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無熟料水泥是一种用含活性硅酸的原料和生石灰、石膏按照一定比例配合、磨制成功的新产品,一般都具有和普通硅酸鹽水泥(即熟料水泥)相似的性能。它所以叫做无熟料水泥,是因为在生产过程中,原料不需要經过煆烧。因此,它是一种制作簡單、价格低廉的建筑材料,也有人称它是水泥代用品。 1956年,中国科学院土木建筑研究所試制成功了一种石灰頁岩無熟料水泥。这种水泥是用撫順的赤頁岩(65～70％)、石灰(30～25％)和石膏(5％)配制的。它的和易性好,耐蝕性高。用这种水泥拌制的砂漿試件,在水中经过六个月(这个过程叫“养生”)强度能够增長到每平方厘米400千克以上(28天的强度是每平方厘米200
The clinker-free cement is a new product that has been successfully blended with milled lime and gypsum and contains active silicic acid in a certain proportion, and generally has similar properties as ordinary portland cement (ie, clinker cement). It is called clinker-free cement because the raw material does not need to be burnt in the production process. Therefore, it is a kind of construction material that is simple to make and inexpensive, and some people call it a cement substitute. In 1956, the Institute of Civil Engineering and Architecture of the Chinese Academy of Sciences successfully produced a limestone shale clinker-free cement. This cement was formulated with Fushun’s red shale (65-70%), lime (30-25%) and gypsum (5%). It has good workability and high corrosion resistance. The strength of mortar specimens mixed with this cement after being used in water for six months (this process is called “preserving health”) can be increased to more than 400 kg/cm2 (28 days per square centimeter)