Sign up for our Newsletter

Publications

Pro124

STUDY OF THE ADDITION OF DIFFERENT FLY ASH TYPES IN CEMENT MORTAR TILE ADHESIVE



Author(s): Ana C. Lourenço, Victor M. Ferreira, Pedro M. Sequeira, Luís M. Silva
Paper category: Proceedings
Book title: IV International Conference Progress of Recycling in the Built Environment
Editor(s): Isabel M. Martins, Carina Ulsen, Yury Villagran
ISBN:
e-ISBN: Isabel M. Martins, Carina Ulsen, Yury Villagran
Publisher: RILEM Publications SARL
Publication year: 2018
Pages: 464-471
Total Pages: 08
Language : English


Abstract: Fly ash is one of the main solid waste generated in coal-fired power plants It is well known for
its application in the production of cement and concrete, road construction and
stabilization/solidification of waste. For the previous mentioned uses, its incorporation implies,
in particular, a compressive strength increase. On the other hand, its introduction in systems
such as mortars, whose performance demands specific values for adhesion, also involve another
set of major challenges, particularly because it tends to induce an increase in resistance only at
a later stage due to the fact that its contribute to a retardation of hydration reactions, which
makes its use in these systems more limited by reducing adherence in the early ages. It is
recognized, however, that results obtained with fly ash incorporation can be enhanced
depending on the type. For that reason, the present work intends to evaluate the contribution of
the addition of two classes of fly ash (F and C) distinguished by the concentration of CaO in
their composition. In order to evaluate their potential, a comparison with well-known by-
products sources as slags, but with higher hydraulic behavior, was made. For this purpose, the
partial replacement of Portland cement by the indicated fly ash and blast furnace slag was
carried out at different levels and the main properties of the resulting mortars were evaluated
according to EN 12004.


Online publication : 2018
Publication type : full_text
Public price (Euros) : 0.00


>> You must be connected to view the paper. You can register for free if you are not a member