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

doi:10.1007/s12204-012-1322-9

Abstract

Abstract: 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.

Key words: nano-material| polymer| concrete| polycarboxylate| slump-retaining admixture

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.

关键词: nano-material| polymer| concrete| polycarboxylate| slump-retaining admixture

CLC Number:

TB 324

DUAN Guo-rong1,2* (段国荣), HUANG Guo-hong1,2 (黄国泓), LI Ai-mei2 (李爱梅), ZHU Ye-ran (朱烨然), GONG Ying1,2 (龚英). Preparation and Characterization of a New Kind of Nano-rod Shaped Polycarboxylate Slump-Retaining Admixture Using for Concrete[J]. Journal of shanghai Jiaotong University (Science), 2012, 17(5): 541-544.

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

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

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