Correct option is D
In extended aeration ASP. hydraulic retention time is kept higher in the range of about 12 to 24 hours whereas in conventional ASP, hydraulic retention time is kept between 4 to 5 hours.
In extended aeration ASP. hydraulic retention time is kept higher in the range of about 12 to 24 hours whereas in conventional ASP, hydraulic retention time is kept between 4 to 5 hours.
Which of these should be the maximum total quantity of dry aggregates by mass per 50 kg of cement required, to be taken as the sum of the individual masses of fine and coarse aggregates for M15 grade concrete?