Answer Posted / satya paul
function of dry lean concrete is to provide firm base to support traffic over pqc pavement.there should be no bond between pqc and dry lean concrete.after laying dry lean concrete with the help of paver and compacted with roller passes.minimum eight times up and down i.e total 16 passes.it should be sprayed with MC0 grade bitumen primer.cracks will appear from 10m to 15 distance depending upon cement quantity,mix grading of aggregate ,temperature and wind speed,
before laying pqc ,500 micron anti static polythene sheet shall be laid over dry lean concrete.cube strength of dry lean concrete shall be 5n/mm2 and above.higher cement depends upon the strength required for sub base.max size of aggregate shall not be more than 20 mm.good mix falls in the middle portion,weaker mix falls at the ends.take sample from the end and compare with the middle portion of concrete.difference in strength shall not vary more than 6%.
| Is This Answer Correct ? | 20 Yes | 3 No |
Post New Answer View All Answers
what is the formula to find the diagonal shape stirrups?
why is M25 and Fe 500 assumed to be most economical? i feel it is not.This is because higher grade of concrete and steel has higher lapping length and anchorage length compared to lower grades..
Pls help me to arrive the rates for centering shuttering for highbay using H-frames?
How can you achieve soil enforcement?
What difference comes in constructing of house and a housing complex like society
Required amount of Steel bars, cement/ square feet for roofing of residential building upto 3rd floor.
What is the snap size in civil and how can we create it?
What is Architect-Prepared Contract?
What is Gsb tollens ?
in design case of structural member best suitrable percentage of steel limit is what
What are the ingredients of pre-stressed concrete?
how beam.coloum ,slab, footing are designed as per indian code.. detail procedure?
What is the different type of slump test indications?
1) write Short notes about Shellow & Deep well? 2) What is the full form of SPT & SMB? write short notes. 3) write short notes about efficiency of Riveted joint.
The 4 main factors to start a construction project are––