Estudo da incorporação de altos teores de argila calcinada no concreto compactado com rolo
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2010-09-28
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Universidade Federal de Goiás
Resumo
The rolled compacted concrete (RCC) is a still relatively new technique, but with growing
volume of use, a fact generated by its technical and economical advantages, requiring more
studies in order to use with greater efficiency, safety and economy.
This work deals with the RCC with high levels of replacement and addition of part of the
Portland cement by calcined clay pozzolan, aiming to analyze and quantify the improvements
of the concrete properties and reach a satisfactory level of use, which allows for improvement
or maintenance of the properties with a lower consumption of cement per cubic meter.
So its impacts on the properties of RCC for this type of mineral addition were studied for the
substitution levels adopted, checking the influence on the properties of the fresh concrete in
the consistency and the density. For the hardened concrete some mechanical properties and
durability were evaluated by compressive and tensile strength, capillarity and immersion by
water absorption, test of permeability by water and ultrasound test.
The use of calcined clay come together with the needs of the cement production for the
construction of dams in the north of the country, as the case of Santo Antônio / RO, because
its place is far removed from major industries and cement production slag, fly ash and silica
fume, requiring the study of materials to enhance the production of cement.
As an important result obtained with this research, it was found that substitution ranging from
27% to 50% achieved the best results, regarding the applicability of this material on the
surveyed properties.
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RIBEIRO, Adriano Mendes. Study of the incorporation of high amounts of calcined clay in roller compacted concrete. 2010. 227 f. Dissertação (Mestrado em Engenharias) - Universidade Federal de Goiás, Goiânia, 2010.