At the end of scene 10, Stanley and Blanche fight and he carries her away to rape her.
During scene 10, Stanley catches Blanche in a lie. He goads her on and fights with her after she's continued on with her story that he knew wasn't true. As tensions spiral, they fight. She wants him to leave and he insists that he isn't going to.
Near the end of the scene, Blanche threatens Stanley with a beer bottle. She breaks it on the table and threatens to twist it in his face. He mocks her. Stanley flips a table and attacks her, then disarms her. He says they've had that date from the beginning and then she falls down. He picks her up, takes her away, and rapes her offstage.