I found this topic on an external site, it's about a Boeing 737-4 damaged during engine run up at Sialkot international Airport (Pakistan): NL B734 Damaged During Engine Run Up (photos)
In the comments/discussion, people say that there is similar apron paving made of blocks at other major airports.
Are there any photos or verification of lose-block apron?
One comment says that London Heathrow has some, does somebody have any verification or Link?
Block paving is very common at airports. All over Heathrow and Gatwick. It works fine when its built correctly but if it's not maintained well then that happens.