The Clay-tolerance of Amide-modified Polycarboxylate Superplasticizer and Its Performance with Clay-Bearing Aggregates
The Clay-tolerance of Amide-modified Polycarboxylate Superplasticizer and Its Performance with Clay-Bearing Aggregates
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DOI：
10.2991/mebe-15.2015.57
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发表时间：
2015-04
期刊：
影响因子：
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通讯作者：
Chong Sun;Hui Zhou;Xing Li;Sha-fei Wang;J. Xing
中科院分区：
文献类型：
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作者：
Chong Sun;Hui Zhou;Xing Li;Sha-fei Wang;J. Xing
聚酰胺改性聚羧酸酯高效减水剂（PCE）由于其独特的分子结构，与传统的聚羧酸酯高效减水剂相比，显示出许多优点。在本研究中，我们将蒙脱土、高岭石和白云母三种粘土引入水泥中，比较了它们对常规PCE和酰胺改性PCE分散能力的影响。研究发现，三种粘土对常规PCE的影响均为负，尤其是蒙脱土对酰胺改性PCE的影响较小。混凝土应用性能表明，酰胺改性PCE在使用含粘土骨料时比常规PCE具有更强的鲁棒性。
Amide-modified polycarboxylate superplasticizer (PCE) has shown many advantages compared with conventional polycarboxylate superplasticizer due to its unique molecular structure. In this study, we introduced three types of clay, montmorillonite, kaolinite and muscovite into cement and their influence on the dispersion ability of conventional PCE and amide-modified PCE was compared. It was found that conventional PCE is negatively affected by all three types of clay especially for montmorillonite where as amide-modified PCE was less affected. The concrete application performance showed that amide-modified PCE was more robust than conventional PCE when clay-bearing aggregate was utilized.