Strength and Durability of Mortar Using Cork Waste Ash as Cement Replacement

• Tipo: Artigo em Revista Científica Internacional
• Data: 2014

Autores

Telma Ramos (Autor) FEUP; Ana Mafalda Matos (Autor) FEUP; Joana Sousa Coutinho (Autor) FEUP

Revista

Título: Materials Research

Vol. 17 Nº 4

Páginas: 183-193

ISSN: 1516-1439

Editora: Universidade Federal de Sao Carlos

Indexação

ISI Web of Knowledge - 9 Citações

Scopus - 19 Citações

SciELO - Scientific Electronic Library Online

Classificação Científica

FOS: Ciências da engenharia e tecnologias > Engenharia civil

CORDIS: Ciências Tecnológicas

Outras Informações

ID Authenticus: P-009-W3W

DOI: 10.1061/(ASCE)MT.1943-5533.0000592

Abstract (EN): Cork powder, the major waste from cork processing industries, is generated from grinding, cutting and finishing operations throughout the industrial cork process. Cork powder has been used mainly as fuel in cork industries. Cork waste ash is usually landfilled but if efficiently used in cement based construction materials it could contribute to sustainability. Strength and durability testing was undergone on mortar with 10 and 20% cement replacement with cork waste ash. Although strength is acceptable for 10% cement replacement with cork ash (5% loss at 90 days, compared to control), most durability properties (tested up to 6 months according to test type) reduced performance probably due to a broader pore structure caused by coarse particles in the ash which tested non pozzolanic. Moreover, cork waste ash does not present the necessary requirements in terms of chemical properties considering several standards. Present work has revealed that this cork waste cannot be used as a pozzolan or as a filler in cement based materials. In fact it is known that chemical composition of biomass ash is highly variable due to moisture variations, ash yield and different genetic types of inorganic matter in biomass and therefore it is important to pinpoint which types of biomass waste are adequate or not to use as cement replacement in construction.

Idioma: Inglês

Tipo (Avaliação Docente): Científica