SES_2008_presentation-Pour-Ghaz et al. 2008.pdf - Central Concrete

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Summary• Shrinkage on the Macroscale– Models are developed; however they do notconsider specific mechanisms• Shrinkage on the Mesoscale– Separate into shrinkage into paste andaggregate, however more work is needed tounderstand time dependence• Shrinkage on the Microscale– Pore space, pore size, and surface tension canbe used to describe shrinkage – lead to newstrategiesSociety of Engineering Science Oct 12-15, 2008, Slides Developed by Jason Weiss Slide 28 of 29
Thanks,M. Pour-Ghaz, R. Henkensiefken, G. Sant, J. H. Moonand W. J. WeissSociety of Engineering Science Oct 12-15, 2008, Slides Developed by Jason Weiss Slide 29 of 29
Page 1 and 2: Purdue UniversitySchool of Civil En
Page 3 and 4: OutlineShrinkageMacroscaleShrinkage
Page 5 and 6: Res. Stresses/ Strength (MPa)Residu
Page 7 and 8: Using Acoustic EmissionTo Assess Da
Page 9 and 10: Stress (MPa)Cumulative AcousticEner
Page 11 and 12: Shrinkage of DifferentCement Based
Page 13 and 14: Mesoscale Modeling of Shrinkage•
Page 15 and 16: Modeling Multi-Phasesat the Mesosca
Page 17 and 18: Modeling Multi-Phasesat the Mesosca
Page 19 and 20: A Few Main Concepts• Chemical Shr
Page 21 and 22: Volume Reduction (ml/g cem)Initial
Page 23 and 24: Background on One ShrinkageMechanis
Page 25 and 26: Shrinkage Strain ( )Drying Response
Page 27: Strain ( )Shrinkage Cracking100-10-

SES_2008_presentation-Pour-Ghaz et al. 2008.pdf - Central Concrete

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