It appears house slabs in Thailand don't use control joints. I was reading this also appears to be the case in Australia (ref: AS 2870 specification). This is strange because in the US control joints are considered crucial and used prolifically. Can anyone compare the two methods and are there times not to use one versus the other? I would like to know specifically if slabs without control joints are compatible with a ceramic tile floor laid across the entirety and in this case whether control joints are advised at the ceramic tile layer.