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.
Published
Nov 30, 2018
How to Cite
RIBEIRO, Daniel Veras et al. Retarding effect of grinding dust and its influence on the physical-mechanical and rheological properties of cementitious matrices. RIEM - IBRACON Structures and Materials Journal, [S.l.], v. 12, n. 3, nov. 2018. ISSN 1983-4195. Available at: <http://revistas.ibracon.org.br/index.php/riem/article/view/1579>. Date accessed: 20 june 2019.
Section
Artigos