碳化养护对冶金渣-熟石灰砂浆性质的影响
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“十一五”国家科技支撑计划(2006BAF02A24)


Effect of the Carbonation on the Steelmaking Slag-Slaked Lime Mortar
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    摘要:

    主要研究了碳化养护对冶金渣熟石灰(SmS-SL)砂浆性质的影响,并通过XRD、真孔隙率和DTA/TG研究了影响机理和SmS-SL砂浆的环保效果。实验结果表明:碳化养护可提升SmS-SL砂浆的强度,改善它的体积稳定性和安定性。随着复合微粉中钢渣比例的提升,碳化养护对SmS-SL砂浆的增强效果逐渐提升,而对体积稳定性的改善效果却逐渐减弱。以钢渣为原料的SmS-SL砂浆的环保效果较为显著,其钢渣利用率达到27.8%,固碳率达到6.4%。

    Abstract:

    The effect of the carbonation on the properties of the steelmaking slag-slaked lime (SmS-SL) mortar and its mechanism were mainly investigated. Furthermore, the environmental benefits of the SmS-SL mortar were discussed as well. Results indicated that carbonation could strengthen the SmS-SL mortar, reduce its drying shrinkage and improve its soundness. With the increase in the steel slag content, the strengthening effect of carbonation on the SmS-SL mortar is enhanced, but its dry shrinkage reduction effect is weakened. The SmS-SL mortar using steel slag exhibits significant environmental benefits. Its CO2 sequestration-efficiency and steel slag-recycle efficiency respectively reaches 6.4% and 27.8%.

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曹伟达,杨全兵.碳化养护对冶金渣-熟石灰砂浆性质的影响[J].土木与环境工程学报(中英文),2014,36(4):92-97. Cao Weida, Yang Quanbing. Effect of the Carbonation on the Steelmaking Slag-Slaked Lime Mortar[J]. JOURNAL OF CIVIL AND ENVIRONMENTAL ENGINEERING,2014,36(4):92-97.10.11835/j. issn.1674-4764.2014.04.015

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  • 收稿日期:2014-01-18
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  • 在线发布日期: 2014-09-10
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