cao - 环境工程学报.doc

粉煤灰和铁尾矿对烧结海泥多孔砖泛霜程度影响的试验分析 严捍东 陈秀峰 （华侨大学土木工程学院，福建 厦门361021） 摘 要 针对粉煤灰、铁尾矿两种不同特性工业废渣对烧结海泥多孔砖试样泛霜程度的影响进行了初步试验研究和分析。试验结果和分析表明，粉煤灰和铁尾矿分别等质量取代5％，10％，15％和20％海泥时，各配比原料土中可溶性硫酸根离子的质量浓度随粉煤灰和铁尾矿掺量的增加而减低，但粉煤灰的降低幅度远低于铁尾矿的降低幅度；经950℃烧结砖样中可溶性硫酸根离子均随粉煤灰和铁尾矿掺量增加而降低，对于粉煤灰来说该降低幅度几乎接近，对于铁尾矿来说则随铁尾矿增加而明显减小，但均远低于掺粉煤灰砖样。与粉煤灰相比，铁尾矿减轻烧结海泥多孔砖泛霜程度的有利因素更多。 关键词 粉煤灰 铁尾矿 烧结多孔砖 泛霜程度 海泥 中图分类号 X705 文献标识码 A 文章编号 Experimental analyses on the influences of fly ash and iron waste ore on the efflorescence degree of fired sea soil perforated brick Yan handong Chen Xiufeng (School of Civil Engineering, Huaqiao University, Xiamen, Fujian, P.R.China, 361021) Abstract The preliminary experimental studies and analyses on the influence of two kinds of industrial waste slag of fly ash and iron waste ore which have different characteristics on the efflorescence degree of fired sea soil perforated brick were carried out in this paper. The experimental results and analyses demonstrated that the mass concentration of the solubility SO42- in each proportion raw soil decreased with the increase of the incorporation content of fly ash and iron waste ore when 5%,10%, 15% and 20％ of sea soil were replaced by fly ash or iron waste ore at equivalent mass. But the decrease extent of fly ash was more lower than that of iron waste ore. The mass concentration of the solubility SO42- of brick sample fired at 950℃ also reduced with the increase of the incorporation content of fly ash or iron waste ore. The decrease extent for fly ash was almost approaching. The decreased extent for iron waste ore decreased obviously with the increase of iron waste ore, but the decreased extent was all lower than that of fly ash brick samples. Iron waste ore has more advantageous factors to alleviate the efflorescence degree of sea soil fired perforated brick than those of fly ash. Key words fly ash; iron waste ore; fired perforated brick; efflorescence degree; sea soil 随着沿海经济的发展和经济全球化进程的加快, 我国沿海港口、航道和河口的疏浚工程以及海岸工程建设产生的疏浚