The present invention relates to a method of making a solid cleaning composition. The method can include pressing and/or vibrating a flowable solid of a self-solidifying cleaning composition. For a self-solidifying cleaning composition, pressing and/or vibrating a flowable solid determines the shape and density of the solid but is not required for forming a solid. The method can employ a concrete block machine for pressing and/or vibrating. The present invention also relates to a solid cleaning composition made by the method and to solid cleaning compositions including particles bound together by a binding agent.

Disclosed is a measurement device for a vibration device of a concrete-block production plant. The vibration device has a vibrating table and impact strips arranged parallel to each other and parallel to the ground with relation to their longitudinal axes. The measurement device comprises at least one measurement unit for distance. The measurement unit is arranged above the vibrating table and the impact strips, wherein the measurement unit can be guided orthogonally to the impact strips and parallel to the ground using a guide unit. During the guiding process, the measurement unit operates at predefined measuring positions and/or positions determined during the guiding process via the impact strips and the vibrating table, using the measurement unit, the vertical distances from the top sides of the impact strips and/or the vibrating table to reference positions, which result from the heights of the measurement unit at the respective measuring positions, can be determined.

A method for molding a ceramic core includes introducing a slurry to a mold and vibrating the mold. The slurry has: silica-containing particles; polymer fiber; and matrix precursor. The mold has an outer tool and a liner held within the outer tool. The vibrating comprises operating a plurality of vibration transducers distributed along the mold.

A method for molding a ceramic core includes introducing a slurry to a mold and vibrating the mold. The slurry has: silica-containing particles; polymer fiber; and matrix precursor. The mold has an outer tool and a liner held within the outer tool. The vibrating comprises operating a plurality of vibration transducers distributed along the mold.