do yourself a favor and save aggravation and money just pour a new reinforced concrete slab you will love the results . should have it power troweled but the finish is your preference.then all that is left to do is enjoy
glue and screw toghether using galvanized screws and PL premium ,joints will last a long
time but dont get glue on your hands or clothes that lasts a long time also . good luck with your project.