Properties of high yield synthesised carbon nano fibres/Portland cement composite

被引：19

作者：

Cwirzen, A. ^{[1
]}

Habermehl-Cwirzen, K. ^{[1
]}

Shandakov, D. ^{[2
,3
]}

Nasibulina, L. I. ^{[2
,3
]}

Nasibulin, A. G. ^{[2
,3
]}

Mudimela, P. R. ^{[2
,3
]}

Kauppinen, E. I. ^{[2
,3
]}

Penttala, V. ^{[1
]}

机构：

[1] Aalto Univ, Lab Bldg Mat Technol, Fac Engn & Architecture, FIN-02150 Espoo, Finland

[2] Aalto Univ, Phys Lab, FIN-02150 Espoo, Finland

[3] Aalto Univ, Ctr New Mat, FIN-02150 Espoo, Finland

来源：

ADVANCES IN CEMENT RESEARCH | 2009年 / 21卷 / 04期

关键词：

NANOTUBES; DECORATION;

D O I：

10.1680/adcr.8.00021

中图分类号：

TU [建筑科学];

学科分类号：

0813 ;

摘要：

The compressive strength and electrical resistivity of hardened pastes produced either from nanomodified Portland sulfate-resistant cement (CHH) or a mixture of nanomodified and pristine sulfate-resistant cements Were determined. The nanomodification included grow carbon nanotubes (CNTs) and carbon nanofibres (CNFs) on the cement particles. Pastes having a water-to-binder ratio of 0.5 were produced. The test results revealed that partial replacement of sulfate-resistant cement by CHH cement decreased the electrical resistivity of the 28 day old specimens hat worsened the mechanical properties. The lower compressive strength was attributed to a lower, degree of hydration of the CHH cement. The addition of a mixture of surfactants enabled the production of specimens consisting entirely of CHH cement. The hardened material obtained was characterised by a nearly doubled compressive strength in comparison with the reference specimens made from pristine sulfate-resistant cement. This was attributed to a high degree of hydration as well as reinforcing action of the CNTs and CNFs The electrical resistivity was lowered by one order of magnitude classifying this material as a semiconductor.

引用

页码：141 / 146

页数：6

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