Influence of Mineral Admixtures on Performance of Foam Concrete
LIU Baijun
ZHANG Guofang
ZHENG Wei
YING Linghui
LU Xiaopei
Abstract：A study was conducted to investigate the effects of three mineral admixtures—fly ash(FA),ground granulated blast furnace slag(GBFS),and titanium-extracted tailings(TS)—on the properties of foam concrete.The results indicated that all three admixtures could increase the bulk density of foam concrete to some extent,with TS showing the most significant effect.GBFS reduced the fluidity of foam concrete,while TS and low dosages of FA improved it.At low dosages,all three mineral admixtures increased the volumetric water absorption and capillary water absorption of foam concrete.However,at higher dosages,they reduced these properties,with TS and GBFS showing particularly notable reductions.At high dosages,all three admixtures significantly enhanced the compressive strength of foam concrete,with TS providing the most improvement.FA and GBFS increased the 28 d drying shrinkage of foam concrete,whereas TS significantly reduced it.Overall,the optimal dosage ranges for FA and GBFS were found to be 10%-15%,and for TS,5%-15%.
Keywords：foam concretefly ashgranulated blast furnace slagtitanium-extraction tailing slagpropertyoptimal content
Publication Date：2025-03-31
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：9( 252-260 )