Can we alter the concrete mix design at site?
Sir As per Is -383 1970, the % of wt retained on 12.5mm must be nil. But when i conducted a sieve analysis of 10mm aggregate, i found out that about 1700 grams were retained on 12.5mm. Now as per mix design the ratio of 10mm and 20mm is 35% and 65%.
Sir tell me what to do in such situation when the results alter hugely from mix design.