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高炉氯化矿渣作为复合细骨料在离心混凝土中的应用
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作者 兰文德 《混凝土世界》 2015年第3期76-78,共3页
本文通过对高炉氯化矿渣(以下简称矿渣)作为复合细骨料在离心混凝土中应用的探索试验,分析矿渣与高含泥量砂复合对混凝土拌合物及其离心成型效果和预制构件压蒸养护等环节的影响。为拓宽矿渣在混凝土中的应用,解决高含泥量砂的应用提供... 本文通过对高炉氯化矿渣(以下简称矿渣)作为复合细骨料在离心混凝土中应用的探索试验,分析矿渣与高含泥量砂复合对混凝土拌合物及其离心成型效果和预制构件压蒸养护等环节的影响。为拓宽矿渣在混凝土中的应用,解决高含泥量砂的应用提供思路。本试验结果表明,矿渣作为复合细骨料在离心混凝土中应用能起到积极作用,改善含泥量砂混凝土拌合物和易性,美化离心混凝土内壁的成型效果,同时减少离心混凝土预制构件压蒸内壁出现龟裂的数量,一定程度上提高了混凝土强度,增强了混凝土构件耐久性。 展开更多
关键词 高炉氯化矿渣 细骨料 离心 混凝土
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Effect of ground granulated blast-furnace slag(GGBFS) and silica fume(SF) on chloride migration through concrete subjected to repeated loading 被引量:3
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作者 ZHANG WuMan BA HengJing 《Science China(Technological Sciences)》 SCIE EI CAS 2012年第11期3102-3108,共7页
The effect of ground granulated blast-furnace slag(GGBFS) and silica fume(SF) on the chloride migration through concrete subjected to repeated loading was examined.Portland cement was replaced by 20%,30%,40% GGBFS and... The effect of ground granulated blast-furnace slag(GGBFS) and silica fume(SF) on the chloride migration through concrete subjected to repeated loading was examined.Portland cement was replaced by 20%,30%,40% GGBFS and 5%,10% SF,respectively.Five times repeated loadings were applied to specimens,the maximum loadings were 40% and 80% of the axial cylinder compressive strength(f′c),respectively.Chloride migration through concretes was evaluated using the rapid chloride migration test and the chloride concentration in the anode chamber was measured.The results indicate that the transport number of chloride through concrete containing 20% and 30% GGBFS replacements and 5% and 10% SF replacements is lower than that of the control concrete,but 40% GGBFS replacement increases the transport number of chloride.Five loadings at 40% f′cor 80% f′c increase the transport number of chloride for all mixes investigated in this study.5% SF replacement has a very close effect on the chloride permeability of concrete with 20% GGBFS when concrete is subjected to 40% f′cor 80% f′c. 展开更多
关键词 CONCRETE ground granulated blast-furnace slag (GGBFS) silica fume (SF) chloride migration repeated loading
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