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  • Hybrid organic-inorganic admixtures for cement based materials
    Švegl, Franc ...
    A new type of admixtures for cement-based materials presented in this work is based on silane-modified acrlic polymers prepared by emulsion polymerization of acrylic monomers and organofunctional ... silane precursor. The acrlyic polymer chain was functionalized with organofunctional silane molecules to build an organic0inorganic polymer structure with terminal siloxane groups. The advantage of this type of polymers over already known polymer modifiers for concrete and mortars is the ability to act as a coupling agent between different phases in the cementitious system. The presence of siloxane groups enables strong chemical interaction among mineral phases of inorganic matrix (cement, aggregate) and direct chemical bonding of organic polymer chain to inorganic phases of the cement based material. The influence of silane-modified acrylic latex admixture on the properties of cement paste and mortar was evaluated and compared to unmodified acrylic latex. Mortars modified with this type of hybrid inorganic-organic polmers showed improved physical-mechanical properties like higher mechanical strength, better adhesion to the substrate, lower shrinkage, better thermal conduction and better resistance to different sources of corrosion.
    Vir: Eighth CANMET/ACI International Conference on Recent Advances in Concrete Technology : [Montréal, Canada, 2006] (Str. 163-176)
    Vrsta gradiva - prispevek na konferenci
    Leto - 2006
    Jezik - angleški
    COBISS.SI-ID - 1171559

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