You can only if your name appears in the chart ! Or with the permission of the TTE. Duronto staff are tough, unlike other trains.
If it is eticket, then waitlist ticket is automatically cancelled at charting. If it is i-ticket, please approach curent reservation counter to see if there is any vacancy after charting. Highly doubtful though.
Durontos do NOT carry unreserved class. So it is not advisable to board the train except under the circumstances mention in the first para. Your name would appear if more than one person is...
more... booked, and one of the persons has RAC/confirmed seat. If it is single person, the name may appear in the chart.
Don't take chances. Be sure.
Good wishes.