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1、Experimental Study on Compressive Properties of Ultrahigh Toughness Cementitious Composites,Layout,BackgroundExperimental ProgramExperimental ResultsComparison of compressive strength between UHTCC and matrixComparison of strain at peak stress between UHTCC and matrix A theoretical stress-strain cur
2、ve modelConclusions,Background,Numbers of studies carried outpermeability and carbonation propertiestensile and bending propertiesfreeze-thaw propertiesno uniform test available for the compressive properties structural applications are limited,Experimental Program,Experimental Program,ResultsCompar
3、ison of compressive strength,Fig. 1. Comparison of prism compressive strength between UHTCC and matrix,ResultsComparison of strain at peak stress,Fig. 3. Comparison of strain at peak stress between UHTCC and matrix,Theoretical model,Ascending branch:,Strain hardening branch:,Descending branch:,Horiz
4、ontal branch:,Comparison of stress-strain curves,The chart shows the comparison between the predictions and the test data of UHTCC The predicted curves are obtained by using the experimental strain value at peak stress instead of the fixed value of 0.002.,Comparison of compressive strength,Conclusio
5、ns,The prism compressive strength decreases because of the fiber addition.The strain at peak stress is larger than that of matrix because of the fiber additionA theoretical model is provide which is needed for modeling its mechanical behavior or for permitting its use in various structural applications.,Thank You !,
