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Indentation Fracture of Macro-Defect-Free (MDF) Cements

Published online by Cambridge University Press:  21 February 2011

Yeong-Shyung Chou ,
J. J. Mecholsky Jr. ,
M. R. Silsbee ,
D. M Roy ,
J. H. Adair  and
P. Heiland
Yeong-Shyung Chou
Affiliation:
The Pennsylvania State University, University Park, PA 16802
J. J. Mecholsky Jr.
Affiliation:
The Pennsylvania State University, University Park, PA 16802
M. R. Silsbee
Affiliation:
The Pennsylvania State University, University Park, PA 16802
D. M Roy
Affiliation:
The Pennsylvania State University, University Park, PA 16802
J. H. Adair
Affiliation:
The Pennsylvania State University, University Park, PA 16802
P. Heiland
Affiliation:
The Pennsylvania State University, University Park, PA 16802
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Abstract

The fracture toughness of MDF (macro-defect-free) cement with different polymer contents has been investigated by the indentation-strength method and fracture surface analysis. It was found that the fracture toughness obtained by these two different techniques showed good agreement for the low (3 wt.%) polymer cement. The ultimate (apparent) toughnesses are 1.3 Mpam1/2 for low polymer content and 2.2 Mpam1/2 for high (8 wt.%) polymer content cement. Different microcracking and sponge-like microstructures have been observed and discussed.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 179: Symposium Y – Specialty Cements with Advanced Properties , 1989 , 123
Copyright
Copyright © Materials Research Society 1991

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