A Canberra man who traded ice for sex with a teenage girl in the foster system and raped another woman so violently she required emergency surgery has been jailed.

Key points: Robert Glen Sirl was first arrested over a rape that left the victim with life-threatening injuries

Robert Glen Sirl was first arrested over a rape that left the victim with life-threatening injuries He was also convicted of the separate crime of sex with a person under 18

He was also convicted of the separate crime of sex with a person under 18 One presiding judge said it was "difficult to be optimistic" about Sirl's rehabilitation

Robert Glen Sirl was found guilty of multiple offences after two separate ACT Supreme Court trials earlier this year.

WARNING: This story contains graphic content that may upset some readers.

The second charge came after police officers investigating the rape discovered Sirl with a 15-year-old girl, to whom he had given drugs in exchange for sex.

Court heard Sirl claimed brutal rape was consensual sex

He was sentenced to 11 years' jail, with a non-parole period of seven years and eight months.

His earliest release will be June 2026.

The court heard, in the case of the rape conviction, that Sirl had lured the woman to his home to sell her cannabis.

He had given her ice-laced coffee, before claiming he was missing a large amount of cash and she would have to help him find it.

The court heard the search had ended in the bedroom where the woman was pushed onto the bed and raped, including with a sharp object.

The woman fled, and later required life saving emergency surgery to stop the blood loss.

At trial, Sirl maintained the sex was consensual and the pair had used sex toys.

Judges condemn lack of remorse

Sirl was found guilty, in two separate trials, of charges of rape, inflicting grievous bodily harm, and maintaining a sexual relationship with a child.

A sentence hearing heard Sirl was a drug addict who had been smoking cannabis and using up to two grams of ice at the time of the offences.

The woman who was raped by Sirl told the hearing of the devastating toll the attack, detailing how she now suffered from anxiety and depression.

She said she had become agoraphobic and suffered nightmares.

She told Sirl she hated him and would never forgive him, but would take some peace of mind from knowing he could no longer hurt anyone while he was behind bars.

In sentencing Sirl for the offences, both Justice John Burns and Justice David Mossip found he had shown no remorse.

Justice Burns said the motive for the rape may be sexual fetish, and that Sirl had enjoyed exercising power and control over the victim.

"She probably would have died if she had not sought treatment," the judge said.

"It is difficult to be optimistic about your prospects of rehabilitation."

Justice Mossop described the sexual relationship with the child as "the gross exploitation of a vulnerable child by a much older man."

Sirl maintained he thought the 15-year-old victim was 18.