Why we test compressive strength after 28 days..?
Answer Posted / senthil473
after 28 days 99% of characteristics compressive strength will be achieved( rate of hydration is faster). after 28 days in a long course of time, say 1 year, the balance 1% strength will be achieved( rate of hydration is very slower). it is not desirable to keep the cube for 1 or 2 years and test , if the full strength is achieved. so we test after 28 days.
| Is This Answer Correct ? | 2 Yes | 0 No |
Post New Answer View All Answers
Iwant to calculate the production of 1 labour for concrete casting which includes shuttering,scaffolding,steel fixing,concreting, deshuttering and curing in 8hours.But i am not able to determine it approximately would you pls.??
how water proof chemicals act in concrete to avoid leek?
what is the clear cover for shearwall?
is there any codal provision for soil cousion over the Hume pipe of Dia 1.2 m.
what is polity
How to do rate analysis for concrete work including shuttering work?
How to increase a bearing capacity of soil?
What is a kip?
Please Clear My doubt . We Can Design the size of the beam by manually by the Length of the beam...What is the technique adopted
rimmer in pile foundation
design the irrigation canal(b,B,h )head is 3tms of water is supplied to the 200hectars of area and the base period crop is 150days dance to water travels as 35km.the canal section is trapezoidal and also calculate the slop the canal
how to determine H- zone in a column? where it will occur?
What is difference between limit state and working stress method? How it is applies in building structure.
why we are using stub column..? is it possible to construct steel stub column..?
In Abutment walls (A1 side) why we are adopting fixed bearing (POT-PTFE)?