While colloquially used interchangeably in Greek, I would argue cement = τσιμέντο, while concrete = μπετόν/σκυρόδεμα. Of course, we say τσιμεντόδρομος (cement road) and never μπετονόδρομος so this really amplifies the confusion. In any case, it's safe to say this road is surface=concrete.