Adhesion: analysis of parameters influence the formation of the interface substrate/matrix

• Grant number: 10/10843-7
• Support Opportunities: Regular Research Grants
• Start date: May 01, 2011
• End date: April 30, 2013
• Field of knowledge: Engineering - Civil Engineering - Construction Industry
• Principal Investigator: Vanderley Moacyr John
• Grantee: Vanderley Moacyr John
• Host Institution: Escola Politécnica (EP). Universidade de São Paulo (USP). São Paulo , SP, Brazil
• Associated researchers: Eliane Betânia Carvalho Costa ; Maria Alba Cincotto ; Rafael Giuliano Pileggi

Abstract

Adherence between cement matrix and other surfaces, like aggregates and ceramics are relevant not only for mortar technology, but also for concrete. This project aims to identify the measurable factors that influence on the adherence between substrate and cementitious matrix and propose viable technical solutions for improving this property. Although there are many studies about to interface substrate-matrix, these are specific studies with emphasis on the properties of cementitious matrix (paste or mortar) or substrate (aggregate or basis), without considering the interaction between materials. The research is based on a detailed characterization of the substrate (suction capacity, roughness, porosity), matrix (water retention, particle packing, rheology, mixture) and the system substrate-matrix (transport of fluids, changes in relation a/c). We expect to contribute to development of cementitious systems with better performance, lower environmental loads. For mortar application it is expected to increase durability helping to reduce the costs of maintenance and recovering. (AU)

Scientific publications

(4)

(References retrieved automatically from Web of Science and SciELO through information on FAPESP grants and their corresponding numbers as mentioned in the publications by the authors)

E. B. C. COSTA; B. L. DAMINELI; V. B. FREITAS; V. M. JOHN. Efeito do teor de substituição do ligante na aderência de argamassas. Rev. IBRACON Estrut. Mater., v. 8, n. 2, p. 66-87, 2015-04-00. (10/10843-7)

ELIANE BETÂNIA CARVALHO COSTA; FÁBIO ALONSO CARDOSO; VANDERLEY MOACYR JOHN. Efeito do teor e da dispersão de fino calcário na aderência substrato-matriz cimentícia. Ambient. constr., v. 16, n. 2, p. 21-34, 2016-06-00. (10/10843-7)

COSTA, E. B. C.; CARDOSO, F. A.; JOHN, V. M.. Influence of high contents of limestone fines on rheological behaviour and bond strength of cement-based mortars. CONSTRUCTION AND BUILDING MATERIALS, v. 156, p. 1114-1126, DEC 15 2017. (11/00948-9, 10/10843-7)

ELIANE BETÂNIA CARVALHO COSTA; FERNANDO AKIRA KUROKAWA; VANDERLEY MOACYR JOHN. Modelagem simplificada para estimativa do potencial de penetração de partículas em substratos porosos. Ambient. constr., v. 13, n. 1, p. 25-34, 2013-03-00. (10/10843-7)