Effect of rare earth Ce4+ content on the properties and form mechanism of foamed concrete

摘要

Foamed concrete is prepared with sulphate aluminum cement, fly ash, H2O2, FeCl3, calcium stearate and Ce(SO4)2.4H2O in this paper. In the component of foamed concrete, ash is used replacing cement partially (up to 20% by weight), H2O2 and FeCl3 as a foaming agent, as a foam stabilizer and Ce(SO4)2.4H2O as additives. The impact of the content of fly ash, H2O2 and Ce(SO4)2.4H2O on the properties of density and compressive strength of foamed concrete was investigated respectively, as well as the additive of rare earth Ce4+ in the formation of foamed concrete was analyzed. Results of the study show that foamed concrete with the properties of density of 215-320kg/m3 and compressive strength of 0.2-0.65Mpa can be prepared. Ce4+ can be used as foam stabilizer, make shorting the foaming time, improving the foaming ability, and reducing the dry density of the foamed concrete apparently.