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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.
Title: Influence of Cement Type and Curing and Conditions on Initial Absorption of Concrete
Author(s): G. Camarini, J. P. Balayssac, and Ch. H. Detriche
Publication: Special Publication
Appears on pages(s): 427-444
Keywords: air-void system; blast furnace slag; compressive strength; freezing and thawing durability; high-performance concretes; silica fume; superplasticizer
Abstract:This paper deals with measurement of concrete durability by means of initial absorption test of the concrete surface. The criterion used for this analysis is the amount of water absorbed after one hour. The specimens were placed in a constant water level of 1cm, and the quantity of absorbed water was measured by mass. It was observed the influence of cement type, temperature, relative humidity and surface protection in the initial absorption. Two concrete mixtures were made with ordinary portland cement blended with calcareous filler (12% and 25% by mass). These concretes were cured at two temperatures (20 degrees C and 40 degrees C) and different relative humidities (30%, 60%, and 100%). In some specimens a curing compound was used to observe its influence on surface protection from initial water absorption. The concrete strengths ranged from 28 to 62 Mpa. The experimental results showed that by changing the relative humidity from 60% to 100% during 7 days, the initial absorption can diminish by a factor of 2. The curing temperature can increase the initial absorption by 64%. The curing compound have a real influence in the concrete initial absorption.
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