Effect of adding carbon nanotubes on the thermal conductivity of steel fiber-reinforced concrete

被引：55

作者：

Hassanzadeh-Aghdam, Mohammad Kazem ^{[1
]}

Mahmoodi, Mohammad Javad ^{[1
]}

Safi, Mohammad ^{[1
]}

机构：

[1] Shahid Beheshti Univ, Fac Civil Water & Environm Engn, Tehran, Iran

来源：

COMPOSITES PART B-ENGINEERING | 2019年 / 174卷

关键词：

Concrete; Steel fiber; Carbon nanotube; Thermal conductivity; Micromechanics; MECHANICAL-PROPERTIES; COMPOSITES; NANOCOMPOSITES; PERFORMANCE; MULTISCALE; STRENGTH; BEHAVIOR; MODEL; PREDICTION; DISPERSION;

D O I：

10.1016/j.compositesb.2019.106972

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

A comprehensive analysis is performed to study the effect of adding carbon nanotubes (CNTs) on the thermal conductivity of short steel fiber (SSF)-reinforced concrete. The role of the CNT dispersion and the CNT/concrete interfacial thermal resistance in the SSF/CNT-reinforced concrete thermal conducting behavior is investigated. A good agreement is observed between the model predictions and available experiment. Also, the influences of the SSF aspect ratio, volume fraction and placement type; and the CNT volume fraction, length, diameter and directional behavior on the concrete thermal conductivities are examined. The results reveal that if the CNTs to be uniformly distributed, and the CNT/concrete interface bonding to be perfect, then the concrete effective thermal conductivity is significantly improved. The increasing both volume fraction and length of the CNT leads to the concrete thermal conductivity enhancement too. The CNT diameter and transverse thermal conductivity cannot affect the SSF/CNT-reinforced concrete thermal conducting behavior as well.

引用

页数：12

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