Accuracy of estimating long-term strains in concrete

摘要: Synopsis A method developed earlier for estimating long-term creep and shrinkage from short-term measured test data is shown to be satisfactory predicting ten-year values. For water-stored concrete, swelling at ten years appreciable, therefore the extended predict swelling. Using thirty-year strain (extrapolated experimentally determined strain), five standard methods of prediction are compared in performance. When applied their basic form, all unsatisfactory it recommended that, depending on required accuracy, secant modulus elasticity used with Concrete Society/Cement Association strain. improved necessary use either author's or Bažant Panula model II method.