(Mortar) In a dream, a steamroller represents a hard-working man, or a person who tries to make good of an investment but fails to succeed.
A steamroller in a dream also represents force, adversities, aberration, despotism, or it could mean bringing things down to proper level and correcting the course of one’s life.... Islamic Dream Interpretation
A steamroller may point out that you have allowed someone to flatten your spirit. It may be the response to a conversation in which you felt run over by the persuasive ideas of another. Or you may have felt that you have been pushed away from your own intention It may be a response to emotional trauma.... Ariadne's Book of Dream
Dreams of a steamroller signify that you are either feeling flattened out by someone’s overbearing behavior, or that you have been taking over a situation, and are rolling over people’s feelings, leaving them flat and depleted. Consider the feeling tone to discern the significance for you. See Bulldozer.... Strangest Dream Explanations
To see a steamroller in your dream - whether it was you or someone else driving it - generally suggests that you are too pushy with others. Alternatively, this dream might mean that you let people walk all over you.... My Dream Interpretation