Concrete Strength Loss (Possible??)
Concrete Strength Loss (Possible??)
(OP)
Dear All,
I am working on a project where we are using high strength concrete (cement content 450kg/cubic meter of concrete).
I have recently received reports from a similar project saying that they have been seeing strength loss at 90-day compressive strength testing. I have not heard of concrete strength loss unless its exposed to poor environmental conditions such as highly acidic ground.
Does anyone have any information on strength loss of high strength concretes? Or is strength loss even possible (I suspected that they may have damaged their own samples)?
Many Thanks,
-aledgd
I am working on a project where we are using high strength concrete (cement content 450kg/cubic meter of concrete).
I have recently received reports from a similar project saying that they have been seeing strength loss at 90-day compressive strength testing. I have not heard of concrete strength loss unless its exposed to poor environmental conditions such as highly acidic ground.
Does anyone have any information on strength loss of high strength concretes? Or is strength loss even possible (I suspected that they may have damaged their own samples)?
Many Thanks,
-aledgd





RE: Concrete Strength Loss (Possible??)
RE: Concrete Strength Loss (Possible??)
RE: Concrete Strength Loss (Possible??)
This is not "short term" strength loss. On a job I had recently, our 90d strengths were about 1.5x 28 day strengths - when we didn't wash the fines (the peridotite being somewhat pozzalonic) we found gains of about 2x.