| Full text | |
| Author(s): |
R. A. Rojas-Ramírez
[1]
;
M. H. Maciel
[2]
;
R. C. O. Romano
[3]
;
R. G. Pileggi
[4]
;
A. C. V. Coelho
[5]
Total Authors: 5
|
| Affiliation: | [1] Universidade de São Paulo, Escola Politécnica. Departamento de Engenharia Metalúrgica e de Materiais. Laboratório de Matérias-Primas Pérsio de Souza Santos - Brasil
[2] Universidade de São Paulo. Escola Politécnica. Departamento de Engenharia e Construção Civil - Brasil
[3] Universidade de São Paulo. Escola Politécnica. Departamento de Engenharia e Construção Civil - Brasil
[4] Universidade de São Paulo. Escola Politécnica. Departamento de Engenharia e Construção Civil - Brasil
[5] Universidade de São Paulo, Escola Politécnica. Departamento de Engenharia Metalúrgica e de Materiais. Laboratório de Matérias-Primas Pérsio de Souza Santos - Brasil
Total Affiliations: 5
|
| Document type: | Journal article |
| Source: | Cerâmica; v. 65, n. 373, p. 107-116, 2019-01-00. |
| Abstract | |
Abstract In the process to obtaining vermiculite a fine residue is generated, which does not yet have a large-scale application. An alternative that has been studied is the association with Portland cement in mortar and concrete formulations, due to the chemical composition of the residue: high amount of aluminium, silicon and magnesium which may have interactions with the binder. As the objective of this work was to evaluate the impact of the use of the residue on the cementitious compositions without altering the water-to-solid ratio, the compositions were mixed using the same amount of water, independently of the changes in the consistency of the mortars. Replacement levels were varied from 5 to 20% and Archimedes immersion, tensile strength in diametrical compression, dynamic modulus of elasticity and air permeability tests were used. The results indicated that up to the 10% substitution content there were no statistically significant changes in the products, independently of calcination process. (AU) | |
| FAPESP's process: | 14/50948-3 - INCT 2014: advanced eco-efficient technologies in cementitious products |
| Grantee: | Vanderley Moacyr John |
| Support Opportunities: | Research Projects - Thematic Grants |