| 摘要 |
PURPOSE: A composition of rehabilitation and reinforcement materials of concrete structure is provided to suppress a neutralization of concrete and shows the effect of corrosion protection by using an additive of alkanolamine, and to prevent a deflection phenomenon due to load by combining hydrophilic PVA fiber and polyolefin-based PP fiber. CONSTITUTION: A composition of rehabilitation and reinforcement materials of concrete structure comprises: (a) 79.5-86.9wt% of a complete mortar composition; (b) 0.1-0.5wt% of a fiber composition; and (c) 13-20wt% of a water-based binder composition. The (a) complete mortar composition comprises: 27-37wt% of a cement group mixture; 4-6wt% of gypsum; 2.1-4.5wt% of siliceous waterproof material; 0.8-2.5wt% of EVA based powder polymer; 0.7-2.8wt% of an expansion material; 0.03-0.25wt% of a thickening agent; 0.27-0.85wt% of an antifoaming agent; 0.1-1.1wt% of an alkanolamine additive; and 45-65wt% of aggregate. The (b) fiber composition comprises 10-30wt% of hydrophilic PVA fiber and 70-90wt% of polyolefin-group PP fiber. The (c) water based binder composition comprises: 55-75wt% of acrylic emulsion; 0.2-0.6wt% of an antifoaming agent; 0.1-0.4wt% of a wetting agent; and 24.7-44wt% of water.
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