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.

　　要在商砼范疇大規(guī)模推行聚羧酸減水劑，增強其抗泥性是關(guān)鍵所在。運用紫外可見吸收光譜分析手法，研討泥土對不同結(jié)構(gòu)的聚羧酸減水劑的吸附規(guī)則，而且研討了聚羧酸減水劑對不同含泥量砂漿的渙散功能，試驗發(fā)現(xiàn)水泥漿明顯提升了泥土對聚羧酸減水劑的飽滿吸附量。

　　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.
                  

　　并開始發(fā)現(xiàn)短主鏈、短側(cè)鏈的聚羧酸減水劑抗泥作用相對較好。聚羧酸減水劑（PCEs）在進入商砼范疇遇到的最大問題便是其對砂石含泥量過于靈敏的問題，相對而言，萘系減水劑能習慣高含泥的混凝土，這也是萘系減水劑一向占有商砼商場的重要原因。            

　　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.

　　為更好地在商砼范疇推行聚羧酸減水劑，業(yè)界技術(shù)人員近幾年加大了泥土對聚羧酸減水劑功能影響的研討。砂石含泥量小于必定值（3百分之）時，泥土對運用聚羧酸的混凝土流變性及后期強度影響不大，而一旦超越必定量（5百分之），將明顯影響混凝土的流變性及硬化后的強度和耐久性。

　　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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