Lime soil base layer construction quality requirements are essential to ensure the durability and stability of the road foundation. The lime soil must meet specific standards in terms of particle size, uniformity, compaction, and surface condition. Here are the key quality requirements:
1. The percentage of limestone particles larger than 20mm should not exceed 10%, and the largest soil particle should not be more than 50mm.
2. No undigested lime particles or stones larger than 10mm should be present in the lime soil mix.
3. The mixture must be well-blended with a uniform color throughout.
4. After being compacted by a 12-ton steel roller, the wheel track depth should not exceed 5mm.
5. The surface of the lime soil base should be free from floating soil, peeling, looseness, or slurry.
6. The allowable deviation for the quality of the lime subbase is outlined in the table below.
**Lime Soil Base Quality and Requirements**
| Project | Quality Requirements | Allowable Deviation | Inspection Frequency | Inspection Method |
|--------|----------------------|---------------------|----------------------|-------------------|
| Unconfined Compressive Strength (MPa) | R7=0.6–0.8 MPa | ±0.1 | Track area: 1 point; Tian Sai District: 1 point | On-site sampling |
| Ash Content | As per design | Not lower than | Track area: 1 point; Tian Sai District: 1 point | EDTA titration |
| Compaction | Heavy compaction: 95%; Light compaction: 98% | Not lower than | 1000m²: 1 point | Sand filling method |
| Smoothness | Track area: 10mm; Tian Sai District: 10mm | ≤10mm | 20m projects: 1 point | 3m straightedge and feeler gauge |
| Cross Slope | Track area: 0.1%; Tian Sai District: 0.1% | No greater than | 20m projects: 1 point | Water level meter |
| Elevation | Track area: 10mm; Tian Sai District: 10mm | No greater than | 20m projects: 1 point | Water level meter |
| Width | Design width + B | Not less than | 40m: 1 point | Steel ruler |
| Thickness | Design thickness | ±10mm | 1000m²: 1 point | On-site thickness measurement |
**Notes:**
1. In the "Tian Sai District" section, it refers to competition areas such as long jump pits, high jump areas, etc.
2. Each test point is randomly selected, and the error is based on the maximum value.
3. The cross slope result should not exceed 1%.
4. Compaction refers to the ratio of the optimal density.
5. "B" is an additional dimension during construction, typically not less than 30cm.
These guidelines ensure that the lime soil base layer meets the required structural and functional performance standards, providing a solid foundation for further construction. It is crucial to follow these specifications carefully to avoid future maintenance issues and ensure the longevity of the pavement.
Drip Glue Keychain,Cartoon Keychain Design,Drip Glue Keychain Design,Customized Adhesive Keychain
DONGGUAN TETSUMET TECHNOLOGY CO.,LTD , https://www.tetsumet.com