At present, concrete superplasticizer is mainly composed of polycarboxylic acid and naphthalene. Polycarboxylate superplasticizer (PCES) is too sensitive to soil in the application process, and its function decreases sharply. However, naphthalene series water reducer has good mud resistance, which is an important reason why naphthalene water reducer has always been dominant in commercial concrete with high sand and Stone mud content.

　　要在商砼范畴大规模推行聚羧酸减水剂，增强其抗泥性是关键所在。运用紫外可见吸收光谱分析手法，研讨泥土对不同结构的聚羧酸减水剂的吸附规则，而且研讨了聚羧酸减水剂对不同含泥量砂浆的涣散功能，试验发现水泥浆明显提升了泥土对聚羧酸减水剂的饱满吸附量。

　　In order to carry out polycarboxylate superplasticizer on a large scale in commercial concrete, the key is to enhance its mud resistance. The absorption rules of soil to polycarboxylate superplasticizer with different structures were studied by means of ultraviolet visible absorption spectrum analysis. The laxity function of polycarboxylate superplasticizer to mortar with different mud content was discussed. The test showed that the cement slurry significantly increased the full adsorption capacity of soil to polycarboxylate superplasticizer.
                  

　　并开始发现短主链、短侧链的聚羧酸减水剂抗泥作用相对较好。聚羧酸减水剂（PCEs）在进入商砼范畴遇到的最大问题便是其对砂石含泥量过于灵敏的问题，相对而言，萘系减水剂能习惯高含泥的混凝土，这也是萘系减水剂一向占有商砼商场的重要原因。            

　　It is found that the short main chain and short side chain polycarboxylate superplasticizer has better anti mud effect. The biggest problem of polycarboxylate superplasticizer (PCES) in commercial concrete is that it is too sensitive to the content of sand and gravel. Relatively speaking, naphthalene water reducer can be used to concrete with high mud content, which is also an important reason why naphthalene water reducer has always occupied commercial concrete market.

　　为更好地在商砼范畴推行聚羧酸减水剂，业界技术人员近几年加大了泥土对聚羧酸减水剂功能影响的研讨。砂石含泥量小于必定值（3百分之）时，泥土对运用聚羧酸的混凝土流变性及后期强度影响不大，而一旦超越必定量（5百分之），将明显影响混凝土的流变性及硬化后的强度和耐久性。

　　In order to better promote polycarboxylate superplasticizer in commercial concrete field, technical personnel in the industry have increased the research on the influence of soil on the function of polycarboxylate superplasticizer in recent years. When the content of sand and gravel is less than a certain value (3%), the soil has little effect on the rheological property and later strength of concrete using polycarboxylic acid, but once it exceeds the required amount (5%), it will obviously affect the rheological property and strength and durability of concrete after hardening.

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