scholarly journals Use of biomass fly ash for mitigation of alkali-silica reaction of cement mortars

2012 ◽  
Vol 26 (1) ◽  
pp. 687-693 ◽  
Author(s):  
T.C. Esteves ◽  
R. Rajamma ◽  
D. Soares ◽  
A.S. Silva ◽  
V.M. Ferreira ◽  
...  
Keyword(s):  
Fly Ash ◽  
Alkali Silica Reaction ◽  
Cement Mortars ◽  
Biomass Fly Ash

scholarly journals The Influence of Cement Substitution by Biomass Fly Ash on the Polymer–Cement Composites Properties

Materials ◽  
2021 ◽  
Vol 14 (11) ◽  
pp. 3079
Author(s):  
Beata Jaworska ◽  
Dominika Stańczak ◽  
Joanna Tarańska ◽  
Jerzy Jaworski
Keyword(s):  
Fly Ash ◽  
Building Materials ◽  
Raw Materials ◽  
Combustion Process ◽  
Biomass Combustion ◽  
Cement Composites ◽  
Cement Mortars ◽  
Mineral Additive ◽  
Biomass Fly Ash

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.

The Influence of the Ash Addition from Thermal Power Plant on the Mechanical, Thermal and Dielectric Characteristics of Mortars

2018 ◽  
Vol 69 (8) ◽  
pp. 2040-2044
Author(s):  
Georgeta Velciu ◽  
Virgil Marinescu ◽  
Adriana Moanta ◽  
Ladislau Radermacher ◽  
Adriana Mariana Bors
Keyword(s):  
Thermal Conductivity ◽  
Fly Ash ◽  
Power Plant ◽  
Cement Mortar ◽  
Thermal Power ◽  
Total Content ◽  
Ash Content ◽  
Dielectric Losses ◽  
Dielectric Characteristics ◽  
Cement Mortars

The influence of fly ash adittion (90 % fraction [ 100 mm) on the cement mortar characteristics was studied. The XRD, XRF, SEM and FTIR determinations indicated that fly ash used has a hollow microstructure of microsphere and cenosphere whose total content in SiO2, Al2O3 and Fe2O3 is 88.63 % and that of CaO and MgO of 8.55 %. The mechanical, thermal and dielectric determinations made on mortar samples with content of fly ash in the 0-40 % range have highlighted fact that the mechanical strength of cement mortars is maximal at 20 %, the increase in fly ash content leads to a decrease in relative density and thermal conductivity as well as and to increased dielectric losses tgd.

Zeolites‐containing geopolymers obtained from biomass fly ash: Influence of temperature, composition, and porosity

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

Alkali activation of biomass fly ash–metakaolin blends

Fuel ◽  
2012 ◽  
Vol 98 ◽  
pp. 265-271 ◽  
Author(s):  
Rejini Rajamma ◽  
João A. Labrincha ◽  
Victor M. Ferreira
Keyword(s):  
Fly Ash ◽  
Alkali Activation ◽  
Biomass Fly Ash

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 ◽  
...  
Keyword(s):  
Fly Ash ◽  
Cement Based Materials ◽  
Hardened State ◽  
Biomass Fly Ash

Determination of optimal microwave curing cycle for fly ash mortars

2008 ◽  
Vol 35 (4) ◽  
pp. 349-357 ◽  
Author(s):  
İlker Bekir Topçu ◽  
Mehmet Uğur Toprak ◽  
Devrim Akdağ
Keyword(s):  
Fly Ash ◽  
Processing Parameters ◽  
Microwave Energy ◽  
Strength Prediction ◽  
Strength Development ◽  
Microwave Curing ◽  
Optimal Processing ◽  
Cement Mortars ◽  
Curing Cycle

Microwave energy can accelerate the hydration of cement, which results in the rapid strength development of concrete. In this paper, prediction of later age compressive strength of fly ash cement mortars, based on the accelerated strength of mortars cured with microwave energy, was investigated. To accelerate curing properly, optimal processing parameters of microwave curing (MC) on Portland cement mortars (CM) and fly ash cement mortars (FA) were first determined and then were applied to mortars. The possible early ages for the strength prediction were found to be at 6 and 8 h for CM and FA, respectively. The error percentages for prediction of CM were ±2.22% and 2.91% for 7 and 28 d, respectively. Error percentages for FA, on the other hand, were ±4.36% and 5.20% for 7 and 28 d, respectively.

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