-160 ℃超低温冻融循环后花岗岩三点弯曲试验研究

吕敦波, 张帆, 张益峰, 杨科, 吕飞, 胡大伟

Experimental study on three-point bending of granite after cryogenic freeze-thaw cycles at -160 ℃

Dunbo LÜ, Fan ZHANG, Yifeng ZHANG, Ke YANG, Fei LÜ, Dawei HU

表1 不同冻融次数下花岗岩的质量、体积和密度

Table 1 Mass， volume and density of granite under different freeze-thaw times

循环次数/次 岩样编号 质量/g 体积/cm3 密度/（g·cm-3） 冻融前 冻融后 冻融前 冻融后 冻融前 冻融后 未冻融 F0-1 185.18 — 66.420 — 2.788 — F0-2 184.94 — 66.406 — 2.785 — F0-3 185.06 — 66.401 — 2.787 — 冻融1次 F1-1 183.97 184.28 66.296 66.383 2.775 2.776 F1-2 184.01 184.26 66.382 66.400 2.772 2.775 F1-3 185.44 186.79 66.394 66.426 2.793 2.812 冻融2次 F2-1 184.85 185.87 66.397 66.572 2.784 2.792 F2-2 184.54 184.62 66.167 66.077 2.789 2.794 F2-3 184.81 184.87 66.168 65.790 2.793 2.810 冻融3次 F3-1 185.15 185.29 66.007 66.009 2.805 2.807 F3-2 184.89 185.09 66.008 66.009 2.801 2.804 F3-3 185.11 185.19 66.016 65.998 2.804 2.806