Abstract Torsional and flexural resonant column tests were conducted on sands grouted with a fine cement and the effects of confining pressure, strain, grout water-to-cement ratio (W/C) and sand grain size and shape were evaluated. Both types of excitation were applied on a single grouted sand specimen without causing specimen failure. Flexural excitation of grouted sands has not been reported in the literature to date. The grout W/C ratio had the strongest effect on the dynamic properties of the grouted sands and on the improvement of clean sand properties due to grouting. Depending on grout W/C ratio and confining pressure, the shear and Young's moduli, the torsional and flexural damping ratios and the Poisson ratio of the clean sands were improved by a factor of 6–36, 1.1–7.3 and 1.02–1.82, respectively.

中文翻译：

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灌浆砂的扭转和弯曲共振柱测试

摘要 在用细水泥灌浆的砂上进行了扭转和弯曲共振柱试验，并评估了围压、应变、灌浆水灰比（W/C）和砂粒尺寸和形状的影响。两种类型的激励都应用于单个灌浆砂试样，而不会导致试样失效。迄今为止，文献中尚未报道灌浆砂的弯曲激发。灌浆水灰比对灌浆砂的动态特性和由于灌浆而改善净砂性能的影响最大。根据灌浆水灰比和围压，清洁砂的剪切和杨氏模量、扭转和弯曲阻尼比以及泊松比分别提高了 6-36、1.1-7.3 和 1.02-1.82 .