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我国行业标准《建筑工程冬期施工规程》(JGJ104—1997)规定,根据当地多年气象资料统计,当室外日平均气温连续5d稳定低于5℃即进入冬期施工,而采用在混凝土拌合物中掺入不同种类的外加剂,是冬期施工时普遍应用的方法之一。一、应用外加剂的目的1.提高混凝土早期强度,加快施工进度混凝土强度的发展与其温度的高低密
According to the statistics of many years of meteorological data in the local area, when the outdoor daily average temperature is stable below 5 ℃ for 5 days in a row, it will enter the winter construction, but in the concrete mixture, it will be used in the winter construction schedule (JGJ104-1997) Into different types of additives, is one of the methods commonly used in winter construction. First, the purpose of the application of additives 1. To improve the early strength of concrete, speed up the construction progress Concrete strength and the development of high and low temperature