Is volume expansion possible upon dissolution of solute?
Yes. In thermodynamic jargon, the onset of a change in volume under dissolution is known as an excess volume. If the solution takes up less volume than its constituent parts it is said to have a negative excess volume. Otherwise we have a positive excess volume. You might also find the term excess molar volume.
By googling each term we find many results concerning this, which seems to mainly manifest in metal alloys.