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Fracture toughness of autoclaved portland cement/silica mixtures

Beaudoin, J.J.

AbstractFracture toughness measurements made at 11% RH on autoclaved cement/silica mixtures having a wide range of silica contents and porosities yielded a series of curves for Kc versus porosity and Kc versus silica content. Those for preparations having low porosity and silica content were unique. Apparently αC2S-hydrate, unreacted silica and pores having specific size distribution can act as crack arrestors. Kc versus hardness curves were similar to those for Kc versus porosity. Simple microhardness tests may be useful in predicting fracture toughness of autoclaved cementitious systems.

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Fracture toughness of autoclaved portland cement/silica mixtures

Beaudoin, J.J.

AbstractFracture toughness measurements made at 11% RH on autoclaved cement/silica mixtures having a wide range of silica contents and porosities yielded a series of curves for Kc versus porosity and Kc versus silica content. Those for preparations having low porosity and silica content were unique. Apparently αC2S-hydrate, unreacted silica and pores having specific size distribution can act as crack arrestors. Kc versus hardness curves were similar to those for Kc versus porosity. Simple microhardness tests may be useful in predicting fracture toughness of autoclaved cementitious systems.

Fracture toughness of autoclaved portland cement/silica mixtures

Beaudoin, J.J.

AbstractFracture toughness measurements made at 11% RH on autoclaved cement/silica mixtures having a wide range of silica contents and porosities yielded a series of curves for Kc versus porosity and Kc versus silica content. Those for preparations having low porosity and silica content were unique. Apparently αC2S-hydrate, unreacted silica and pores having specific size distribution can act as crack arrestors. Kc versus hardness curves were similar to those for Kc versus porosity. Simple microhardness tests may be useful in predicting fracture toughness of autoclaved cementitious systems.

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Title:

Fracture toughness of autoclaved portland cement/silica mixtures

Contributors:

Beaudoin, J.J. (author)

Published in:

Cement and Concrete Research ; 13 ; 81-88

Publication date:

1982-03-23

Size:

8 pages

ISSN:

DOI:

https://doi.org/10.1016/0008-8846(83)90130-8

Type of media:

Article (Journal)

Type of material:

Electronic Resource

Language:

English

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