Study of Creep in Lightweight And Conventional Concretes.
Study of Creep in Lightweight And Conventional Concretes.
Cassaro, Michael A., 1931-
The book Study of Creep in Lightweight And Conventional Concretes. was written by author Cassaro, Michael A., 1931- Here you can read free online of Study of Creep in Lightweight And Conventional Concretes. book, rate and share your impressions in comments. If you don't know what to write, just answer the question: Why is Study of Creep in Lightweight And Conventional Concretes. a good or bad book?
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The model agrees with the data. -88- Figure 20 compares the model with creep test data for specimens of test series C. The agreement Is not as good as for test series B. The apparent cause of the dlscrepency seems to be related to the delayed elastic element (third term) which recovers a greater amount of strain than It should. This effect was described earlier In connection with delayed elastic recovery of the specimen of series A. Not only was the average value of the structure coefficient A ...used In connection with elastic recovery, but the coefficient A was also declared Independent of time in the derivation of the stress dependent factor for the stability coefficient. These two assumptions, based on an Insufficient knowledge of the thermodynamic properties of the material with time, lead to low predicted values of concrete strain. If It were known how the coefficient A decreases with time and mix then a smaller recovery could be predicted and accuracy Improved. This effect only influences creep predictions at advanced ages.
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