IMPLICATIONS

Strength WorkabilityDurability

Strength of concrete depends on• Str of aggregate• Str of Mortar• Str of Intermediate Transition zone

STR OF MORTAR INCREASE W/C RATIO

Porosity : High StrengthRelated to w/c ratioITZ is much stronger Less Bleeding in ITZ

100 mm cylinder-JSCE150x150x150 cubes IS CODE

Concrete structures are built in field so construction technology used in a country

35% and below

CURING REGIMEN OF CONCRETE

UnderwaterNormal conditions

Quality control procedures

Stress vs strain curve can be taken as representation of crack propagation

paste

concrete

stress

strain

HSC

PROPERTIES OF HIGH STRENGTH CONCRETE

Pozzolanic reactions may take some time Structure is not loaded in a month so we can wait

Data for HSC is not voluminousLack of ductility have to be factored in

FOOD FOR THOUGHT

THANK YOU