Factors influencing chloride-binding in concrete
Factors influencing chloride-binding in concrete
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DOI：
10.1016/0008-8846(90)90083-a
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发表时间：
1990-03
影响因子：
11.4
通讯作者：
C. Arya;N. Buenfeld;J. Newman
中科院分区：
文献类型：
--
作者：
C. Arya;N. Buenfeld;J. Newman
采用孔隙压力机对水泥净浆试件的孔隙溶液进行分析，研究了氯离子在混凝土中的结合。对于在混合时引入的氯化物，水泥类型，水泥替代材料的类型和比例，氯盐和总氯化物含量被认为是控制结合的最重要因素。结合力也随着水灰比、养护温度和龄期的增加而增加。类似的，虽然不太明显，观察到的趋势时，氯化物引入外部浸泡硬化，但相对不成熟，水泥浆薄盘，虽然SRPC给了类似的结果OPC。水/水泥比和固化时间浸泡前的影响不大，但结合的水平随着暴露时间和氯化物浓度的外部解决方案。氯化钙溶液，特别是氯化镁，产生的结合水平远远高于氯化钠。
Chloride binding in concrete has been investigated by analysing pore solution expressed from cement paste specimens using a pore press. For chlorides introduced at the time of mixing, cement type, the type and proportion of cement replacement material, the chloride salt and total chloride content were found to be the most important factors governing binding. Binding also increased with increases in water/cement ratio, curing temperature and age. Similar, though less pronounced, trends were observed when chlorides were introduced externally by immersing thin discs of hardened, but relatively immature, cement paste, although SRPC gave similar results to OPC. Water/cement ratio and curing time prior to immersion had little effect, but the level of binding increased with exposure time and chloride concentration of the external solution. Solutions of calcium chloride, and particularly magnesium chloride, produced far higher levels of binding than sodium chloride.