Effect of CNT addition and dispersive agents on the transport properties and microstructure of cement mortars

被引：33
作者：
Alafogianni, P. [1 ]
Dassios, K. [1 ]
Tsakiroglou, C. D. [2 ]
Matikas, T. E. [1 ]
Barkoula, N. M. [1 ]
机构：
[1] Univ Ioannina, Dept Mat Sci & Engn, Ioannina 45110, Greece
[2] Fdn Res & Technol Hellas, Inst Chem Engn Sci, Stadiou St, Patras 26504, Greece
来源：
CONSTRUCTION AND BUILDING MATERIALS | 2019年 / 197卷
关键词：
CNTs; Mortars; Transport properties; Dispersive agent; Microstructure; Pore size distribution; Durability; WALLED CARBON NANOTUBES; SURFACTANT-ASSISTED DISPERSION; MERCURY INTRUSION POROSIMETRY; PORE STRUCTURE; REINFORCED CEMENT; MECHANICAL-PROPERTIES; GAS-PERMEABILITY; ABSORPTION CHARACTERISTICS; CONCRETE; DURABILITY;
D O I：
10.1016/j.conbuildmat.2018.11.169
中图分类号：
TU [建筑科学];
学科分类号：
0813 ;
摘要：
The current study investigates the dependence of transport properties of carbon nanotube (CNT)-modified mortars on tube content, type of dispersive agent and microstructure. CNT addition was found to result in up to 50% reduction of sorptivity, due to the refinement of pores in the mortars. No relation was found between water absorption at equilibrium, chloride diffusion and gas permeability coefficient with CNT content, dispersive agent type and microstructural parameters. The behavior was linked with the presence of high amount of dispersive agents which, not only control the level of compaction, but also chemically interact with water or methanol altering transport. (C) 2018 Elsevier Ltd. All rights reserved.
引用
收藏
页码：251 / 261
页数：11
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