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本刊1964年第5期《测定水泥强度的一种新方法》一文发表后,有许多讀者来信提出一些問題,現簡要答复于后。1.关于α系数:α系数表示水灰比为80/6时,水泥水化5分钟的碱度,亦即說明水泥中游离石灰和碱含量的多少。求出α系数主要为求β系数时便于加入与α系数相当的HCl量,从而消除水泥中游离石灰和碱含量对測定水泥强度的影响,因为水泥水化时游离石灰和碱很快水化。2.关于K的意义:K——酸的系数,即1ml0.1NHCl所相当的碱度,也就是1ml0.1NHCl相当于1升水泥悬浮液中含有多少克CaO。求α系数和β系
After the article “A New Method for Determining Cement Strength” published in the 5th issue of 1964 of the journal, many readers wrote letters to ask questions, which are briefly answered later. 1. On the α coefficient: α coefficient means that the water cement ratio of 80/6, cement hydration 5 minutes alkalinity, which means that the free lime and alkali content in the cement. Calculating the α coefficient is mainly to find the β coefficient, it is convenient to add the amount of HCl equivalent to the α coefficient, so as to eliminate the effect of the content of free lime and alkali in the cement on the determination of the strength of the cement, because the free lime and alkali quickly hydrate when the cement hydrates. 2. Regarding the meaning of K: K—The coefficient of acid, ie, the equivalent alkalinity of 1 ml of 0.1N HCl, that is, 1 ml of 0.1N HCl corresponds to the number of grams of CaO contained in 1 litre of cement suspension. Finding α coefficient and β system