“The term abjection literally means “the state of being cast off”. In usage it has connotations of degradation, baseness and meanness of spirit; but has been explored in post-structuralism as that which inherently disturbs conventional identity and cultural concepts.” (Wikipedia)
Other abject art can be found here >>
More about the theory:
Kristeva, Julia. Powers of Horror: An Essay on Abjection. Trans. Leon S. Roudiez. New York: Columbia UP, 1982.