Ahem... forgive me, but, as an inebriated engineer, I must point out that "concrete" is a mixture of aggregates and cement. Cement is a binding agent. Cement is cement. In the commonly known "concrete", Portland cement is the binding agent. When you "Crazy Glue", that is the cement. When you need more glue from the bartender to hold the party together, that is crazy. It just means you are plastered.