Following papers might help; they have really good information:

1. Article Portland metakaolin cement containing dolomite or limestone ...

2. Article Limitations of the hydrotalcite formation in Portland compos...

Also, try to go through their references.

I agree with Mazen answer

I recently I was mixing the OPC with limestone and GGBS or OPC with limestone and fly ash, but the results have not been published yet.

Thanks!

Mixing of metakaolin in OPC will affect setting of time. Adding of metakaolin in appropriate quantity ( not more than 7 to 8 percent ) will be helpful for improving strength and permeability of concrete at higher curing period.

Thanks Ishwar,

Im looking at using "cheap" Ca to integrate with the mortar using the MK...

In addition Im evaluating the performance of MK vs CFormate ito cost, setting time and ease of use...

Thanks all for sharing links... incredibly insightful.

My own work has shown excellent performance of High Quality Meta-kaolin with a dosage level 0,5% m/m in tile adhesives (performance related to increased strength and shorter setting times) cement to fly ash ratio is 1:3 with a relatively low water demand- which has been interesting.

Thanks again for the support, and will continue to update as we move along.