Abstract
This study investigates the implications of carbon nanomaterial type and amount on the electrical properties of cement paste. For this, five different nanomaterials, i.e., carbon nanotube (CNT), carbon fiber (CF), graphite nanofiber (GNF), graphene (G), and graphene oxide (GO), and two different volume fractions of 0.5 and 1% were considered. In addition, the self-sensing capacity of the cement composites with nanomaterials was evaluated under cyclic compressive loads. Test results indicate that the conductivity of plain cement paste was improved by adding carbon nanomaterials. In most cases, the conductivity of the composites was reduced by an increase in curing age and a decrease in nanomaterial amount, except for CF. The composites with CNTs exhibited the best self-sensing capacity regardless of volume fraction (vf), and the order of self-sensing capacity of the composites at a vf of 1% was CNT > GO ≈ GNF > G. The composites with 0.5 and 1 vol% CFs were determined to be not appropriate for a sensor measuring compressive behaviors. The gauge factor of the composites incorporating 1 vol% CNTs was obtained as 77.2–95.5.
| Original language | English |
|---|---|
| Pages (from-to) | 750-761 |
| Number of pages | 12 |
| Journal | Measurement: Journal of the International Measurement Confederation |
| Volume | 134 |
| DOIs | |
| Publication status | Published - 2019 Feb 1 |
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Keywords
- Carbon nanomaterials
- Cement composites
- Electrical resistivity
- Gauge factor
- Self-sensing capacity
ASJC Scopus subject areas
- Instrumentation
- Electrical and Electronic Engineering
Cite this
Effects of carbon nanomaterial type and amount on self-sensing capacity of cement paste. / Yoo, Doo Yeol; You, Ilhwan; Zi, Goangseup; Lee, Seung Jung.
In: Measurement: Journal of the International Measurement Confederation, Vol. 134, 01.02.2019, p. 750-761.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Effects of carbon nanomaterial type and amount on self-sensing capacity of cement paste
AU - Yoo, Doo Yeol
AU - You, Ilhwan
AU - Zi, Goangseup
AU - Lee, Seung Jung
PY - 2019/2/1
Y1 - 2019/2/1
N2 - This study investigates the implications of carbon nanomaterial type and amount on the electrical properties of cement paste. For this, five different nanomaterials, i.e., carbon nanotube (CNT), carbon fiber (CF), graphite nanofiber (GNF), graphene (G), and graphene oxide (GO), and two different volume fractions of 0.5 and 1% were considered. In addition, the self-sensing capacity of the cement composites with nanomaterials was evaluated under cyclic compressive loads. Test results indicate that the conductivity of plain cement paste was improved by adding carbon nanomaterials. In most cases, the conductivity of the composites was reduced by an increase in curing age and a decrease in nanomaterial amount, except for CF. The composites with CNTs exhibited the best self-sensing capacity regardless of volume fraction (vf), and the order of self-sensing capacity of the composites at a vf of 1% was CNT > GO ≈ GNF > G. The composites with 0.5 and 1 vol% CFs were determined to be not appropriate for a sensor measuring compressive behaviors. The gauge factor of the composites incorporating 1 vol% CNTs was obtained as 77.2–95.5.
AB - This study investigates the implications of carbon nanomaterial type and amount on the electrical properties of cement paste. For this, five different nanomaterials, i.e., carbon nanotube (CNT), carbon fiber (CF), graphite nanofiber (GNF), graphene (G), and graphene oxide (GO), and two different volume fractions of 0.5 and 1% were considered. In addition, the self-sensing capacity of the cement composites with nanomaterials was evaluated under cyclic compressive loads. Test results indicate that the conductivity of plain cement paste was improved by adding carbon nanomaterials. In most cases, the conductivity of the composites was reduced by an increase in curing age and a decrease in nanomaterial amount, except for CF. The composites with CNTs exhibited the best self-sensing capacity regardless of volume fraction (vf), and the order of self-sensing capacity of the composites at a vf of 1% was CNT > GO ≈ GNF > G. The composites with 0.5 and 1 vol% CFs were determined to be not appropriate for a sensor measuring compressive behaviors. The gauge factor of the composites incorporating 1 vol% CNTs was obtained as 77.2–95.5.
KW - Carbon nanomaterials
KW - Cement composites
KW - Electrical resistivity
KW - Gauge factor
KW - Self-sensing capacity
UR - http://www.scopus.com/inward/record.url?scp=85056624194&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=85056624194&partnerID=8YFLogxK
U2 - 10.1016/j.measurement.2018.11.024
DO - 10.1016/j.measurement.2018.11.024
M3 - Article
VL - 134
SP - 750
EP - 761
JO - Measurement
JF - Measurement
SN - 1536-6367
ER -