Yes, it's a big subject. Also what are we stabilising? ... road subgrade? If so, both cement and lime (normal mortar type building lime will do), are useful in chemically breaking down (up?) the existing reactive clay components and producing a less "reactive" soil body.
I've used both the above with good results in South Australia, one of the 2 worst places in the world for highly reactive clay occurrence. If this is road-making work you will need cultivation type equipment for completely mixing your additive into the stratum to be treated. Mixing to a depth of stratum of 450mm would be an effective minimum in my view.
ADT [sig][/sig]