what is the proportion of M25 geade cincrete.?
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Answer Posted / amit soni
M-25 1:1:2 Its is as per nominal mix design
But design mix cement aggregate & sand are proper testing
in Lab 1:1:2 not for design mix
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As per Kandal suggestions, we have implemented rolling starts on 140 (+/- 5) degrees and we kept 3 rollars to complete the rolling before falling 125 degrees and the Aggregate AIV is below 22. But When the DBM bed is being rolled 3rd high viabration, (Before 1 plain & low ,2 high Viabrations), the aggregate is getting sharp edge agg. projections are damaged. As the literature is said that, the VG-30 Grade having better control the temp. susceptibility than Penetration grade. if so we could not get this problem at site. But we are facing on site. let me know.
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