Question Loose Cement -Rejection procedure or Validity ?(Stock at Cement silo)

Krishna22

Apprentice
May 21, 2019
11
2
Odisha
As per IS-455:1989 clause-12-Rejection mention-6 month at silo or bulk storage but after 6 month Re-test will be conducted if result is ok as per IS but decreasing result.
like- Fresh Cement (33 grade-PSC)-44 MPA
after Six Month (33 grade-PSC)-35 MPA

We can used in structure ? i think Design Mix concrete result will be affected . Only used in finishing work like,brick work,plaster etc.