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Core Drilling Test
Product code : 799
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- TCVN 9395:2012 “Bored pile - Construction, check and acceptance”
- TCVN 9351:2012 “Soils - Field testing method - Standard penetration test”
- Determine position of drill machine on the head pile and fix it.
- Take elevation data of pile.
- Measure the length drill tube (tube D110) to estimate length of sample concrete.
- Measure the length drill rod.
- Drop-down auger to bottom of drill tube. Perform drill cutting bottom of tube and drill concrete, breaking core.
- Drawing up to take drilling samples. Place the core in due course be taken up. Place the ruler to measure the length and diameter of the samples.
- Install SPT tube and drop into the bottom pile.
- Take photos and store the samples.
- Select the qualified sample to compresstion test in specialized laboratory.
- Project name and location; The employer, designer, pilling contractor and the testing agency.
- Information of test piles.
- Description of drilling procedure, samples, sediments and the geological layers below the pile tip.
- Site photos.
- Conclusion and recommendation.
- Result of compresstion test of samples.
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Purpose of the test: Core drilling test allows visually check the overall quality of the concrete on the bottom pile, deposit sediment and geology contiguous with pile tip. Testing method: To check quality of concrete at pile tip of test pile, place a hollow tube along pile to the bottom pile from 0.5 ~1m. Using geological survey drill machine to drill through the bottom of tube to take a sample concrete at pile tip. Then using the method of standard penetration test SPT to check humus and determine geologists under the pile tip. Testing procedure: |
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