take a look at technology papers at geopolymer.org (Geopolymer Institute of Prof Davidovits ) there is reported LTGS project . You can find there every information you need.
But remember that low liquid possible isn’t the correct approach, silicate demand depends on alumina silicates precursors that you use .
Speaking about metakaolins this demand never will be low , but results will be every time the best .
Using more inconstant raw materials like wastes , for example Class F fly ash , you must check the high temperature ones to avoid almost completely coal pollutions that obstacles geopolymerization and mechanical results however will be quite weaker at the same curing Time.
See this paper and contact Prof Dinakar Pasala at IIT Bhubaneswar. The other expert if Prof Koluuru Subramaniam of IIT Hyderabad. They will give you proper guidance.
Article A mix design procedure for geopolymer concrete with fly ash
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