| 摘要: |
| 对于长期浸泡在3%（质量分数，下同）硫酸钠溶液中的石灰石矿渣水泥抗硫酸盐腐蚀性能进行了初步研究，并与普通硅酸盐水泥砂浆进行了比较.结果表明：石灰石矿渣水泥显示出良好的长期强度发展和优异的抗硫酸盐性能.在硫酸钠溶液中浸泡360，730d后，石灰石粉掺量为60%，50%，40%的石灰石矿渣水泥砂浆试样的抗蚀系数（SRC）分别高达1.10，1.08，1.18和1.06，110，111，高于同期的普通硅酸盐水泥砂浆试样42.9%和55.9%以上；以标准养护28d试样的抗压强度为基准，石灰石粉掺量为60%，50%，40%的石灰石矿渣水泥抗压强度增加率分别达到369%，43.7%，48.3%和40.2%，55.3%，57.7%，普通硅酸盐水泥的抗压强度下降率则为5.2%和30.3%. |
| 关键词: 石灰石矿渣水泥 普通硅酸盐水泥 硫酸钠腐蚀 抗蚀系数 |
| DOI：10.3969/j.issn.1007 9629.2012.06.018 |
| 分类号: |
| 基金项目:武汉市科技攻关项目（200910221035） |
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| Research on Sulfate Resistance of the Limestone Slag Cement Mortars |
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ZHAO Qian, LIN Zong shou
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State Key Laboratory of Silicate Materials for Architectures, Wuhan University of Technology, Wuhan 430070, China
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| Abstract: |
| To compare with ordinary Portland cement mortars, the resistance to the sulfate attack of the limestone slag cement with different content of limestone powder which was immersed in 3%(by mass) Na2SO4 solution for a long period was investigated. The results show that the limestone slag cement has better long term strength and sulfate resistance; after being immersed in Na2SO4 solution for 360d and 730d, the sulfate resistance coefficient（SRC） of the limestone slag cement mortars containing 60%, 50%, 40% of limestone powder in test specimens reach 1.10，1.08，1.18 for 360d and 1.06，1.10，1.11 for 730d respectively. That is higher than the ordinary Portland cement mortars up to 42.9% and 55.9%. To compare the compressive strength of the limestone slag cement with that of ordinary Portland cement at the standard curing 28d, the compressive strength of the limestone slag cement can be increased by 36.9%,43.7%,48.3% and 40.2%，55.3%，57.7%, but the compressive strength of ordinary Portland cement can be decreased by 5.2% and 30.3%. |
| Key words: limestone slag cement ordinary Portland cement sulfate attack sulfate resistance coefficient |
