Mahmoud M. Reda Taha

J. Hays

R. Grahn

A. K. Reinhardt

This report provides the results of a research study requested by New Mexico Department of Transportation (NMDOT) and conducted by University of New Mexico. The research team examined developing and characterizing self-consolidating concrete (SCC) produced using local New Mexico materials. It also includes a brief review on the state of the art of SCC. Five SCC mixes were produced using local New Mexico aggregate from two sources in New Mexico. SCC mixes are compared to normal vibrated concrete (NVC) mixes typically used in NMDOT highway projects and they were produced using the same local aggregate. Mix designs of the SCC and NVC mixes are described in detail. The plastic properties of fresh concrete are reported and discussed. Complete details on all strength and durability characteristics of SCC examined up to one year of age are discussed. The strength characteristics include compressive and flexural strength and static and dynamic modulus of elasticity. Creep and shrinkage of SCC are also studied as well as durability properties including chloride ion resistance, freeze-thaw durability, and the potential for alkali-silica reaction (ASR). The report concludes with a suggested implementation plan for using SCC in highway projects in New Mexico.

Examining Short and Long Term Properties of Self-consolidating Concrete (SCC)

J. N. Hays

A review of the original edition of The Burdens of Disease that appeared in ISIS stated, "Hays has written a remarkable book. He too has a message: That epidemics are primarily dependent on poverty and that the West has consistently refused to accept this." This revised edition confirms the book's timely value and provides a sweeping approach to the history of disease. In this updated volume, with revisions and additions to the original content, including the evolution of drug-resistant diseases and expanded coverage of HIV/AIDS, along with recent data on mortality figures and other relevant statistics, J. N. Hays chronicles perceptions and responses to plague and pestilence over two thousand years of western history. Disease is framed as a multidimensional construct, situated at the intersection of history, politics, culture, and medicine, and rooted in mentalities and social relations as much as in biological conditions of pathology. This revised edition of The Burdens of Disease also studies the victims of epidemics, paying close attention to the relationships among poverty, power, and disease.

J. Hays

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