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- W2388083498 abstract "Through long-term tests for the shrinkage strain of concrete circular column specimens,we've found that internal shrinkage strain is generally less than external shrinkage strain.Furthermore,the shrinkage strains grow rapidly in earlier stage and gradually reduce in later stage,and the curve tends to be flat at last.The internal and external shrinkage strains take up 10.8%and 13.3%of the maximum shrinkage strain respectively in 20days,36.5%and 37.7%respectively in 100days,83.2%and 80.9%respectively in a year.Based on the contrastive study of international and domestic prediction models for shrinkage strain with B3coefficient of variation and B3variance,a new prediction model for concrete shrinkage strain is proposed.The new model has integrated the logarithmic function calculation theory of the GZ(1993)model with the hyperbolic function theory of GL2000model.At the same time,related parameters of the model developed by China Academy of Building Research are used as references.Thus,the predicted data by the new model deviate less from measured data no matter in earlier stage or in later stage.The predicted shrinkage strain curves basically agree well with measured fitting curves and the prediction accuracy has been greatly improved compared with other models." @default.
- W2388083498 created "2016-06-24" @default.
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- W2388083498 date "2013-01-01" @default.
- W2388083498 modified "2023-09-25" @default.
- W2388083498 title "Study on Prediction Model of Concrete Shrinkage Strain" @default.
- W2388083498 hasPublicationYear "2013" @default.
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