再生混凝土圆环应力分布分析及变形性能的研究

运用弹性力学原理分析计算了混凝土圆环应力分布并采用圆环试验方法监测了掺有粉煤灰、矿粉再生混凝土收缩变形趋势。试验结果表明，圆环试验能给混凝土提供完全且均匀的约束，能合理评价混凝土抵抗自收缩和干燥收缩综合作用变形能力。再生混凝土的收缩变形大于普通混凝土。粉煤灰、矿粉掺合料能降低再生混凝土收缩变形趋势。

Study of Stress and Deformation Performance of Recycled Concrete Ring

Stress distribution of concrete ring was calculated by using the principle of elastic mechanics. Ring test was used to monitor the shrinkage deformation trends of recycled concrete mixed with fly ash and mineral powder. Results show that the ring test would reasonably assess autogenous shrinkage and drying shrinkage deformation property of concrete by providing concrete a complete and uniform bound. The shrinkage deformation of recycled concrete is greater than that of ordinary concrete. Fly ash and mineral powder could significantly reduce the shrinkage deformation trends of recycled concrete.