Geopolymers are alternative aluminosilicates binders prepared from metakaolin and alkaline silicate solutions. However, the origin of their setting through a massive polycondensation of aluminosilicates remains unclear. The influence of hydroxide ions and of the stoichiometry Si-Al-alkali in solution has to be clarified. But these species are also implicated in the dissolution of metakaolin. First, interactions between hydroxides and silicates in the activating solution were expressed by means of the Hammett function H- to quantify free hydroxides, and of the buffering capacity β to quantify hydroxide bonded to silicates. Then the dissolution was dissociated from the polycondensation by progressively diluting the metakaolin mixed with the s...
International audiencencreasing the amount of amorphous silica in a mixture containing silica and qu...
Precursors are critical parameters in geopolymerization mechanisms because they govern the reaction ...
The mechanisms of speciation of aluminate and silicate phases during dissolution and condensation st...
Geopolymers are alternative aluminosilicates binders prepared from metakaolin and alkaline silicate ...
Les géopolymères sont des liants alumino-silicatés alternatifs préparés notamment à partir de métaka...
International audienceTwo sets of activating solutions with increasing sodium hydroxide contents wer...
In the context of conditioning of nuclear waste, geopolymers represent a potential alternative to co...
Geopolymers appear as a potential alternative to the conventional cement materials. Alkali aluminosi...
It is commonly accepted that the geopolymers are potential solutions as an alternative to convention...
The specific role of hydroxide ions in highly alkaline silicate solutions has been hardly investigat...
Il est communément admis que les géopolymères sont des solutions potentielles comme alternative aux ...
National audienceLes geopolymeres sont des materiaux aluminosilicates mesoporeux1 a faible teneur en...
Dans le cadre du conditionnement des déchets nucléaires, les géopolymères représentent une alternati...
Geopolymers are alumino-silicate binders prepared by reacting a powdered alumino-silicate source (me...
The alkali activation of metakaolinite permits the preparation of new amorphous cementitious materia...
International audiencencreasing the amount of amorphous silica in a mixture containing silica and qu...
Precursors are critical parameters in geopolymerization mechanisms because they govern the reaction ...
The mechanisms of speciation of aluminate and silicate phases during dissolution and condensation st...
Geopolymers are alternative aluminosilicates binders prepared from metakaolin and alkaline silicate ...
Les géopolymères sont des liants alumino-silicatés alternatifs préparés notamment à partir de métaka...
International audienceTwo sets of activating solutions with increasing sodium hydroxide contents wer...
In the context of conditioning of nuclear waste, geopolymers represent a potential alternative to co...
Geopolymers appear as a potential alternative to the conventional cement materials. Alkali aluminosi...
It is commonly accepted that the geopolymers are potential solutions as an alternative to convention...
The specific role of hydroxide ions in highly alkaline silicate solutions has been hardly investigat...
Il est communément admis que les géopolymères sont des solutions potentielles comme alternative aux ...
National audienceLes geopolymeres sont des materiaux aluminosilicates mesoporeux1 a faible teneur en...
Dans le cadre du conditionnement des déchets nucléaires, les géopolymères représentent une alternati...
Geopolymers are alumino-silicate binders prepared by reacting a powdered alumino-silicate source (me...
The alkali activation of metakaolinite permits the preparation of new amorphous cementitious materia...
International audiencencreasing the amount of amorphous silica in a mixture containing silica and qu...
Precursors are critical parameters in geopolymerization mechanisms because they govern the reaction ...
The mechanisms of speciation of aluminate and silicate phases during dissolution and condensation st...