| 摘要 |
PURPOSE:To provide a nailable lightweight concrete, having high strength in spite of a lighter weight than that of lightweight concrete using a conventional artificial lightweight aggregate, having low water absorptivity, excellent in heat insulating properties, durability, impact resistance and crack preventing properties. CONSTITUTION:The objective lightweight concrete is composed of a cement, water, synthetic resin expanded beads having 0.1-1.5mm average grain diameter and fiber having 1-30mm length. The water-cement ratio is <=45% and the mixing ratio of the synthetic resin expanded beads is 10-55vol.%. |
