Porosity of porous concrete is an important parameter used for both mechanical properties of pavement and environmental design. Nano-particles have received increasing attention and have been used in various fields such as concrete to develop novel materials with interesting functions, all because of dedicated physical and chemical properties of nanoparticles. The authors describe new findings of an experimental work on mechanical properties and permeability of porous concrete containing nano-silicon dioxide. Plain porous concrete and porous concrete containing micro-silicon dioxide have been studied as control materials. Twenty-eight-day results showed higher compressive and flexural strengths for porous concrete containing nano-silicon dioxide compared with those of plain porous concrete with the same water–cement ratio. It was demonstrated that nano-silicon dioxide was more effective than micro-silicon dioxide in enhancing porous concrete flexural strength. Samples with 5% nano-silicon dioxide by weight of binder presented the highest mechanical properties, in which the flexural and compressive strength of porous concrete were enhanced by 56% and 48%, respectively. From experimental study of the permeability behavior of porous concrete containing nano- and micro-silicon dioxide, it appeared that nano-silicon dioxide and micro-silicon dioxide could both reduce water penetration through porous concrete; however, micro-silicon dioxide was found more effective for equal nanoparticles and material voids.


    Access

    Download

    Check availability in my library

    Order at Subito €


    Export, share and cite



    Title :

    Experimental Study on Permeability and Mechanical Properties of Nanomodified Porous Concrete


    Additional title:

    Transportation Research Record: Journal of the Transportation Research Board


    Contributors:


    Publication date :

    2011-01-01




    Type of media :

    Article (Journal)


    Type of material :

    Electronic Resource


    Language :

    English




    Crystallization of nanomodified metal drop after collision and spreading over a porous substrate

    Cherepanov, A. / Cherepanova, V. | American Institute of Physics | 2021

    Free access


    The dynamics of dissolution of titanium carbide in nanomodified titanium melt

    Cherepanov, A. N. / Shmagunov, O. A. | American Institute of Physics | 2021

    Free access