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1、LayoutBackgroundExperimental ProgramExperimental ResultsComparison of compressive strength between UHTCC and matrixComparison of strain at peak stress between UHTCC and matrix A theoretical stress-strain curve model A theoretical stress-strain curve modelConclusionsConclusions第1页/共12页BackgroundNumbe
2、rs of studies carried outpermeability and carbonation propertiestensile and bending propertiesfreeze-thaw propertiesno uniform test available for the compressive properties structural applications are limited第2页/共12页Experimental Program第3页/共12页Experimental ProgramTable 1.Specimen Information of Each
3、 GroupTable 1.Specimen Information of Each GroupTest seriesSpecimen shapeSpecimen size/mmSpecimen numberSuffix representationUHTCC Prism40401609ap40uMatrixPrism40401609ap40m第4页/共12页ResultsComparison of compressive strength Fig.1.Comparison of prism compressive strength between UHTCC and matrix第5页/共1
4、2页ResultsComparison of strain at peak stress Fig.3.Comparison of strain at peak stress between UHTCC and matrix第6页/共12页Theoretical modelAscending branch:Strain hardening branch:Descending branch:Horizontal branch:第7页/共12页Comparison of stress-strain curvesThe chart shows the comparison between the pr
5、edictions 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.第8页/共12页Comparison of compressive strength第9页/共12页ConclusionsThe 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.第10页/共12页Thank You!第11页/共12页感谢您的观看!第12页/共12页
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