On the possibility of following the hydration of flyash microsilica and fine aggregates by means of chemical shrinkage
On the possibility of following the hydration of flyash microsilica and fine aggregates by means of chemical shrinkage
复制标题
探讨通过化学收缩实现粉煤灰微硅粉和细骨料水化的可能性
DOI：
10.1016/0008-8846(85)90074-2
复制
发表时间：
1985
期刊：
影响因子：
--
通讯作者：
T. Knudsen
中科院分区：
文献类型：
--
作者：
T. Knudsen
细集料的碱反应研究迄今为止都是在由砂和10摩尔氢氧化钠组成的纯体系中进行的。尽管砂的总收缩远小于lml/100 g，但通过仅增加样品尺寸来增加”信号”是简单的。迄今为止，已对4个丹麦砂进行了研究，从无害到高活性。与传统的试验方法的结果相比，给出了一个非常有希望的相关性。粉煤灰的水化实验，依靠化学收缩法，已经在这里和奥尔堡波特兰实验室进行。他们使用一种叫做Konometer的仪器，这种仪器现在在丹麦已经有售。Konometer同时测量6个水化样品的化学收缩，并通过6通道示波器产生连续的水化曲线。
Studies of alkali-reaction of fine aggregate have so far been carried out in pure systems consisting of sand and lO molar sodium hydroxide. Although total shrinkage for sands is much less than 1 ml/lOOg it is simple to increase the" signal" by just increasing the sample size. 4 danish sands have been investigated so far, ranching from innoceous to highly reactive. Comparison to the result of the traditional methods of test gives a very promissing correlation.Hydration experiments with flyash, leaning on the chemical shrinkage method, have been performed here and at Aalborg Portlands laboratories. They use an apparatus, called a Konometer, which is now commercially available in Denmark. The Konometer measures the chemical shrinkage of 6 hydrating samples simultaneously, and produces continuous hydration curves by means of a 6-channel plotter.