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我院利用普通市售500克架盘天平(感量0.5克),改制成的固结与剪力试验环刀两用直读式土壤容重架盘天平,自1979年沿用至今,效果良好,其感量提高为0.2克,试验精度完全满足规程要求。现予以简要介绍。改进后的仪器全貌如照片所示。一、读数标尺主标尺用2.5mm厚的不透明白色有机玻璃制成,分上下两尺,上尺为固结试验容重读数,以γ_c表示;下尺为剪力试验容重读数,以γ_s表示(图1)。
The use of a common commercial 500-g rack balance (inductivity 0.5g) has been converted into a dual-purpose direct-reading soil bulk density rack scale for consolidation and shear tests. It has been used since 1979 and has achieved good results. The amount of inductance is increased to 0.2 grams, and the test accuracy fully meets the requirements of the regulations. This is a brief introduction. The improved instrument panorama is shown in the photo. First, the reading scale The main ruler is made of 2.5mm thick opaque white plexiglass. It is divided up and down two feet. The upper ruler is the consolidation test volume weight reading, denoted by γ_c; the lower ruler is the shear test weight reading, denoted by γ_s (Figure 1).