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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