BUZZ-CRH: rallies in volume after first dividend hike in 7 yrs
** Building materials & products maker CRH +2.8%, top of FTSE 100 in volume
** Interim dividend increases 1.6% (first rise since 2009, Jefferies flags)
** Guides FY earnings >3 bln eur
** CEO sees no big Brexit impact on UK biz
** Most actively traded UK blue-chip stock (RM (LSE: RM.L - news) : tricia.wright1.thomsonreuters.com@reuters.net)