French cement maker Ciments Francais posted first-half revenues of Euro 1.675bn up 10.2 per cent on the year, its parent company Italcementi said in a statement on Monday.  Sales in North America rose 8.4 percent to Euro 265m, using new IFRS accounting standards, due to higher cement prices.  European Union revenues grew 2.2 per cent to Euro 932m as better second-quarter sales offset a slump caused by bad weather in the first quarter.