Preparation and Characterization of a New Kind of Nano-rod Shaped Polycarboxylate Slump-Retaining Admixture Using for Concrete  

作　　者：段国荣 黄国泓 李爱梅 祝烨然 龚英 

机构地区：[1]Research Center on New Materials in Hydraulic Structures of Ministry of Water Resources,Nanjing Hydraulic Research Institute [2]Nanjing R&D High Technology Co.Ltd.

出　　处：《Journal of Shanghai Jiaotong university(Science)》2012年第5期541-544,共4页上海交通大学学报（英文版）

基　　金：the Jiangsu Province Natural Science Foundation(No.BK2008520);the Jiangsu Postdoctoral Research Funds(No.0901008C);the China Postdoctoral Science Foundation(No.20090461120)

摘　　要：A new kind of nano-rod shaped polycarboxylic acid slump-retaining agent was synthesized.Transmission electron microscope(TEM) experiment showed that the nano-rod was bound together as macromolecular aggregates in solution.Application performance studying suggested that this kind nano-sized polymer material had excellently plasticity-retaining performance in cement-based materials and could improve endurance performance of hardened cement-based materials distinctly.The concrete with an initial slump of 2-9 cm could achieve 3 h plasticity-retaining performance with the help of this kind nano-rod.The product had extremely wide application value in the market.A new kind of nano-rod shaped polycarboxylic acid slump-retaining agent was synthesized. Trans- mission electron microscope （TEM） experiment showed that the nano-rod was bound together as macromolecular aggregates in solution. Application performance studying suggested that this kind nano-sized polymer material had excellently plasticity-retaining performance in cement-based materials and could improve endurance perfor- mance of hardened cement-based materials distinctly. The concrete with an initial slump of 2--9 cm could achieve 3 h plasticity-retaining performance with the help of this kind nano-rod. The product had extremely wide appli- cation value in the market.

关 键 词：nano-material polymer CONCRETE POLYCARBOXYLATE slump-retaining admixture 

分 类 号：TB324[一般工业技术—材料科学与工程]