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一、前言1938年 R.Tucker 提出掺用萘磺酸甲醛缩合物不仅可减少混凝土用水量,并可增加混凝土强度;但由于成本高、性能不够理想,未能在工程上得到广泛应用。1963年日本研制成功 β-萘磺酸盐甲醛高缩合物,开始了超塑化剂在工程上的应用;1968年西德研制成功密胺磺酸盐甲醛缩合物,使西欧等国广泛地用它制造流动混凝土等。
I. INTRODUCTION In 1938, R. Tucker suggested that the addition of naphthalenesulfonic acid-formaldehyde condensate could not only reduce the water consumption of concrete, but also increase the strength of concrete. However, due to its high cost and unsatisfactory performance, it has not been widely used in engineering. In 1963, Japan successfully developed β-naphthalenesulfonate formaldehyde high condensate, and started the application of superplasticizers in engineering; in 1968, the successful development of melamine sulphonate formaldehyde condensate in Western Germany made it widely used in Western Europe and other countries. It manufactures flowing concrete and so on.