The Quality of Testing / J. J. Waddell
- Author:
- Waddell, J. J.
- Physical Description:
- 1 online resource (4 pages) : illustrations, figures, tables
- Additional Creators:
- American Society for Testing and Materials
ASTM International - Access Online:
- ezaccess.libraries.psu.edu
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Subscription required for access to full text. - Summary:
- Quality is defined as ¿̐ưan attribute, characteristic, or property¿̐ư also ¿̐ưclass, kind, or grade.¿̐ư In considering, then, the quality of testing, thought should be given to the characteristics of the kind of testing desired, how this kind of testing can be recognized, and how it can be obtained. That testing of concrete and concrete materials is important and necessary has been demonstrated many times, especially when one reads of the spectacular structural failures caused by inferior materials. But there are other failures too, not so spectacular, but nevertheless serious and costly to the owner. Examples are popouts, cracking, and unsoundness of concrete resulting from the use of aggregates containing inferior constituents¿̐ưconstituents that would be revealed by proper tests, properly performed. Adequate quality control of materials, including laboratory and field tests, informs the engineer, architect, contractor, and owner of the properties of materials proposed for construction and serves as a guide to the producer in maintaining his product within specification limits. There was a time, many years ago, when the engineer or architect depended entirely on his own experience in judging the quality of materials; the stick poked into an earth embankment, how far the concrete would flow in a form, and similar methods of evaluation. These methods are still good. Knowledge gained through experience is still, and always will be, a vital part of engineering proficiency. However, the engineer today finds it not only desirable but also necessary to rely upon laboratory tests to inform him of the suitability of a material. Different materials, new materials, and new usages for old materials all contribute to the need for reliable, impartial tests to point the way for correct use of these materials. This is especially true in the field of concrete construction where we see the development of bold and sophisticated structures that were not considered possible a few years ago. Ultimate strength design, thin shells, new lightweight materials, and exposed aggregate finishes are typical of modern trends in the use of concrete.
- Dates of Publication and/or Sequential Designation:
- Volume 1966, Issue 169A (January 1966)
- Subject(s):
- ISBN:
- 9780803181090
9780803181137 (e-ISBN) - Digital File Characteristics:
- text file PDF
- Bibliography Note:
- Includes bibliographical references.
- Other Forms:
- Also available in PDF edition.
Also available online via the World Wide Web. Tables of contents and abstracts freely available; full-text articles available by subscription.
Full text article also available for purchase. - Reproduction Note:
- Electronic reproduction. W. Conshohocken, Pa. : ASTM International, 1966. Mode of access: World Wide Web. System requirements: Web browser. Access may be restricted to users at subscribing institutions.
- Technical Details:
- Mode of access: World Wide Web.
- Source of Acquisition:
- ASTM International PDF Purchase price USD25.
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