring crush.

检验瓦楞芯纸及牛皮纸样，其直立方向之耐压强度。配合各种附件可测试纸板之竖压强度、胶合强度及平压强度。

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