Next weekend, Mixed Concrete returns to Chapel Hill for its third annual installation. Mixed Concrete is a student art show designed to unite the UNC community and raise awareness and funds for the local Habitat for Humanity affiliate. There will be a silent auction of student artwork on Friday, Jan. 24 from 7 p.m. until 2 a.m. and Saturday Jan. 25 from 10:30 a.m. until 12 a.m. at TRU Deli +Wine.