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    STUDIA CHEMIA - Issue no. 1 / 2014  

Authors:  .
  Abstract:   The present paper presents the research results about the organic and inorganic additions influence, in different percentages in the lab-processed cement concretes, on their mechanical strengths. The cement CEM I 52.5 was used as mineral binder, an epoxy resin was used as polymer and silica fume (SF) as addition. Experiments were performed regarding on availability of the complex binder (organic-inorganic) - water system, in order to assess its ability to develop resistant strengthened structures. These are exemplified by the compression and tensile strengths of obtained concretes, by the developed forces (F) in avulsion tests of the concrete reinforcement, as well as the organic solvent extractions (toluene and ethanol) of polymer from the strengthened cement matrix. It was highlighted the positive role of additions in preparation of those concretes.

Keywords: concrete, polymers, hydraulically active additives, mechanical strengths
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