The gap developed between the final lining and rock due to the shrinkages in the concrete. Hence to fill these thin voids we perform the contact grouting. This is the case for hydro but in case of transport tunnels the grouting done between lining and water proof membrane.
@ErKaushalKishorSingh
27 күн бұрын
Inject contact grouting between rock surface and concrete lining.
@factsfactory6586
Жыл бұрын
Thank you sir and good night.
@ErKaushalKishorSingh
Жыл бұрын
Thanks
@anubhavsingh1198
3 ай бұрын
What about pvc membrane, during grouting it would damage which is not correct.....
@VR.katoch
10 ай бұрын
Nice information.. But did not told the full procedure Type of cement Dia of bolt /installation and packing How much we should keep out Distance between bolt to bolt Type and qty of admixture to be use W:c ratio. After all informative for freshers
@ErKaushalKishorSingh
10 ай бұрын
Will be given in detail as early possible
@malviyageo11
Жыл бұрын
Many many Thanks sir.
@ErKaushalKishorSingh
Жыл бұрын
Thank
@mohsinfarooq8376
Жыл бұрын
Thank you so much sir.
@ErKaushalKishorSingh
Жыл бұрын
Most welcome
@tsrpx5356
2 ай бұрын
Concrete to water proofing membrane surface not rock surface for rock surface you should be hole in pvc membrane 😊
@ErKaushalKishorSingh
27 күн бұрын
Your question is not clear. If you could not write in english then please write in hindi.
@RajaKumar-uw9he
Жыл бұрын
Anchor grout ki prectical and theorical expain de.
@ErKaushalKishorSingh
Жыл бұрын
Same will be explained by a video in near future
@tabishashrafi9700
Жыл бұрын
Sir, What would be the Pressure in bar for contact grouting and how to monitor it during procedure.
@ErKaushalKishorSingh
Жыл бұрын
2 to 3 Bar
@tabishashrafi9700
Жыл бұрын
@@ErKaushalKishorSingh thank You Sir
@ErKaushalKishorSingh
Жыл бұрын
Pressure for contact grouting should not be more than 0.6Psi at the injecting point @per one feet depth. The Psi may be converted in to bar by relation 01Bar=14.5038 Psi
@tsrpx5356
2 ай бұрын
1:4 is Cement: Sand ratio & what about wc
@ErKaushalKishorSingh
27 күн бұрын
It will be depend up on local temperature which should be decided by Quality Control department.
@parveenkumar-xk2pj
Жыл бұрын
Hello sir, I am working in metro tunnel project in Bangalore, Karnataka locomotive opritor 🙏🙏 thinks sir
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