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Kentledge for testing pile capacity

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Hi,any answer?

Thank you for watching our videos. In bored piling works, checking the bentonite slurry is a critical process to ensure the stability of the borehole and the quality of the final pile. Here are the key times when bentonite slurry should be checked: 1) Before pumping into the boredhole: Density: Ensure the density of the bentonite slurry meets the required specifications. Typically, the density should be around 1.03 to 1.10 g/cm³. Viscosity: Check the viscosity using a Marsh funnel. The viscosity should usually be between 28 to 40 seconds for a 1000 ml flow. pH Level: The pH should be between 8.5 and 10.5 to ensure the bentonite is active and will perform effectively. 2) During boring operation: Density and Viscosity: Regularly monitor the density and viscosity of the slurry during the drilling process to ensure consistency and to avoid sedimentation. Sand Content: Check the sand content regularly (typically it should be less than 4%) to prevent excessive wear on the drilling equipment and ensure the slurry can support the borehole walls. 3) Before Concrete Placement: Cleanliness: Ensure the bentonite slurry is clean and free from excessive sand and debris. This may involve desanding operations. Filtrate Loss: Check the filtrate loss of the slurry. This is important to ensure that the slurry does not dehydrate the soil excessively, which could destabilize the borehole walls. Density and Viscosity: Recheck the density and viscosity to ensure they are within the acceptable range for concreting. 4) After Concreting: Displacement Check: Ensure that the bentonite slurry is properly displaced by concrete during the pouring process. Monitor the return slurry for contamination and ensure it is properly disposed of or recycled. Consistent and careful monitoring of the bentonite slurry at these stages helps in maintaining the integrity of the borehole and ensures the successful installation of the pile. Feel free to ask questions! Thanks again. Kindly suggest our content to your friends and colleagues.

What if the sand content or other viscosity too high?what can we done?air lifting will settle this issue?

of course,

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Of course

14,000 PSI Concrete piles work just fine.

Thanks for watching the video. I'm happy to see that you asked a great question. Sometimes, the cut-off level is much deeper compared to near-surface. The sound concrete must be above the cut-off level for the bored piles. The pile cross-section is perfectly circular in drawings, but it's not in reality. This depends on the soil profiles as well as the verticality of the boring rig. Therefore, there are variations in the concrete quantities theoretically and actually. So, in order to ensure that the sound concrete is above the cut-off level, we usually top up the concrete at the end. That's why we lift the steel casing (ensuring that the required length is embedded below the ground) and pour the concrete into the casing. At the end, we remove the steel casing, as it is temporary. I hope this explanation answers your question.

Okay I get it now. Thank you for sharing 👍🏿

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Google it. There are many suppliers.

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We are happy that a working professional watched our videos, and bring back the memories.

It's just the water. To help during coring.

dust control

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