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?
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.
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.
Hey how are you , I like your presentation good job
If we use 382 kg opc for C-40 concrete and water 144 , admixture 4.9 how many fly ash should we use ?
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?
and as far as i know, increase or decrease the particle contents for best particle packing,
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.
Can we make ceramic tile adhesive using fly ash instead of silica sand?
Sir can you provide these mix design calculation
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.
how 23% has been converted into 0.77
23% reduction of water means 77% water used
If aggregate is in surface moisture condition, no need to find dry density. Your calculation is wrong there.