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Influence of cement type and curing conditions on lnitial absorption of concrete

Camarini, G. / Balayssac, J.P. / Detriche, C.H.

This paper deals with the 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 1 cm, 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 flier (12 % and 25 % by mass). These concretes were cured at two temperatures (20 deg C and 40 deg 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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Influence of cement type and curing conditions on lnitial absorption of concrete

Camarini, G. / Balayssac, J.P. / Detriche, C.H.

This paper deals with the 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 1 cm, 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 flier (12 % and 25 % by mass). These concretes were cured at two temperatures (20 deg C and 40 deg 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.

Influence of cement type and curing conditions on lnitial absorption of concrete

Camarini, G. / Balayssac, J.P. / Detriche, C.H.

This paper deals with the 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 1 cm, 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 flier (12 % and 25 % by mass). These concretes were cured at two temperatures (20 deg C and 40 deg 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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Title:

Influence of cement type and curing conditions on lnitial absorption of concrete

Additional title:

Einfluß der Zementart und der Abbindebedingungen auf die Anfangsabsorption von Beton

Contributors:

Camarini, G. (author) / Balayssac, J.P. (author) / Detriche, C.H. (author)

Published in:

High-Performance Concrete and Performance and Quality of Concrete Structures, CANMET/ACI International Conference, 2 ; 427-443

SP ACI special publications series / ACI, American Concrete Institute ; 186

Publication date:

1999

Size:

17 Seiten, 17 Bilder, 3 Tabellen, 8 Quellen

Type of media:

Conference paper

Type of material:

Print

Language:

English

Keywords:

Beton , Wasseraufnahmevermögen , Druckfestigkeit , Einflussgröße , Zement , Portlandzement , atmosphärische Bedingung , Feuchtigkeit

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