Abstract: To provide a practical mat for decorative aggregate exposed finishes applying for decorative finished concretes or the like and a method of industrially manufacturing a novel mat for decorative aggregate exposed finishes carrying a wide variety of decorative aggregates such as made of natural stones, ceramics, glass and plastics. A practical mat for decorative aggregate exposed finishes according to this invention is made through following steps; placing a hot melt adhesive film on one surface of soft and flexible decorative aggregate carrying net having a mesh size smaller than the particle size of decorative aggregates and greater than 2 mm, placing decorative aggregates on the hot melt adhesive film, and heating them entirely to a temperature higher than the melting point of the hot melt adhesive, thereby adhesively bonding the decorative aggregates and the carrying net for reinforcement firmly.

Abstract: A hydraulic composition comprises a hydraulic component and an organic hydrogel, and optionally aggregate, a reinforcing material and other additives and has a slump value, determined by the testing method of JIS A1101, of not more than about 1 cm in a concrete formulation and a flow value, determined by the testing method of JIS R5201, of not more than about 120 mm in a mortar or paste formulation.

Abstract: In a process for producing a coke by carbonization of a starting coal, the improvement wherein a coal containing a bulk density improving agent composed of a high-molecular organic compound capable of forming a hydrous gel in the presence of moisture is used as the starting coal.

Abstract: A hydraulic composition comprises a hydraulic component and an organic hydrogel, and optionally aggregate, a reinforcing material and other additives and has a slump value, determined by the testing method of JIS A 1101, of not more than about 1 cm in a concrete formulation and a flow value, determined by the testing method of JIS R 5201, of not more than about 120 mm in a motor or paste formulation.