Buy article PDF
The purchased file will be sent to you
via email after the payment is completed.
US$ 35
|
Computers and Concrete Volume 8, Number 2, April 2011 , pages 229-241 DOI: https://doi.org/10.12989/cac.2011.8.2.229 |
|
|
|
Variables affecting strain sensing function in cementitious composites with carbon fibers |
||
F.J. Baeza, E. Zornoza, L.G. Andion, S. Ivorra and P. Garces
|
||
| Abstract | ||
| In this work, cement paste samples with 1% (by cement mass) of a conductive carbon fiber admixture have been studied under uniaxial compression. Three different arrangements were used to measure the resistivity of the samples. According to the results obtained, the resistance should be measured using the four wire method in order to obtain good sensitivity and repeatability. The effect of the load value and the load rate on the fractional change of the volume resistivity has been determined. It has been observed that the gage factor (fractional change in resistance respect to strain) increases when the maximum load is increased, and the loading rate does not affect significantly this parameter. The effect of the sample ambient humidity on the material piezoresistivity has also been studied, showing that the response of the composite is highly affected by this parameter. | ||
| Key Words | ||
| carbon fiber; cement; piezoresistivity; sensor; strain; stress. | ||
| Address | ||
| F.J. Baeza, E. Zornoza, L.G. Andion, S. Ivorra and P. Garces: Dpto. de Ingenieria de la Construccion, Universidad de Alicante, Spain | ||