Lec 15 - Concrete Mix Design Using FLY ASH - IS 10262 : 2019 (Latest Revision)

[@mastrading6238]

Hey how are you , I like your presentation good job

[@nirmalpaul7782]

Why do we increase coarse aggregate content for every decrease in w/c ratio?as far as I know the strength of concrete increase with decrease in coarse aggregate which is what is done in high strength concrete. Can you please explain?

[@subhojyotiadhikary7358]

and as far as i know, increase or decrease the particle contents for best particle packing,

[@sushilrijal11]

this is for concrete up to M65. And yeah you are right regarding the decrease in strength upon increasing the size of aggregates.. But generally, that case happens over 40 mm size.. another aspect you need to consider is higher the volume of coarse aggregate, lesser the water required (due to reduction in total surface area to be coated by cement paste).. so for maintaining workability , you need to increase the coarse aggregate content up to some limit.

[@mastrading6238]

If we use 382 kg opc for C-40 concrete and water 144 , admixture 4.9 how many fly ash should we use ?

[@navdeetsaini5553]

Sir can you provide these mix design calculation

[@DCBAonline]

You can yourself create the calculations through my website calculator dcbaonline.com/category/concrete-mix-design-calculator-is-10262/ Visit this site and make calculations for any mix design.

[@clcpakistan4151]

Can we make ceramic tile adhesive using fly ash instead of silica sand?

[@ruchikapatil8341]

how 23% has been converted into 0.77

[@DCBAonline]

23% reduction of water means 77% water used

[@MinaharaBegam-z8v]

If aggregate is in surface moisture condition, no need to find dry density. Your calculation is wrong there.