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在齐齐哈尔市建筑公司指导下,我厂于1979年12月开始生产T-40℃钢筋混凝土低温附加剂。该产品呈白色粉末状,易溶于水,有效成分为97％以上,适用于不低于零下40℃冷作钢筋混凝土工程。使用本产品的冷作混凝土,在负温下三个月可达到设计强度。 1.低温附加剂的加入量根据七天自然气温平均温度,按下表的数量加入(以混凝土拌合水重量的百分比计)。
Under the guidance of Qiqihar Construction Company, our factory began production of T-40°C reinforced concrete low-temperature additive in December 1979. The product is white powder, soluble in water, and its active ingredient is more than 97%. It is suitable for cold working reinforced concrete projects of no less than minus 40°C. Using this product’s cold-formed concrete, the design strength can be achieved at a negative temperature for three months. 1. The addition amount of low-temperature additive is based on the average temperature of the natural temperature for seven days, and is added in the following table (as a percentage of the weight of the concrete mixing water).