Compressive Strength of Cement Mortar Containing Carbon Nanotubes (CNTs) under Sulfate Attack and Dry-wet Cycling Environment

DOI

10.2991/icmea-17.2018.51How to use a DOI?

Keywords

carbon nanotube, compressive strength, cement hydration heat, wet-dry cycle, sulfate erosion

Abstract

The compressive strength and hydration process of cement-based materials containing with carbon nanotubes (CNTs) were investigated in this paper. The experimental results showed that the compressive strength of QC-CNT group under standard curing and dry-wet cycles was higher than that of Control group under different testing ages; The compressive strength under the standard curing was higher than that of the same group under dry-wet cycles; With the increasing of dry-wet cycling age, the compressive strength of Control group and QC-CNT group decreased gradually. Hydration exothermic curve in 72h showed the same trend in Control group and QC-CNT group. Exothermic peaks appear basically the same period .The peak value and the hydration reaction rates in each stage of the QC-CNT group were always higher than those in the Control group. The experimental results show that CNT can significantly improve the sulfate resistance of cement-based materials in two aspects: preventing harmful ions from entering the material and preventing cracking.

Copyright

© 2018, the Authors. Published by Atlantis Press.

Open Access

This is an open access article distributed under the CC BY-NC license (http://creativecommons.org/licenses/by-nc/4.0/).

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TY  - CONF
AU  - Weiwen Li
AU  - Yaru Jia
AU  - Ruoxu Shen
AU  - Feng Xing
AU  - Jing Zheng
PY  - 2018/02
DA  - 2018/02
TI  - Compressive Strength of Cement Mortar Containing Carbon Nanotubes (CNTs) under Sulfate Attack and Dry-wet Cycling Environment
BT  - Proceedings of the 4th Annual International Conference on Material Engineering and Application (ICMEA 2017)
PB  - Atlantis Press
SP  - 219
EP  - 223
SN  - 2352-5401
UR  - https://doi.org/10.2991/icmea-17.2018.51
DO  - 10.2991/icmea-17.2018.51
ID  - Li2018/02
ER  -