Now, I'm doing dissertation about the use of fibre nylon in the concrete mix to improve strengthens. My question, how the problem of removal of nylon fiber can be described problem study for my thesis. Is it necessary for me to state the problems facing the concrete always cracks where the fiber can reduce the incident from becoming worse. Or nylon fiber waste a lot of use in the manufacture of concrete which provides useful benefits that can reduce the problem of waste disposal. How I'm going to described on that particular things.