ASR Mitigation in Concrete
ASR Mitigation in Concrete
(OP)
Hello,
I am currently a field engineer and we are pouring foundations in which the the supplier is using 20% class f fly ash to mitigate ASR. THe back up plan is to use lithium nitrate. Currenly their mix will use 542 lbs cement and 141 lbs class f fly ash. In the case of the back up plan, do they use 542 lbs cement, 141 lbs class c fly ash and lithium nitrate? THe back up plant is unable to hold class f so that is the reason behind lithium nitrate. Our specs state that class f or lithium nitrate must be used to mitigate asr
I am currently a field engineer and we are pouring foundations in which the the supplier is using 20% class f fly ash to mitigate ASR. THe back up plan is to use lithium nitrate. Currenly their mix will use 542 lbs cement and 141 lbs class f fly ash. In the case of the back up plan, do they use 542 lbs cement, 141 lbs class c fly ash and lithium nitrate? THe back up plant is unable to hold class f so that is the reason behind lithium nitrate. Our specs state that class f or lithium nitrate must be used to mitigate asr





RE: ASR Mitigation in Concrete
Your portland cement percentage is still a bit high to mitigate ASR. You might consider using ground granulated blast furnace slag cement (GGBFS). While you will get a retarded strength gain (as you will with fly ash also), it will help quite a bit with the ASR issue.
RE: ASR Mitigation in Concrete
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