抄録
The cold weather concreting recommandation for practice of AIJ is utilized by many practical persons. However, about mixing plan or curing plan, estrangement from the field results data was pointed out, and so I carried out a survey for the purpose of grasping the actual situation. In addition, as for the compounding plan technique, it turned out that in Hokkaido region they had much adoption of standard curves of sixth document in the recommendation for practice. When I compared this standard curve with the field results data and the laboratory data, I pound the estrangement at early age was wide, so it is necessary to review this curve.
