An at least two-component mortar composition is described, which can be
cured by thermal initiation and contains at least one polymerizable
monomer and/or at least one curable resin, at least one polymerization
initiator for the polymerizable monomer and/or the curable resin and
optionally at least one filler, wherein, as polymerization initiator, at
least one organically substituted ammonium salt is contained as
constituent of a mortar component and at least one inorganic persulfate is
contained as constituent of a further mortar component, and which, after
the mortar components are mixed in situ, results in an organically
substituted ammonium persulfate, the nature and amount of organically
substituted ammonium salt and inorganic persulfate as well as of
polymerizable monomer or curable resin being selected so that a mortar
composition results, which can be polymerized by free radical
polymerization due to the action of heat, as well as a method for
fastening tie rods, reinforcing steel for concrete or the like in the
solid substrates using this mortar composition.
