| 摘要 |
<p>According to an embodiment of the present invention, a rubber dam comprises: a concrete base part installed in the direction of a steel width; an air bag arranged in the concrete base part, and standing and lodging by an amount of fluid flow; and a clamping part to fix the air bag on the concrete base part by pressing both ends of the air bag. The air bag includes: an inner layer part formed by alternately stacking a basic inner layer sheet containing carbon black and a reinforced inner layer sheet containing nylon, and an outer layer part forming the outermost layer and containing carbon black to correspond to expansion in standing and contraction in lodging by improving flexible properties; and a reinforcing part wherein a reinforcing material existing as particles in molten carbon black is dispersed, distributed, cured, and formed to improve stiffness in standing and lodging, and arranged between the outer layer part and the inner layer part to prevent wear or damage from being transmitted to the inner layer part when the outer layer part is worn or damaged.</p> |
