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  • 1
    Electronic Resource
    Electronic Resource
    Springer
    Materials and structures 21 (1988), S. 448-452 
    ISSN: 1359-5997
    Source: Springer Online Journal Archives 1860-2000
    Topics: Architecture, Civil Engineering, Surveying
    Notes: Abstract An attempt is made to develop a new workability test for fibre-reinforced concrete. The depth of penetration by a cone of specific dimensions and weight is observed to consistently reflect the workability of fibre-reinforced concrete in the fresh state. An extensive experimental investigation in which various conventional workability tests and the new cone penetration, test are conducted on fresh fibre concrete is described. The effect of fibre content, fibre geometry and water/cement ratio on workability as reflected by slump, ACI inverted cone, V-B time and the new cone penetration test are reported. Cones of different weights and angles are tried and it is observed that the penetration in millimetres by a cone of 4 kg weight and 30° apex angle may be taken as a measure of the workability.
    Type of Medium: Electronic Resource
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  • 2
    Electronic Resource
    Electronic Resource
    Springer
    Materials and structures 7 (1974), S. 265-271 
    ISSN: 1359-5997
    Source: Springer Online Journal Archives 1860-2000
    Topics: Architecture, Civil Engineering, Surveying
    Description / Table of Contents: Résumé On s'est appuyé sur plusieurs théories des matériaux composites pour prédire les propriétés mécaniques du béton. Dans beaucoup de cas, aucune base ne permet de juger de la supériorité relative d'un modèle sur un autre. Il importe pourtant que le modèle et les hypothèses qui lui sont associées soient axiomatiquement acceptables et qu'ils présentent une pertinence physique par rapport au problème étudié. On examine ici l'aptitude d'un nouveau modèle de matériaux polyphases à l'étude du béton. On montre que ce modèle permet de prédire le module de Young effectif et le retrait du béton très exactement pour ce qui regarde le comportement en fluage, qualitativement le modèle soutient la comparaison avec beaucoup d'autres modèles antérieurs. Mais une formulation plus affinée du problème du fluage exigera de nouvelles études.
    Notes: Abstract Several theories of composite materials have been used to predict the mechanical properties of concrete. In many cases there is no basis to judge the relative superiority of one model over that of the other. It is, however, essential that the model and the related assumptions are axiomatically acceptable, and have physical relevance to the problem under consideration. In this paper the suitability of a new model of multiphase materials to concrete is examined. It is shown that the model predicts the effective Young's modulus and shrinkage of concrete quite accurately. As far as prediction of creep behaviour is concerned, the model qualitatively compares well with many other models proposed earlier. However, further studies are essential into more refined formulation of the problem of creep phenomenon.
    Type of Medium: Electronic Resource
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  • 3
    Electronic Resource
    Electronic Resource
    Springer
    International journal of fracture 14 (1978), S. R135 
    ISSN: 1573-2673
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Type of Medium: Electronic Resource
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  • 4
    Electronic Resource
    Electronic Resource
    Springer
    International journal of fracture 12 (1976), S. 915-916 
    ISSN: 1573-2673
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Type of Medium: Electronic Resource
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