The claims of fixing 'brackets' - sections of matches - were made in a covert tape recording of sports agent Mazhar Majeed by an undercover journalist posing as a rich Indian businessman.
They were slammed as a 'baseless' and 'outlandish' claims by a person lacking credibility by Cricket Australia who said their players had been unfairly maligned.
Speaking in Sydney before flying out to the tour of South Africa, Clarke said he was 'quite' surprised by the claims.
'For me personally, it's not the Australian way,' Clarke said.
'Never in my time have I experienced a conversation with anybody about any such thing.
'I can't really talk on behalf of anyone else, but match fixing to me, it's a given that you just stay away.
'There's obviously been a couple of occasions when guys have been approached and that's been reported to our team manager and the ICC, as we experienced last summer, so all the boys in the Australian team are aware that it is happening, it is going on.
'But it's never involved me and I'm very confident it's never involved any of the Australian players.'
Clarke felt it would be a significant achievement for Australia to beat South Africa in the one-day and/or Test matches.
'South Africa are a very tough team in any form of the game, especially in their own backyard, so it will be a great achievement,' Clarke said.
He said a one-to-two hour period could be crucial in a Test and that being disciplined and executing plans was the difference between winning and losing.
He described two of his young bowlers, spinner Nathan Lyon and teenage paceman Patrick Cummins as 'wonderful talents.'