Comparative study between structural and electrical properties of geopolymers applied to a green concrete

A. M. Montaño, C. P. González, J. Pérez, C. Royero, D. Sandoval, J. Gutiérrez

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    1 Scopus citations


    This work shows a comparative analysis of geopolymers obtained by alkaline activation of two aluminosilicates: bentonite and metakaolin. With the goal of to replace some cement percentage, both aluminosilicates were added in several proportions (10, 20 and 30%) to concrete mixes. Portland Type I cement was used to prepare the reference concrete (without geopolymer). X-ray diffraction of geopolymers allowed to find new crystallographic phases that was not present in precursor's minerals. To evaluate mechanical properties of concrete prepared with geopolymers, test tubes with 7, 14, 28 and 90 days as setting time were used. Chemical resistance and Electrical impedance of concrete mixes were also measured. Results shows that cementitious material obtained from metakaolin exhibit the best compressive strength. On the other hand, those materials derived from bentonite, have a high electrical resistance so that, they protected reinforced concrete better that Portland does.

    Original languageEnglish
    Article number012013
    JournalJournal of Physics: Conference Series
    Issue number1
    StatePublished - 2013
    Event2nd International Meeting for Researchers in Materials and Plasma Technology, IMRMPT 2013 - Bucaramanga, Colombia
    Duration: 27 Feb 20132 Mar 2013


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