Efeitos do uso de aditivo com nanosílica em suspensão coloidal na consistência e resistência mecânica do concreto
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Data
2017-04
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Ricardo Prado Abreu Reis
Resumo
The concrete’s performance depends on its behavior in the fresh and hardened states. Generally, studies of nanosilica (nS) are focused on performance analysis in the hardened state and they are founded on the use of the mineral admixture in dry grains. Thus, this paper aims to evaluate the effects of superplasticizer admixture use with nanosilica in colloidal suspension in the consistency and strength of the concrete. Two mixtures were produced with the same materials and identical proportions, however with different superplasticizes, one with and the other without nanosilica. The mixture without nanosilica (CC) was used as reference to analyse the effects of the presence of mineral admixture in the other mixture (CnS), both in the development of the consistency and the mechanical strength of the concrete. For evaluation of these properties were carried slump tests as a function of time and compressive strength at 28 days. The results showed that the concrete without nanosilica presented greater time available for handling and also higher slump values throughout the test. However, the concrete with the superplasticizer with nanosilica performed better in the hardened state, reaching highest mechanical strength.
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Concreto, Aditivo superplastificante, Nanosílica, Consistência, Resistência dos materiais, Concrete, Superplasticizer admixture, Nanosilica, Consistence, Mechanical strength
Citação
CAMPOS NETO, Tiago Ferreira; GEYER, André Luiz Bortolacci. Efeitos do uso de aditivo com nanosílica em suspensão coloidal na consistência e resistência mecânica do concreto. Revista Eletrônica de Engenharia Civil, Goiânia, v. 13, n. 2, p. 162-172, 2017. Disponível em: <https://www.revistas.ufg.br/reec/article/view/45802/pdf>.