Geopolymer compositions and methods

A method, comprising:

• preparing a pumpable geopolymer slurry comprising:
• an aluminosilicate source;
• an alkaline source;
• and
• a carrier fluid, wherein the alkaline source generates an alkali metal hydroxide or alkaline earth metal hydroxide in situ;
• placing the pumpable geopolymer slurry in a subterranean well;
• and
• setting the pumpable geopolymer slurry to form a geopolymer.

A method, comprising:

• preparing a pumpable geopolymer slurry comprising:
• an aluminosilicate source;
• an alkaline source;
• and
• a carrier fluid, wherein the alkaline source generates an alkali metal hydroxide or alkaline earth metal hydroxide or both in situ, and wherein the aluminosilicate source is a fly ash, a volcanic ash, a ground blast furnace slag, a calcined or partially calcined clay, an aluminum-containing silica fume, a natural aluminosilicate, a synthetic aluminosilicate glass powder, a zeolite, a scoria, an allophone, a bentonite, a red mud, a calcined red mud, a pumice, or a combination thereof.