| 摘要 |
<p>A method of modifying a binder in order to adapt it to increase the tendency to react with other materials. The binder contains silicon dioxide, which in a known manner is dissolved and reformed during formation of a hardened or polymerized body, i.e. a so-called polymer silicate of the main type which, in principle, includes water glass and quartz (SiO2) in finely divided form, and with addition of an active silicon compound in the form of highly dispersed, finely divided, amorphous/polymer SiO2 prior to hardening or polymerization in a quantity of between 3 and 5 per cent by weight, calculated on the total dry weight of the included substances, as well as a water-absorbing and hardening agent, such as for example sodium hexafluorosilicate. The method according to the invention consists in that prior to or during the whole or part of the hardening of polymerization of the binder, the anion-cation content of the binder and/or the distribution thereof in relation to the material or materials to be bonded by the binder is changed, or conversely the anion-cation content of the material or materials to be bonded by the binder and/or the distribution thereof is changed, or that a combination of these actions is performed. The said anion-cation content is adapted so that essentially no surplus of the said anion-cation content exists after hardening or polymerization.</p> |
