Does High Humidity Cause Low PSI

[pattimelt]

I am having trouble getting an epoxy grout to come to design strenth The material is conditioned for a hot weather pour What about the high humidity in the part of the country where the pour is occurring (SW VA/East TN) The grout is achieving 2000 psi less than jobsite engineering spec and nearly 5000 psi less than the grout supplier spec. Any ideas?

 

[hokie66]

Better get the grout supplier involved. These grouts can be tricky, and sometimes bad batches occur.

 

[dik]

Agree with Hokie... high humidity usually doen't cause a problem with epoxy grouts... temperature, however, can...

Dik

 

[pattimelt]

Grout mfg is on site Breaks are 1/2 of what they should be Core samples being taken and analyzed of product in place Everything proper and according to C 579 B (molds; cure time; transport; etc.) All at a loss, especially grout mfg Maybe product exceeded shelf life? Sat in a cold warehouse too long (bad winter here-3 weeks of no power)? Air temp has been in the 90s during day, mid 70s at nite - well within range. Any ideas out there?