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Modified rule of constant water content for constant consistency of fresh fly ash concrete mixes

Hansen, T. C. / Hedegaard, S. E.

Abstract Experimental data are presented which suggest that the principle, of ‘constant free water content for constant consistency of fresh concrete’ (Lyse's Rule), which is one of the basic principles for design of normal concrete mixes without fly ash, also applies to fresh fly-ash concrete mixes. It is also shown that the plasticizing effect of fly ash on fresh concrete increases up to an addition of approximately 10% of fly ash by weight of cement, and then remains almost constant for higher contents of fly ash up to an upper limit content, which is defined in the paper.

Resume On présente des données expérimentales qui suggèrent que le principe de ‘teneur constante en eau libre pour une consistance constante du béton frais’ (règle de Lyse), qui constitue, un des principles de base pour le dosage du béton normal (sans cendres voltantes) s'applique aussi au béton frais aux cendres volantes. On montre également que l'effet plastifiant des cendres volantes sur le béton frais augmente jusqu'à une addition d'environ 10% de cendres volantes en poids de ciment, et se stabilise pour des teneurs plus élevées de cendres volantes jusqu'à une limite supérieure qui est définie dans cet article.

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Modified rule of constant water content for constant consistency of fresh fly ash concrete mixes

Hansen, T. C. / Hedegaard, S. E.

Abstract Experimental data are presented which suggest that the principle, of ‘constant free water content for constant consistency of fresh concrete’ (Lyse's Rule), which is one of the basic principles for design of normal concrete mixes without fly ash, also applies to fresh fly-ash concrete mixes. It is also shown that the plasticizing effect of fly ash on fresh concrete increases up to an addition of approximately 10% of fly ash by weight of cement, and then remains almost constant for higher contents of fly ash up to an upper limit content, which is defined in the paper.

Resume On présente des données expérimentales qui suggèrent que le principe de ‘teneur constante en eau libre pour une consistance constante du béton frais’ (règle de Lyse), qui constitue, un des principles de base pour le dosage du béton normal (sans cendres voltantes) s'applique aussi au béton frais aux cendres volantes. On montre également que l'effet plastifiant des cendres volantes sur le béton frais augmente jusqu'à une addition d'environ 10% de cendres volantes en poids de ciment, et se stabilise pour des teneurs plus élevées de cendres volantes jusqu'à une limite supérieure qui est définie dans cet article.

Modified rule of constant water content for constant consistency of fresh fly ash concrete mixes

Hansen, T. C. / Hedegaard, S. E.

Abstract Experimental data are presented which suggest that the principle, of ‘constant free water content for constant consistency of fresh concrete’ (Lyse's Rule), which is one of the basic principles for design of normal concrete mixes without fly ash, also applies to fresh fly-ash concrete mixes. It is also shown that the plasticizing effect of fly ash on fresh concrete increases up to an addition of approximately 10% of fly ash by weight of cement, and then remains almost constant for higher contents of fly ash up to an upper limit content, which is defined in the paper.

Resume On présente des données expérimentales qui suggèrent que le principe de ‘teneur constante en eau libre pour une consistance constante du béton frais’ (règle de Lyse), qui constitue, un des principles de base pour le dosage du béton normal (sans cendres voltantes) s'applique aussi au béton frais aux cendres volantes. On montre également que l'effet plastifiant des cendres volantes sur le béton frais augmente jusqu'à une addition d'environ 10% de cendres volantes en poids de ciment, et se stabilise pour des teneurs plus élevées de cendres volantes jusqu'à une limite supérieure qui est définie dans cet article.

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Title:

Modified rule of constant water content for constant consistency of fresh fly ash concrete mixes

Contributors:

Hansen, T. C. (author) / Hedegaard, S. E. (author)

Published in:

Materials and Structures ; 25 ; 347-354

Publication date:

1992-07-01

Size:

8 pages

ISSN:

1871-6873 , 1359-5997

DOI:

https://doi.org/10.1007/BF02472593

Type of media:

Article (Journal)

Type of material:

Electronic Resource

Language:

English

Keywords:

Portland Cement , Fresh Concrete , Cement Particle , Frais , Portland Cement Concrete Engineering , Theoretical and Applied Mechanics , Structural Mechanics , Mechanical Engineering , Operating Procedures, Materials Treatment , Civil Engineering , Building Materials

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