Niebres, Mary Grace D., Performance of concrete with low density plastics/ Mary Grace D. Niebres, Mark Ll. Bolo, Shrirriel G. Buena - Nabua, Camarines Sur : Camarines Sur Polytechnic Colleges ; 2011. - 79 leaves Undergraduate Thesis (BSCE) - Civil Engineering Subjects--Topical Terms: Pavements, Concrete--Performance.