Standard Test Method for Portland-Cement Content of Hardened Hydraulic-Cement Concrete Withdrawn 2019 PDF Download
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Languages : en
Pages : 0
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Languages : en
Pages : 6
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Author: American National Standards Institute
Publisher:
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Category : Portland cement
Languages : en
Pages : 5
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Author: Joseph F. Lamond
Publisher: ASTM International
ISBN: 0803133677
Category : Technology & Engineering
Languages : en
Pages : 661
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Languages : en
Pages : 0
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Author: Stephen J. Kelley
Publisher: ASTM International
ISBN: 0803120060
Category : Historic buildings
Languages : en
Pages : 445
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Collects some 30 papers dealing with philosophical, methodological, and technical standards in building preservation. The first section of papers present a general view of preservation. The second section offers papers which discuss the different approaches to preservation practice. The third sectio
Author: L. J. Minnick
Publisher:
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Category : Concrete
Languages : en
Pages : 14
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Determination of the portland cement content of hardened concrete is often a matter of concern to engineers and chemists working with mortars and concretes. Unfortunately, a precise method of analysis has not been developed due to the many complexities of the material under test. Difficulties include the selection of representative samples, the presence of aggregate materials from unknown sources, the use of portland cements that differ substantially from an average composition, the presence of admixtures or additions (such as pozzolans or finely ground slag), the degree of hydration of the cement, the effect of carbonation as contrasted with hydration, and the effect of leaching of the concrete. In view of such formidable obstacles, chemical procedures demand that every effort should be made to obtain samples of the materials used in the concrete mixture. Where adequate information is obtained on the coarase and fine aggregate and cementing material, a reasonably accurate estimate of the cement content of hardened concrete can be made by chemical methods. In the absence of sufficient information on the source materials, assumptions must be made with respect to the amount of soluble substances that may be contributed to the analysis by the aggregate fractions and with respect to the ratio of aggregate materials present in the mixture. The assumptions affect the reliability of the test results. In some instances, the use of several schemes of analysis should be considered since the information derived from one method may assist in interpreting the results derived from an alternate method. This report outlines several methods that have been employed to determine the cement content of hardened concrete and indicates the reliability of the results that have been obtained, with emphasis being given to the procedure that is available as ASTM Test for Cement Content of Hardened Portland Cement Concrete (C 85). Results of cooperative tests undertaken by ASTM Committee C-9 to evaluate the reliability of the ASTM method of test are presented.
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Publisher: ASTM International
ISBN:
Category :
Languages : en
Pages : 389
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Author: Edward G. Nawy
Publisher: CRC Press
ISBN: 1040062830
Category : Technology & Engineering
Languages : en
Pages : 2177
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The Concrete Construction Engineering Handbook, Second Edition provides in depth coverage of concrete construction engineering and technology. It features state-of-the-art discussions on what design engineers and constructors need to know about concrete, focusing on - The latest advances in engineered concrete materials Reinforced concrete construction Specialized construction techniques Design recommendations for high performance With the newly revised edition of this essential handbook, designers, constructors, educators, and field personnel will learn how to produce the best and most durably engineered constructed facilities.
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Languages : en
Pages : 0
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