Impact of vibrations on the final characteristics of normal and self-compacting concrete
AUTOR(ES)
Juradin, Sandra, Baloević, Goran, Harapin, Alen
FONTE
Mat. Res.
DATA DE PUBLICAÇÃO
17/12/2013
RESUMO
The quality and durability of normal concrete directly depends on the number and the shape of voids, so, in order to produce durable concrete, it is necessary to reduce the amount of air that is trapped inside the concrete, which is usually done by vibrating the concrete in the mixing stage or the casting stage. Self-compacting concretes are concretes that, in principle, don't require vibrating during casting. Such concretes possess enough compactness and flowability through gravity that during pouring they fill all the space in the formwork. However, it is frequently the case that the ideal self-compacting concrete that is produced in a laboratory cannot be produced on a construction site so such concretes require additional vibrations. The work examines the impact that the introduction of vibrations during mixing and during casting has on the final appearance and the compressive strength of normal and self-compacting concretes. Achieved results confirm that vibrating during the mixing stage can improve the workability of fresh concrete but not its final strength, especially for self-compacting concretes, while vibrating in the casting stage significantly contributes to the final strength of the concrete.
Documentos Relacionados
- Experimental Investigation on Self-Compacting Self-Curing Concrete Incorporated with the Light Weight Aggregates
- Study of the compressive and tensile strenghts of self-compacting concrete with sugarcane bagasse ash
- A study of packing parameters that influence the fresh properties of self-compacting concrete
- Experimental analysis of eccentrically loaded reinforced concrete columns with an added jacket of self-compacting concrete
- Prediction of combined effects of fibers and nanosilica on the mechanical properties of self-compacting concrete using artificial neural network
