Types of disease | Crack | Looseness | Cavity beneath slab | Subsidence | Water-rich | ||||||
---|---|---|---|---|---|---|---|---|---|---|---|
Structur al layer | Quantit y/place | Leng th/m | Density/(m/km) | Quantit y/place | Acrea ge/m2 | Quantit y//place | Acrea ge/m2 | Quantit y//place | Acrea ge/m2 | Quantit y/place | Acrea ge/m2 |
Acreage | 265 | 1239 | 136.2 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
Base | 198 | 1306.8 | 143.6 | 12 | 236 | 6 | 16.6 | 5 | 98.5 | 0 | 0 |
Sub-base | 47 | 306 | 33.6 | 3 | 60 | 0 | 0 | 1 | 127.5 | 0 | 0 |
Soil foundation | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 90 | 3 | 1500 |
Stack number | Treatment scheme | Before the treatment | After the treatment | Variation range before and after the treatment (%) | |||
---|---|---|---|---|---|---|---|
Deflection representative value (0.01 mm) | Coefficient of variation (%) | Deflection representative value (0.01 mm) | Coefficient of variation (%) | Deflection value | Coefficient of variation | ||
K3252 + 020 ~ K3252 + 080 | After milling 19 cm of the asphalt surface + 18 cm of the upper base, filling the base of C20 plain concrete to top + relaying the surface of asphalt mixture to the top | 70 | 25.5 | 26 | 19.1 | 62.9 | 25.1 |
K3254 + 300 ~ K3254 + 480 | 63 | 28.1 | 25 | 24.6 | 60.3 | 12.5 | |
K3256 + 160 ~ K3256 + 280 | Deep grouting of the roadbed + surface treatment | 43 | 18.3 | 24 | 16.8 | 44.2 | 8.2 |
Newly paved pavement | Upper layer | 4 cm modified asphalt SMA-13 |
Mid-layer | 6 cm modified asphalt AC-20C | |
Old road pavement | Asphalt pavement | 4 cm modified asphalt AC-16C Overlay |
4 cm ordinary asphalt AK-13A upper layer | ||
5 cm ordinary asphalt AC-20I mid-layer | ||
6 cm ordinary asphalt AC-25I lower layer | ||
Base | 36 cm 5% ~ 6% cement stabilised macadam | |
Sub-base | 20 cm 3% ~ 4% cement stabilised aggregate | |
Cushion | 15 cm graded aggregate | |
Thickness of new pavement | 10 cm | |
Total thickness | 100 cm |
Initial stake number | Terminal stake number | Treatment lane | In 2003 | In 2008 | In 2010 | In 2014 | In 2015 | In 2016 | In 2017 | In 2018 |
---|---|---|---|---|---|---|---|---|---|---|
3252 + 020 | 3252 + 250 | Open to traffic | 4cmAC13C | |||||||
3252 + 250 | 3252 + 524 | Carriageway | Open to traffic | 4cmAC13C | Milling and relaying | |||||
3252 + 524 | 3252 + 580 | Open to traffic | 4cmAC13C | |||||||
3252 + 580 | 3252 + 680 | Carriageway | Open to traffic | 4 cmAC13C | Milling and relaying | |||||
3252 + 680 | 3252 + 810 | Open to traffic | 4 cmAC13C | |||||||
3252 + 810 | 3253 + 330 | Carriageway | Open to traffic | 4 cmAC13C | Milling and relaying | |||||
3253 + 308 | 3253 + 500 | Carriageway | Open to traffic | 4 cmAC13C | Milling and relaying | |||||
3253 + 500 | 3253 + 680 | Open to traffic | 4 cmAC13C | |||||||
3253 + 680 | 3253 + 888 | Carriageway | Open to traffic | 4 cmAC13C | Milling and relaying | |||||
3253 + 888 | 3255 + 307 | Open to traffic | 4 cmAC13C | |||||||
3255 + 307 | 3256 + 800 | Passing lane | Open to traffic | 4 cmAC13C | Milling and relaying | |||||
3256 + 800 | 3257 + 435 | Passing lane | Open to traffic | 4 cmAC13C | Milling and relaying | Milling and relaying | ||||
3257 + 435 | 3257 + 504 | Passing lane | Open to traffic | 4 cmAC13C | Milling and relaying | |||||
3257 + 504 | 3258 + 050 | Passing lane | Open to traffic | 4 cmAC13C | Milling and relaying | Milling and relaying | ||||
3258 + 050 | 3258 + 545 | Passing lane | Open to traffic | 4 cmAC13C | Milling and relaying | |||||
3258 + 545 | 3258 + 848 | Passing lane | Open to traffic | 4 cmAC13C | Milling and relaying | Milling and relaying | ||||
3258 + 848 | 3258 + 360 | Passing lane | Open to traffic | 4 cmAC13C | 4 cmAC16C | Milling and relaying |