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Home > Publications > International Concrete Abstracts Portal
The International Concrete Abstracts Portal is an ACI led collaboration with leading technical organizations from within the international concrete industry and offers the most comprehensive collection of published concrete abstracts.
Showing 1-5 of 14 Abstracts search results
Document:
SP46
Date:
January 1, 1974
Author(s):
Editors: John R. Wilson and Edward J. Hyland
Publication:
Symposium Papers
Volume:
46
Abstract:
SP46 Proceedings from a combined "paper symposium" and "workshop session" on concrete proportioning technology held at an ACI annual convention. Nine papers presented at the paper symposium deal with proportioning techniques and technology for application in pumping concrete, gapgraded aggregate concrete, mass concrete, proportioning with admixtures, fIy ash, and other pozzolans, and high strength concrete. Four papers from the workshop session cover history of proportioning, normal weight concrete, and no slump concrete.
DOI:
10.14359/14099
SP46-07
Donald J. Hall
The paper describes the proportioning of the concrete mix ingredients required when a chemical admixture is used. Generally, the chemical admixture affects the water content, the air content, and the handling characteristics of the concrete. Since the yield of concrete would be affected, several methods of adjusting the mix ingredients are described.
10.14359/17871
SP46-01
Cedric Wilson
Presents basic principles of proportioning shrinkage compensating concrete mixtures using currently available expansive cements and relates them to proportioning mixtures using Type I cement. Properties which are common to all expansive cements and their differences are discussed. Conditions under which slump loss may occur when using some expansive cements are reviewed and methods for adjusting mixing water to compensate are given. Recommendations for the use of admixtures are made and importance of proper curing and adeqate internal restraint are discussed briefly.
10.14359/17865
SP46-02
G.W. Hollon and M.E. Prior
A discussion of the effect of purposefully entrained air on the properties of concrete. Factors which affect the entrainment of air in concrete such as cement, sand, and mix temperature are discussed. Strength reductions to be expected and suggested air contents as related to maximum size aggregate are shown.
10.14359/17866
SP46-13
William W. Hotaling, Jr.
The Recommended Practice for Selecting Proportions for Structural Lightweight Concrete (ACI 211.2-69) presents methods for designing structural lightweight concrete mixes, emphasizing their adjustment by employing a specific gravity factor. This in turn enables calculation of effective displaced volumes for the lightweight aggregate fractions in the mixture. Developed via a pycnometer, these factors are presented as a continuous function for a range of aggregate moisture contents. Also included in the Standard are adjustment guides as well as field control pointers.
10.14359/17877
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