Abstract: The present invention provides: a cement/asphalt mixture comprising an aggregate, an asphalt emulsion, cement, a hydraulic inorganic material and water, characterized in that the surfaces of aggregate fragments are covered with the asphalt particles prepared by the coalescence of asphalt emulsion and that the hydraulic inorganic material and water are present in the interstices between the aggregate fragments; a process for preparing a cement/asphalt mixture, the process being characterized by the steps of adding 2 to 12 parts (in terms of solids content) of a cationic or anionic asphalt emulsion to 100 parts of an aggregate; mixing them; and mixing the resulting mixture with 1 to 20 parts of a hydraulic inorganic material; and a process for preparing a cement/asphalt mixture, the process being characterized by the steps of adding 2 to 12 parts (in terms of solids content) of a cationic or anionic asphalt emulsion to a mixture of 100 parts of an aggregate and 0.

Abstract: An expansive solidifying material which consists of gypsum, blast furnace slag and portland type cement as the main components and soluble aluminate as a hardening promoter. The expansive solidifying material of the invention is quite suitable for solidifying poor grounds containing much water and the solidifying material is quite excellent in the initial hardening, long term strength, water absorption, expansibility and the reduction of production cost.