Construction materials company Cemex (CX -1.28%) is up huge this year -- 70.67% since the beginning of January -- and it's mostly due to the company's earnings growth in the U.S. Earnings accounted for half of the company's EBITDA this year, with American earnings for its cement business up 16%, its aggregates up 10%, and its ready-mix cement up 16%. In this video, Motley Fool materials analyst Taylor Muckerman tells us what we can expect from this company in 2013, as the housing market continues to recover, and construction demand continues to grow.