Dear Raheem,

I must respect my NDA so I cannot share specific instructions about the formulation of Geopolymer materials.

I’m located in Italy so I don’t know the normative you wrote. What I can say is:

1. you need to know the fundamentals of Geopolymer technology and from your question is quite evident that you don’t know. To learn more you must participate at GP camp in July in France at Geopolymer Institute. Find here all the informations www.geopolymer.org

2. you need to study the properties of Metakaolin to understand if it’s the correct raw material for the precursor about SCC application. Metakaolin is for sure super reactive if calcined at the correct temperature or could be much less useful if calcined at too high temperature and for too much time. I have learned the most of this Knowledge from the book of professor Davidovits. But It’s very technical you need to have a good background about geology and chemistry. Maybe the first time you will read will give your headache, but it’s necessary to enter inside the terminology and about why is so important to know which material using and how.

3. mix design of Geopolymer materials is every time the same. I cannot explain in details but it’s one of the topics of GP camp every year. I’m working together Davidovits about new materials to present at the camp showing the versatility of GP materials.

4. please forget the Portland cement way to approach the formulation. It’s definitely other technology not hydraulic but hydrophilic so GP aren’t Alkali Activated Materials don’t exist any KASH or NASH and all ratio with water are useless. Water is THE most efficient superplasticizer because at very low amount produces big changes about workability and flow.

5. admixtures like polycarboxilates, cellulose ethers and polymer resin don’t work at all specially with fine material like Metakaolin. You need to learn how to create good flow selecting the best aggregates and managing the extra water at best. Defoamer can be added like water repellent silane or fibers (never use basalt that will be mineralized by the GP ambient disappearing as fiber).

6. Reagent selection NOT activator. Depending on the final application you must select the proper reagent sodium or potassium (acidic way it’s too expensive for this application) and at the camp or from a chapter in the book of Davidovits you will learn why is called reagent and why it has that specific alkalinity, classification and molar ratio.

In general potassium silicate has much lower viscosity, higher stability, higher wettability and less ions migration (no efflorescence) than sodium silicate reagent. But it costs 3-4 time more than sodium. This in fact is denser, at least 10 times more viscous, must be dosed very precisely to avoid migration and efflorescence even if allow you to obtain little higher final mechanical performances.

So behind a product normally there are months of study. I’m representing private Companies so I cannot share know how and also I don’t want to create at my companies any competition 🤷🏻‍♂️.

GeoMITS and RENCA have different business models but both never work for free.

Hoping to see you at next GP Camp.

Best regards

Alex Reggiani

• Alex Reggiani Your tips have helped me a lot. Thank you from the bottom of my heart. I apologize if I caused you any inconvenience

You are welcome. No problem