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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 34 Abstracts search results
Document:
SP119-09
Date:
September 1, 1989
Author(s):
E. Hanna, K. Luke, D. Perraton, and P.-C. Aitcin
Publication:
Symposium Papers
Volume:
119
Abstract:
To study the interaction between either a given superplasticizer with different portland cements or the interaction of different superplasticizers on a given portland cement, a special apparatus called RHEOPUMP was developed. It is possible with this app
DOI:
10.14359/2462
SP119-10
S. Kakuta and T. Kojima
The rheological properties of fresh concrete were studied with three types of mixes containing a superplasticizer, an air-entraining agent, or a soluble polymer. A rotating fan-type rheometer with a table vibrator at the bottom of the container was used for studying the rheological properties of concrete under vibration. The acceleration and the pore water pressure of concrete were also determined. Although the flow curves of these mixes without vibration were of Bingham type, with vibration, they behaved as a Newtonian or a non-Newtonian fluid. The effect of admixtures under vibration could, therefore, be determined by rheological parameters such as coefficient of viscosity or a non-Newtonian power number. The flowing behavior of concrete was related to the pore water pressure and the acceleration. The excess pore water pressure was affected by the type of admixture. High pore water pressure resulted in concrete containing the soluble polymer.
10.14359/2468
SP119-26
M. Kawakami, S. Wada, and K. Suzukawa
Describes the effect of superplasticizer (SP) and air-entraining water-reducing admixture (AE-WRA) on spread, turbidity, pH, flowability, setting time, and compressive strength of colloidal underwater concrete. In summary, the studies resulted in the following conclusions: Spread was affected considerably by the SP and was not controlled by the AE-WRA; turbidity was affected by both SP and AE-WRA when the apparent viscosity of the concrete was low; pH was affected somewhat by the SP and AE-WRA; flowability was affected considerably by the SP; setting time was affected by both SP and AE-WRA when water-cement ratio was lower; the strength of underwater concrete was not affected by SP or AE-WRA amounts.
10.14359/2550
SP119
Editor: V.M Malhotra
To design and build state-of-the-art concrete structures, you need access to the latest information on materials and materials research. Bringing together the combined expertise of the chemical admixtures, cement, and concrete industries, Superplasticizers and Other Chemical Admixtures in Concrete will provide the answers you need on these important concrete admixtures. A collection of 33 papers, this ACI publication presents the latest findings on topics such as: superplasticizers--a global review with emphasis on durability and innovative concretes; reuse of returned concrete by hydration control; superplasticizers and concrete durability; evaluation of superplasticizers in concrete; chemical admixtures in concrete platforms; superplasticized concrete containing blast furnace slag; slump control with reactive polymeric dispersant; and physiochemical characterization of superplasticizers. Note: The individual papers are also available as .pdf downloads.. Please click on the following link to view the papers available, or call 248.848.3800 to order. SP119
10.14359/14152
SP119-06
J. Khorami and P. C.
Presently, most of the commercial superplasticizers used in concrete are characterized by their chemical formulation (melamine or naphthalene), their specific gravity, and their solid content. However, from a practical point of view, it is observed that t
10.14359/2430
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