Carbon nanotube (CNT) reinforced cementitious composites using carboxymethyl cellulose (CMC) treatment for enhanced dispersion, mechanical, and piezoresistive properties

被引：8
|
作者：
Chia, Leonard [1 ,2 ]
Huang, Ying [1 ]
Xia, Wenjie [1 ]
Lu, Pan [2 ]
Zhang, Dawei [1 ,3 ]
机构：
[1] North Dakota State Univ, Dept Civil Construct & Environm Engn, Fargo, ND 58108 USA
[2] North Dakota State Univ, Upper Great Plains Transportat Inst, Fargo, ND 58108 USA
[3] North Dakota State Univ, CIE204,1340 Adm Ave, Fargo, ND 58108 USA
来源：
CONSTRUCTION AND BUILDING MATERIALS | 2023年 / 377卷
基金：
美国国家科学基金会;
关键词：
Carbon nanotubes; Cementitious composites; Carboxymethyl cellulose; Noncovalent functionalization; Dispersion; Mechanical properties; Piezoresistive sensitivity; CONCRETE; SURFACTANTS; STRENGTH; TEMPERATURE; FIBERS; ROPES;
D O I：
10.1016/j.conbuildmat.2023.131104
中图分类号：
TU [建筑科学];
学科分类号：
0813 ;
摘要：
Controlling CNT dispersion has been the key challenge for CNT nanocomposites. This study investigated the dispersion, mechanical and piezoresistive properties of CNT reinforced cementitious composites using carbox-ymethyl cellulose (CMC) treatment by comparing with three other existing mixing methods, including direct mixing, surface treatments using octenyl succinic anhydride (OSA) modified tapioca starch as a polymeric ad-ditive, and sodium dodecylbenzene sulfonate (NaDDBS) as a surfactant. The experimental results first indicated that the CMC treatment was categorized as a noncovalent functionalization and showed effectiveness in improving CNT dispersion, compressive strength, modulus of elasticity, Poisson ratio, and piezoresistive sensi-tivity of CNT reinforced cementitious composites.
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页数：9
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