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本文简述了三种主要减水剂的发展历史,并对三类减水剂的改性复配做了简要概述。木质素磺酸盐减水性较弱。萘系减水剂虽然减水率较高,但是也存在一些不足之处,比如,合成萘系减水剂的一些原料对环境有一定的污染性,其次萘系减水剂保坍性较差,所以希望通过一些方法来提高萘系减水剂的一些性能。虽然聚羧酸减水剂减水性率高,并且保坍性好,同时也是一种环境友好型减水剂,但也存在一些不足,水泥品种繁多,难免会出现减水剂与水泥掺杂而达不到预期结果的问题,所以常用聚羧酸系减水剂与其他减水剂复配以解决实际生产生活中的一些问题。
This article briefly describes the history of the development of three major water reducing agents and gives a brief overview of the modification and compounding of the three types of water reducing agents. Lignosulphonate is less water-reducing. Although naphthalene superplasticizer has a high water-reducing rate, there are some shortcomings. For example, some raw materials of synthetic naphthalene superplasticizer have some pollution to the environment, and secondly naphthalene superplasticizer has poor slump retention , So I hope some ways to improve some performance naphthalene superplasticizer. Although polycarboxylate superplasticizer has high water-reducing property and good slump retention, it is also an environment-friendly superplasticizer. However, there are some shortcomings. There are many kinds of cement, and it is inevitable that there will be superplasticizer and cement doping Reach the expected results, so commonly used polycarboxylate superplasticizer with other superplasticizer compound to solve some problems in the actual production and life.