Alkali-activated fly ashes: Influence of curing conditions on mechanical strength

• Type: Article in International Scientific Journal
• Date: 2017

Authors

Filipe Almeida (Author) FEUP; Nuno Cristelo (Author) Other; Tiago Miranda (Author) Other; Castorina Silva Vieira (Author) FEUP; Maria de Lurdes Lopes (Author) FEUP; Fernando Castro (Author) Other

Journal

Title: U.Porto Journal of Engineering

Vol. 3 No. 1

Pages: 57-67

Publisher: Universidade do Porto. Faculdade de Engenharia

Indexing

Scopus - 0 Citations

Other information

Authenticus ID: P-00P-XGS

DOI: 10.24840/2183-6493_003.002_0006

Abstract (EN): Alkaline activation of fly ashes is a procedure that enables an alternative binder which has been receiving much interest by several research groups particularly on the manufacturing of mortars and concretes. The properties of the materials that are developed during the alkaline activation are influenced by the curing conditions (temperature and relative humidity). Another relevant facet related to the curing procedures is the possibility of carbonation occur, which may have an impact on the mechanical strength of the alkaline cements. In this research, several sets of curing conditions were tested to understand which one results in a higher strength and reveals carbonation. Uniaxial compressive strength tests were conducted to assess mechanical behavior. The outcome suggests that higher temperature and low relative humidity yields higher mechanical strength.

Language: English

Type (Professor's evaluation): Scientific

No. of pages: 11