Indonesia’s cement consumption rose 4.2 per cent in September from a year earlier, the country’s largest cement maker said on Monday.  State-controlled PT Semen Gresik Tbk , 25.5 percent owned by Cemex SA, said Southeast Asia’s largest economy used 3.04Mt of the building material last month, up from 2.92Mt in 2004.  Domestic cement sales of Semen Gresik alone rose 5.8 percent to 1.43Mt in September. Including exports, total Gresik sales rose 9.8 per cent to 1.63Mt, Gresik reported. Indonesia consumed 30.04Mt of cement in 2004, up from 27.54Mt in 2003. Demand for cement in the country to expected to increase by 5-10 per cent this year.