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<doi>/ISEC.res.2017.101</doi>
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<article-title>MULTI-FUNCTIONAL CEMENTITIOUS<br/>
COMPOSITES WITH SENSING AND HEALING<br/>
CAPABILITIES</article-title>
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<author>HOCINE SIAD<sup>1</sup>, MOHAMED LACHEMI<sup>1</sup>, MUSTAFA SAHMARAN<sup>2</sup>,<br/>
and ANWAR HOSSAIN<sup>1</sup></author>

<aff><sup>1</sup>
Dept of Civil Engineering, Ryerson University, Toronto, Canada<br/>
<sup>2</sup>
Dept of Civil Engineering, Gazi University, Ankara, Turkey</aff>


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<title>ABSTRACT</title>
<p>For smart concretes to be developed, it must be gathering high mechanical and
durability properties, in addition to satisfying special characteristics such as self-
monitoring of damage. This study outlines attempts to develop advanced Engineered
Cementitious Composites (ECC) with combined self-sensing and self-healing
capabilities. The aim is to maintain or improve the high mechanical and ductility
properties of ECC, while enhancing the self-monitoring and self-healing capabilities.
To assure the self-sensing functionality, carbon-based materials with different volumes
were incorporated in ECC formulations. The self-healing rates of control and
piezoresistive ECC’s were assessed by pre-cracking specimens up to 60% of their
original flexure deformations and left those samples to heal under moist curing. The
mechanical performances and ductility were evaluated based on compressive and
flexural strengths, and mid-span beam deflection capacity measurements. The self-
healing/self-sensing efficiency was tested by assessing the electrical resistivity (ER)
variations of cylindrical specimens. Mechanical results of carbon-based ECC mixtures
showed better or comparable performances than the corresponding control ECC. This
study also reveals that the type of carbon-based materials and moisture state of
specimens considerably influence the self-sensing/self-healing ability of ECC mixtures.</p>
<p><italic>Keywords: </italic>Smart concrete, Carbon fiber, Nano-tubes, Ductility, Pre-cracking.</p>
</abstract>
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