BOARD FOR HOLLOW CONCRETE SLAB HAVING EXCELLENT SOUND- INSULATING PROPERTY, ITS MANUFACTURING METHOD AND HOLLOW CONCRETE SLAB

摘要

PROBLEM TO BE SOLVED: To economize concrete by the volume section of a buried material composed of a foam molded form block made of a synthetic resin. SOLUTION: In the board 1 for a hollow concrete slab constituted of a concrete board 2, a plurality of rows of reinforcements 3 disposed in parallel on the concrete board in the longitudinal direction of the concrete board and the buried materials 4 consisting of a foam molded form made of the synthetic resin arranged among a plurality of rows of the reinforcements and having excellent sound-insulating properties, the buried materials 4 are arranged in at least two rows in the longitudinal direction of the concrete board 2 while being disposed at intervals of 150-400 mm in the longitudinal direction of the concrete board.