超高韧性水泥基复合材料的波传播试验研究

李庆华,舒程岚青

Experimental study on stress wave propagation in ultra high toughness cementitious composites

Qing-hua LI,Cheng-lan-qing SHU

表 2 两点法得到的波速计算表

Tab.2 Wave velocity calculation table calculated by two point method

I/MPa ∆L/mm ∆t/μs C/(km·s−1) C0/(km·s−1) 0.18 300 97.8 3.067 3.074 0.20 300 102.4 2.930 0.25 300 93.0 3.226 0.30 300 102.6 2.924 3.037 0.30 300 94.8 3.165 0.30 300 102.4 2.930 0.30 300 105.6 2.841 0.33 300 90.2 3.326 0.40 300 102.2 2.935 3.076 0.40 300 86.6 3.464 0.40 300 104.4 2.874 0.40 300 99.0 3.030 0.45 300 96.4 3.112 3.062 0.50 300 97.2 3.086 0.50 225 66.2 3.399 0.50 300 105.2 2.852 0.50 300 104.8 2.863