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A Method for Estimating the Dynamic Moduli of Cement Paste-Aggregate Interfacial Zones in Mortar

Published online by Cambridge University Press:  21 February 2011

Menashi D. Cohen ,
Turng-Fang F. Lee  and
Ariel Goldman
Menashi D. Cohen
Affiliation:
Purdue University School of Civil Engineering West Lafayette, IN 47907
Turng-Fang F. Lee
Affiliation:
Purdue University School of Civil Engineering West Lafayette, IN 47907
Ariel Goldman
Affiliation:
Purdue University School of Civil Engineering West Lafayette, IN 47907
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Abstract

The objective of this paper is to propose a method to estimate the average values of the dynamic modulus of elasticity and the dynamic shear modulus of cement paste-aggregate interfacial zones in mortar by applying the Logarithmic Mixture Rule (LMR). Both portland cement mortars (PC mortars) and portland cement mortars with silica fume (SF mortars) are investigated and compared, The influence of silica fume on the dynamic moduli of interfacial zone is also examined. Results indicate that for the specific ingredients and mix design used, the dynamic modulus of elasticity of interfacial zone falls between 0.4 and 2.0 (×10 6 psi) for PC mortar and 1.2 to 2.2 (× 106 psi) for SF mortar. These values are lower than the values obtained for PC mortar (4.2 ×106 psi), PC paste (2.7 ×106 psi), SF mortar (4.4 ×106 psi), and SF paste (2.5 × 106 psi).

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 370: Symposia Va/Vb – Microstructure of Cement-Based Systems/Bonding and Interfaces in Cement... , 1994 , 407
Copyright
Copyright © Materials Research Society 1995

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References

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