The effects of using pulverized fuel ash as partial substitute for cement in concrete

Utilization of pulverized fuel ash in Malta

“…The results of this study are in accordance with those of Man and Yeung (1997) who found that although the levels of radium were increased with incorporation of PFA as a partial cement replacement, 15% replacement was the optimal percentage substitution. Although the levels of radon were higher than normal with incorporation of PFA as partial cement substitute, this does not preclude using the PFA as in previous studies (Yu, 1994).…”

“…PFA can be used for a variety of applications including structural fills (Katz and Kovler, 2004), aggregate use in concrete construction (Wainwright and Cresswell, 2001;Siddique, 2003), partial cement replacement (Man and Yeung, 1997) and production of lightweight concrete (Yasar et al, 2003). The particular use will depend on the chemistry of the PFA (Conn et al, 1999).…”

Coal combustion residues—environmental implications and recycling potentials

“…It is reported that conditioned fly ash can be used as binder and that will find large-scale utilisation in replacement/substitution in Portland cement and admixture (McCarthy and Dhar, 1999;Man and Yeung, 2000). In construction work, where cementatious binders are required, CCRs can be used and will give equal or improved properties as compared to Portland cement binder.…”

Foamed concrete incorporating mineral admixtures and pulverized ceramics: Effect of phase change and mineralogy on strength characteristics

“…Foamed concrete as a lightweight material depends largely on the foam-to-slurry proportions, and its density can range within 300 and 1600 kg/m 3 . The use of sand, pulverized fuel ash (PFA), and quarry residue has been reported as suitable for foamed concrete production [17,18]. In foamed concrete, there are at least 20% (by volume) mechanically entrained foam in a plastic mortar [19].…”