| 摘要 |
PURPOSE: A road gutter and a maintenance method thereof are provided to prevent shaking of a boundary stone even if the road gutter is crushed at a shallow depth, and complete a maintenance construction in a short time. CONSTITUTION: A road gutter maintenance method is as follows. After a road gutter(10) is crushed at a specific depth(D), pre-mixed mortar is spread out on the crushed part. The cured pre-mixed mortar is composed of a polymer 3-5 weight%, an expansion agent 4-6 weight%, cement 30-40 weight%, silica 40-50 weight%, a mineral admixture 2-4 weight%, and an admixture 1-3 weight%. |
