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Retarding effect of grinding dust and its influence on the physical-mechanical and rheological properties of cementitious matrices
| IBRACON Structures and Materials Journal
Retarding effect of grinding dust and its influence on the physical-mechanical and rheological properties of cementitious matrices
Daniel Veras Ribeiro
Universidade Federal da Bahia
Marcio Raymundo Morelli
Universidade Federal de São Carlos
Jose da Silva Andrade Neto
Universidade Federal da Bahia
Raphael Dias Mariano
Universidade Federal da Bahia
Abstract
The present study evaluated the feasibility of the use of grinding dust (GD), a waste generated in the clutch disc finishing process, as a retardant additive in cementitious matrices. For this, the waste was added in contents of 5%, 10% and 15%, relative to the cement weight, and the setting time was determined by the Vicat method. In addition, the influence of this material on rheology (flow table, squeeze-flow and rotational rheometry) and on the physical-mechanical properties of the hardened matrices was analyzed. The results indicated an increase in setting time and a reduction on mortars fluidity as a function of GD addition and the best results for the hardened state properties were verified for the cementitious matrices containing 5% addition. Therefore, it was observed that the GD is effective in retarding the setting time, presenting great potential for use in civil construction, without impairing its properties.
Author Biographies
Daniel Veras Ribeiro, Universidade Federal da Bahia
Departamento de Ciência e Tecnologia dos Materiais. PhD
Marcio Raymundo Morelli, Universidade Federal de São Carlos
Departamento de Ciência e Tecnologia dos Materiais. PhD
Jose da Silva Andrade Neto, Universidade Federal da Bahia
Departamento de Ciência e Tecnologia dos Materiais. PhD
Raphael Dias Mariano, Universidade Federal da Bahia
Departamento de Ciência e Tecnologia dos Materiais. PhD