Biomass fly ash effect on fresh and hardened state properties of cement based materials

2015 ◽  
Vol 77 ◽  
pp. 1-9 ◽  
Author(s):  
R. Rajamma ◽  
L. Senff ◽  
M.J. Ribeiro ◽  
J.A. Labrincha ◽  
R.J. Ball ◽  
...  
Crystals ◽  
2021 ◽  
Vol 11 (3) ◽  
pp. 233
Author(s):  
Elisabete R. Teixeira ◽  
Aires Camões ◽  
Fernando G. Branco ◽  
José Campos Matos

The objective of this work was to assess the use of biomass fly ash (BFA) as cement replacement material or as an alkalinity source in high volume fly ash mortar and concrete. Mortar formulations were prepared with different types of cement replacement: fly ash from thermal power plants, BFA, a blend of two pozzolans, and small amounts of BFA or/and hydrated lime (HL). Mortar formulations were tested both in the fresh and hardened state. The replacement of cement by the two fly ashes led to a decrease in the mechanical strength. The best strength values were obtained when higher HL content was introduced in mortars, however, mortars with the lower BFA content presented the best results for the majority of the tests. In general, BFA has a similar effect on cementitious mortars to coal fly ash, having good performance as cement replacement.


2011 ◽  
pp. 133-146 ◽  
Author(s):  
Mario Berra ◽  
Giancarlo De Casa ◽  
Marcello Dell’Orso ◽  
Luigi Galeotti ◽  
Teresa Mangialardi ◽  
...  

2015 ◽  
Vol 76 ◽  
pp. 286-296 ◽  
Author(s):  
Mario Berra ◽  
Teresa Mangialardi ◽  
Antonio Evangelista Paolini

2009 ◽  
Vol 172 (2-3) ◽  
pp. 1049-1060 ◽  
Author(s):  
Rejini Rajamma ◽  
Richard J. Ball ◽  
Luís A.C. Tarelho ◽  
Geoff C. Allen ◽  
João A. Labrincha ◽  
...  

2019 ◽  
Vol 9 (1) ◽  
pp. 196-201
Author(s):  
Jacek Gołaszewski ◽  
Grzegorz Cygan ◽  
Tomasz Ponikiewski ◽  
Małgorzata Gołaszewska

AbstractThe main goal of the presented research was to verify the possibility of obtaining ecological self-compacting concrete of low hardening temperature, containing different types of cements with calcareous fly ash W as main component and the influence of these cements on basic properties of fresh and hardened concrete. Cements CEM II containing calcareous fly ash W make it possible to obtain self-compacting concrete (SCC) with similar initial flowability to analogous mixtures with reference cement CEM I and CEM III/B, and slightly higher, but still acceptable, flowability loss. Properties of hardened concretes with these cements are similar in comparison to CEM I and CEM III concretes. By using cement nonstandard, new generation multi-component cement CEM “X”/A (S-W), self-compacting concrete was obtained with good workability and properties in hardened state.


2020 ◽  
Vol 104 (2) ◽  
pp. 803-815
Author(s):  
Lisandro Simão ◽  
Andreia De Rossi ◽  
Dachamir Hotza ◽  
Manuel J. Ribeiro ◽  
Rui M. Novais ◽  
...  

Materials ◽  
2021 ◽  
Vol 14 (11) ◽  
pp. 3079
Author(s):  
Beata Jaworska ◽  
Dominika Stańczak ◽  
Joanna Tarańska ◽  
Jerzy Jaworski

The generation of energy for the needs of the population is currently a problem. In consideration of that, the biomass combustion process has started to be implemented as a new source of energy. The dynamic increase in the use of biomass for energy generation also resulted in the formation of waste in the form of fly ash. This paper presents an efficient way to manage this troublesome material in the polymer–cement composites (PCC), which have investigated to a lesser extent. The research outlined in this article consists of the characterization of biomass fly ash (BFA) as well as PCC containing this waste. The characteristics of PCC with BFA after 3, 7, 14, and 28 days of curing were analyzed. Our main findings are that biomass fly ash is suitable as a mineral additive in polymer–cement composites. The most interesting result is that the addition of biomass fly ash did not affect the rheological properties of the polymer–cement mortars, but it especially influenced its compressive strength. Most importantly, our findings can help prevent this byproduct from being placed in landfills, prevent the mining of new raw materials, and promote the manufacture of durable building materials.


Sign in / Sign up

Export Citation Format

Share Document