Yueyang Foundation Reinforcement Project, Foundation Reinforcement Grouting, House Addition Retrofit Reinforcement, Which Yueyang Reinforcement Company to Choose? Choose Guode Reinforcement Company, Focused on Foundation Reinforcement for Over a Decade!
The foundation has local anomalies. The first step is to investigate the cause, followed by determining the extent and reinforcing the area. Improper handling can lead to severe consequences, such as uneven settlement, which prevents the upper structure from receiving stable support. The choice of measures requires a determination based on various internal and external conditions.
1. When poor soil (such as silt) is present in the foundation trench, it should be thoroughly removed and replaced with suitable fill material. When the groundwater level is relatively high, it is generally necessary to conduct corresponding treatments below the damp-proof layer (such as setting reinforced brick ring beams) to avoid uneven settlement issues.
2. Treatment of Brick or Earth Wells: When brick or earth wells are present in the foundation trench, use soil with properties similar to those at the bottom of the well for backfilling, compact it, then remove the brick lining, ensuring the removal depth exceeds 1m below the trench bottom. Next, perform a layered compaction operation using loam (with a 3:7 ratio) until reaching the trench bottom. If the well diameter is excessively large (over 1.5m), apply other necessary reinforcing measures to the upper structure.
Measures.
3. When there are harder debris, such as tree roots, in the local area of the foundation trench, they should be completely removed, and the two treatment methods mentioned earlier (one, the method for loosening soil pits; two, the method for brick wells or earth wells) should be employed. This helps to avoid uneven settlement issues.
4. "Rubber clay" treatment is a common issue in foundation construction. Due to the nearly saturated moisture content of rubber clay, using compaction equipment to deal with such foundations often fails to achieve the desired results and may even become softer with each compaction. Upon discovering this type of soil, it is typically first completely excavated, then backfilled with a specific gradation of sand and gravel, and compacted densely.
5. There are various methods available for reinforcing foundation bases. The choice of which method to use depends on a combination of internal and external conditions.
There are two commonly used methods:
One, Lime-soil Capping Method. The Lime-soil Capping Method refers to mixing lime and clay in a 2:8 volume ratio and blending them evenly, then laying them in layers within the foundation trench and compacting them. This method offers numerous advantages, including ease of operation, quick construction, and lower cost. It can be used for reinforcing and treating various foundations within the range of 0.3 to 2.0 meters. It is important to note that lime-soil has certain limitations in frost resistance, so it is typically used above the frost line.
Two, Natural Grade Sand and Gravel Lining Method. This refers to laying river pebbles and sand in layers within the foundation trench and compacting them. This method is commonly used for treating foundation bases, including: 1) deep foundation bases, 2) foundation bases with high water levels, and 3) reinforcing foundation bases with excessive waterlogging and difficulty in compaction. This method is usually implemented through mechanical operations.
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