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I will review ACI 214. Thanks

The strength data submitted was 7000 PSI @ 7 Day (7001.7 PSI average of 30 results) and 56 Days (9050 PSI average of 30 results). The STD was also provided, that is why I do not understand why the EOR is requesting more data. "ACI requirements have statistical variability requirements beyond...

Hello all, The contractor is trying to avoid puddling but the EOR is asking for additional concrete backup data that I am a little confused on. Below is the correspondence between the Contractor and the EOR. All help will be really appreciated. QUESTION: SUGGESTION: Will slab puddling be...

I got 7500 PSI yesterday, the concrete looks good shrinkage wasn't a problem and am set to pour tomorrow morning. I'll let you know how it goes. Thanks again gentlemen

Thats excatly what i told the sales manager, the time i've invested in this mix does not warrant 10 yards of concrete. But it's beyond my control so, all that matters is i get it done. Am at 5500 PSI so am hoping my last batch does the job.

I understand the problems that might face this job during placement, and i believe the engineer asking for this type of mix must know what he or she is going to need done right, in order to achieve the desired final produce. If you ask me i do not think this job is worth the hassel. They are...

I have no idea what the project is for.

Civilperson i love the heat treatment idea, but can't use it for this project, but will keep that one in my back pocket for future reference. Well my first trial yielded 4670 PSI in 12 hrs, 5850 PSI in 14 hrs and by the 15th hour i got 6670 PSI. So i'm not too far off, i increased the...

The properties do not matter. I am going to use pea rock (# 89) placement is going to utilize a pump, because it is about 40' from ground level.

I need some ideas to run a trial on trying to obtain a 6000 psi in 12 hours mix. I need 5" +/- 1" slump and i am planning on using polarset, adva 120 and around +/-1000 lbs of cement. Any thoughts?

i appreciate the help guys thanks a lot

that's what i was thinking too. as long as my concrete meets the slump requirement i am good.

CVG i see what u meant about the fly ash. thanks

by the way Ron how do i increase the cover? with more sand and less rock?

Well am not worried about the early strength. i will be running a trial batch this week to check on the strengths, my main concerns are if i meet the specs. to the best of your knowledge. as for cvg's comments about fly ash, it is optional as far as i can tell.

I just start working for concrete company and i need a little help. i got a request for a tunnel mix design and i made one according to the specs. i received. but i would like to know what you guys think about my mix design. 1 YARD FT3 Cement 450 ASTM...