Acknowledgements

The author would like to thank Drs. Pierre Kalifa, Daniel Quenard, and Pierre Pimienta of Centre Scientifique et Technique du Batiment, France, for interesting discussions that stimulated this research, particularly Dr. Kalifa for the suggestion that the melting fibers could be locally absorbed by the surrounding cement matrix. He would also like to thank Dr. Long Phan of the Structures division of BFRL at NIST for supplying the samples for the TGA analysis of the concretes, Mr. Robert Lutz and Mr. David Savage of the Asphalt Materials Reference Laboratory (AMRL-NIST) for assistance with the viscosity measurements, and Dr. Clarissa Ferraris and Mr. John Winpigler (BFRL) for assistance in preparing the mortar specimens containing fibers.