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Home > Publications > International Concrete Abstracts Portal
The International Concrete Abstracts Portal is an ACI led collaboration with leading technical organizations from within the international concrete industry and offers the most comprehensive collection of published concrete abstracts.
Title: Toughening of Cement Composites with Wollastonite Micro-Fibers
Author(s): Vikram Dey, Amir Bonakdar, Mehdi Bakhshi and Barzin Mobasher
Publication: Special Publication
Appears on pages(s): 10.1-10.16
Keywords: wollastonite, fracture, shrinkage, digital image correlation, fibers, crack width
Abstract:Wollastonite, a calcium meta-silicate mineral with acicular microstructure can be used in cementbased
materials for micro-reinforcing the brittle matrix. Contribution of wollastonite particles in
toughening and crack mitigation of cement mortar systems in its early age and hardened state, were
studied. Elaborate testing was conducted to quantify the ability of wollastonite to restrain early age
plastic shrinkage cracking, and fracture toughness of hardened cement mortar materials. Microstructural
investigations on these blended systems validated the contribution of these wollastonite
particles in the enhancement of mechanical properties through classical toughening mechanisms
such as crack bridging, fiber pullout and rupture.
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