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Study of the Anisotropy of the Roller Compacted Concrete (RCC) for Pavement
Mustapha Zdiri,Nor-edine Abriak,Mongi Ben Ouezdou,Jamel Neji 한국콘크리트학회 2010 International Journal of Concrete Structures and M Vol.4 No.1
The roller compacted concrete (RCC) is supposed to be isotropic, whereas the compaction of this material, which is achieved using the same machines used for the soil, appears only unidirectional, making the RCC an anisotropic material. In this experimental work, the influence of the phenomenon of compaction on the isotropy of the RCC is studied. This study was carried out through an evaluation of the compressive strengths and ultrasonic tests which were used for measurements of the elastic modulus and the dynamic Poisson"s ratio of the RCC as well as a qualitative judgement of the RCC aspect at the hardened state. The results of this work proved the anisotropy of the RCC and they showed the sensitivity of the mechanical strengths and the elastic modulus to the compaction direction.
Study of the Anisotropy of the Roller Compacted Concrete (RCC) for Pavement
Zdiri, Mustapha,Abriak, Nor-edine,Ouezdou, Mongi Ben,Neji, Jamel Korea Concrete Institute 2010 International Journal of Concrete Structures and M Vol.4 No.1
The roller compacted concrete (RCC) is supposed to be isotropic, whereas the compaction of this material, which is achieved using the same machines used for the soil, appears only unidirectional, making the RCC an anisotropic material. In this experimental work, the influence of the phenomenon of compaction on the isotropy of the RCC is studied. This study was carried out through an evaluation of the compressive strengths and ultrasonic tests which were used for measurements of the elastic modulus and the dynamic Poisson's ratio of the RCC as well as a qualitative judgement of the RCC aspect at the hardened state. The results of this work proved the anisotropy of the RCC and they showed the sensitivity of the mechanical strengths and the elastic modulus to the compaction direction.
Prediction and Measurement of the Bending Strength of the RCC
Zdiri, Mustapha,Ouezdou, Mongi Ben,Abriak, Nor-edine,Neji, Jamel Korea Concrete Institute 2009 International Journal of Concrete Structures and M Vol.3 No.1
The present work deals with the prediction, through models and experimental evaluation, of the bending strength of roller compacted concrete (RCC) for pavement applications. This concrete was manufactured using low cement proportioning (150 to $250\;kg/m^3$). The characterization of hardened RCC was carried out by experimental measurements of bending strengths. The predictions of these characteristics were achieved using empirical models. Comparison, of the values found in experiments with those empirically obtained, was made in order to choose and to propose the adapted and the most reliable models of prediction. The study showed that the bending strengths of the RCC mixture, experimentally found, can be also identified by models.
Prediction and Measurement of the Bending Strength of the RCC
Mustapha Zdiri,Mongi Ben Ouezdou,Nor-edine Abriak,Jamel Neji 한국콘크리트학회 2009 International Journal of Concrete Structures and M Vol.3 No.1
The present work deals with the prediction, through models and experimental evaluation, of the bending strength of roller compacted concrete (RCC) for pavement applications. This concrete was manufactured using low cement proportioning (150 to 250 kg/㎥). The characterization of hardened RCC was carried out by experimental measurements of bending strengths. The predictions of these characteristics were achieved using empirical models. Comparison, of the values found in experiments with those empirically obtained, was made in order to choose and to propose the adapted and the most reliable models of prediction. The study showed that the bending strengths of the RCC mixture, experimentally found, can be also identified by models.