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What about the reflection cracks on the cement pavement?

2026-07-02 08:46
2026-07-02 10:36

The following measures can be taken for reflective cracks on cement pavements: 1. ** Crack filling treatment ** - When the crack width is less than 2mm, it can be left alone; for the crack width of 2 - 5mm, it can be filled with modified asphalt; for the crack width of more than 5mm, it can be filled with modified asphalt (such as SSS modified asphalt). Before filling the crack, remove the debris inside and around the crack to keep the crack dry. After filling the crack, sprinkle coarse sand or 3 - 5mm stone chips on the surface. 2. ** Repaired with high-strength repairing materials ** - If the cement pavement had cracks, pebbles, peeling off, and slags, it could be repaired with high-strength repairing materials. A pack of 50 catties of high-strength repair material could repair five to seven square meters of the factory. The ground only needed to be mixed with water and scraped on a thin layer. After solidifying the next day, it could be used by people and vehicles. Moreover, its strength was higher than that of self-leveling. It was suitable for workshops, parking lots, cement roads, etc. It could withstand the crushing of large vehicles. 3. ** Glass fiber grid laid ** - The use of glass fiber grids in cement pavement surfacing projects can enhance the overall tensile strength of the asphalt mixture, effectively improve the stress distribution of the pavement structure, resist and delay the occurrence of reflective cracks on the asphalt concrete pavement caused by cracks or joints on the cement pavement, thereby improving the service life of the rigid-flexible composite pavement structure. However, the ability of the glass fiber grid to resist shear-type reflective cracks is relatively poor. When the cement plate has a void at the bottom of the plate, the corner of the plate is bent or the difference in bending is large, the anti-cracking effect of the glass fiber grid will be greatly reduced. 4. ** Deal with the basic level ** - If the reflective cracks are caused by the weakness of the base layer or insufficient thickness, it can be strengthened by thickening, replacement, or comprehensive stability measures according to the situation. Semi-rigid materials with good water stability and small contraction were the first choice. After strengthening the base layer, the asphalt surface layer was laid. 5. ** Treat the embankment (when the embankment is unstable and causes reflective cracks)** - Lime or cement can be used to treat the embankment, or it can be reinforced by injecting. The depth can be determined according to the specific situation, generally 20 - 40cm. 5% - 10% of slaked lime or 4% - 6% of cement. After the soil embankment was stabilized, the base and surface layer would be rebuilt. 6. ** Repair with sand-fixing agent (suitable for repairing cracks in roofs and cement pavements and when waterproof is required)** - The sand-fixing agent could be used to repair cracks in cement pavements. It was not only waterproof, but also simple to construct. Read more exciting novels for free

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2026-07-02 14:08

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2026-07-02 14:07
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