树脂混凝土弯曲蠕变性能试验研究

Research on Creep Property of Resin Concrete by Bending Test

为了研究树脂混凝土的蠕变性能,开展了不同应力水平下的树脂混凝土弯曲蠕变试验;并应用三种蠕变变形发展模型对试验数据进行了拟合。结果表明:树脂混凝土弯曲蠕变发展符合三阶段的规律,初始阶段蠕变发展较快,第二阶段蠕变发展缓慢,试件断裂前蠕变发展突然加快并破坏;随着应力水平的增大,树脂混凝土弯曲蠕变变形发展加快。利用试验数据与模型拟合得到了模型参数,广义Kelvin十元件模型具有较好的预测性。

In order to investigate the creep property of resin concrete, bending creep tests under different stress level were conducted, fit three creep deformation models to the experimental data. The results show that the creep deformation confirm to the character of three-phase developed, creep developed rapidly in the initial stage and developed slowly in the intermediary stage, however, it developed sharply before the specimen ruptured and broken up finally. With the stress increasing, the bending creep deformation of resin concrete developed quickly. The parameters of the three models were obtained by .fitting the models to the experimental data. The generalized Kelvin with ten elements model is good to predict the creep development of resin concrete.