A Study of the Relative Durability and Drying Shrinkage of Concrete using Various Retarders, R-234, 1971

A number of concrete admixtures are presently used in various concretes principally for water reduction, retardation, or air entrainment. Whereas the use of these admixtures in concrete placement is well documented, there is limited information showing their effects on durability and drying shrinkage. Since the durability and the shrinkage of concrete can have a pronounce effect on a structures longevity, wear characteristics, and reaction to loading, it is desirable to know the relative effects of different admixtures prior to concrete placement. The purpose of this study is to provide information which could be used to establish durability and shrinkage criterion for evaluating the admixtures currently in use and those whose use may be proposed.

Iowa Transportation Laws, HR-234, 1985

Research project HR-234 was sponsored by the Iowa Highway Research Board and the Iowa Department of Transportation. In the preparation of this compilation of highway and street laws of Iowa, an attempt has been made to include those sections of the Code to which reference is frequently required by the Department of Transportation, counties, cities and towns in their conduct of highway and street administration, construction and maintenance. Because of the broad scope of highway and street work and the many interrelated provisions of Iowa law, and in the interests of keeping this volume in a convenient and usable size, some Code provisions which have some bearing on the principal subject were of necessity omitted. The volume has been compiled in loose leaf form with the expectation that periodic updates will keep the reader informed regarding changes in the law and/or new laws. A general index is provided at the end of the text of this volume. Each major topic is divided into relevant subtopics and are accompanied by appropriate Code sections. This publication is offered with the hope and belief that it will prove to be of value and assistance to those concerned with the problems of establishing, maintaining and administering a highway and street system. The reader is cautioned to consult legal counsel on all matters beyond the scope of this text.

Friday Facts, November 21, 2014, Vol. 234

Bureau of Nutrition and Health Promotion part of the Iowa Department of Public Health produces of weekly newsletter about the Iowa WIC Program for the State of Iowa citizen.

IDED Quick News, March 27, 2003

Newsletter for Economic Development