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(Reference retrieved automatically from Web of Science through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

Rationalizing the impact of aging on fiber-matrix interface and stability of cement-based composites submitted to carbonation at early ages

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Author(s):
Tonoli, G. H. D. [1] ; Pizzol, V. D. [1] ; Urrea, G. [2] ; Santos, S. F. [3] ; Mendes, L. M. [1] ; Santos, V. [2] ; John, V. M. [4] ; Frias, M. [5] ; Savastano, Jr., H. [2]
Total Authors: 9
Affiliation:
[1] Univ Fed Lavras UFLA, Dept Forest Sci, CP 3037, BR-37200000 Lavras, MG - Brazil
[2] Univ Sao Paulo, Fac Zootecnia & Engn Alimentos, Dept Biosyst Engn, Ave Duque de Caxias Norte 225, BR-13635900 Pirassununga, SP - Brazil
[3] Univ Estadual Paulista UNESP, Dept Mat & Technol, Fac Engn, V Ariberto Pereira da Cunha 333, BR-12516410 Guaratingueta, SP - Brazil
[4] Univ Sao Paulo, Dept Construct Engn, Escola Politecn, BR-05508900 Sao Paulo, SP - Brazil
[5] Eduardo Torroja Inst Construct Sci CSIC, C Serrano Galvache 4, Madrid 28033 - Spain
Total Affiliations: 5
Document type: Journal article
Source: Journal of Materials Science; v. 51, n. 17, p. 7929-7943, SEP 2016.
Web of Science Citations: 12
Abstract

The objective of this work is to show the effect of carbonation at early stages on fiber-cement composites and impact on hydration, chemical and dimension stability. Carbonation increased the content of CaCO3 polymorphs and consumed Ca(OH)(2) and other hydrated calcium phases. Micrographs and energy-dispersive spectrometry showed the CaCO3 formed is precipitated in the pore structure of the matrix, decreasing diffusion of Si, S, and Al during hydration. Therefore, a refining process of pore sizes is produced, and fiber-matrix interface in carbonated composites was improved, leading to volume stabilization of the composite, as indicated by lower drying shrinkage and lower porosity. (AU)

FAPESP's process: 13/50790-8 - Non conventional cement-based materials developed with industrial wastes as a contribution for a more sustainable industry
Grantee:Holmer Savastano Junior
Support Opportunities: Regular Research Grants
FAPESP's process: 13/23810-8 - Study of cementitious matrices with agroindustrial ashes and vegetable fibers for fibre-cement
Grantee:Valdemir dos Santos
Support Opportunities: Scholarships in Brazil - Post-Doctoral
FAPESP's process: 12/51467-3 - Agroindustrial wastes and their potential use as appropriate materials for housing and infraestructure (Agrowaste)
Grantee:Holmer Savastano Junior
Support Opportunities: Research Projects - Thematic Grants