passport are not expired but request more blank pages for visa or stamping space.

You have to apply for addition of passport pages at the consulate in person with your passport, copy of your personal information pages in your passport, original and copy of your residence permit in Dubai, one passport standard photo and the fee. It usually takes 4 workign days, and there are also -2-day adn 3-day express services. It charged 45 AED
in 2008, but I'm not sure about it now.

It's just adding new blank pages on the same passport.