RT Journal Article
T1 Microstructure and mineralogy of lightweight aggregates producedfrom washing aggregate sludge, fly ash and used motor oil
A1 González Corrochano, B.
A1 Alonso Azcárate, Jacinto
A1 Rodas González, Magdalena
A1 Luque Del Villar, Francisco Javier
A1 Fernández Barrenechea, José María
AB The microstructures and mineralogical compositions of lightweight aggregates (LWAs) manufacturedwith washing aggregate sludge (WS), fly ash (FA) and used motor oil (UMO) have been studied. MostLWAs with WS and FA exhibited an external layer and a glassy core with isolated pores. LWAs withWS and UMO did not present external shells or signs of bloating. Iron oxides, within the external layer,and pyrrhotite, in the inner glass, were observed. The mineralogical analyses revealed the neo-formationof plagioclase and pyroxene, along with minor gehlenite. Some relationships could be established: (i) thepresence of larger pores is related to a decrease in the dry particle density values, (ii) when the LWA lacksthe external layer, the water absorption values were dependent on the size and amount of each type ofpore (open or closed), and (iii) the neo-formation of Ca-plagioclase and the consumption of quartzimproved the compressive strength values.
PB Elsevier Applied Science
SN 0958-9465
YR 2010
FD 2010
LK https://hdl.handle.net/20.500.14352/42468
UL https://hdl.handle.net/20.500.14352/42468
LA eng
DS Docta Complutense
RD 10 abr 2025