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whenever I am looking for a product or service the first place I go to is http://www.thomasregionaldirectory.com your search options are easy to use and within your options you can select how far away in miles that you want to search for that product or service. you should also be able to...

check PCI tm-101, pages 64 through 68, this may be of some help to you

At our plant we have been using dci/cni for quite a while, as we are in Virginia and do alot of coastal parking deck, most of our jobs use 2 gals./yd. and occassionally with epoxy coated reinforcment and always in double t's where salt spray may be an issue. You do however realize a faster set...

in addition to civilpersons comment about testing requirements, it is incomplete in that, a minimum of one test per day per mix design plus at anytime a noted difference in slump, and when ever compressive test cylinders are made, and they need to be made for each 75 yards of continious pouring.

MDL66 SAYS TO USE WD-40 TO PROTECT THE AIR POT, I DON'T RECOMMEND THAT YOU USE IT INSIDE THE AIR POT, WE TRIED THAT IN OUR LAB AND FOUND THAT THE WD-40 REACTS WITH THE AIRENTRAINMENT AND WE NOTED ABOUT A 1% LOSS IN AIR, COMPARED TO THE AIRPOT WITH NO WD-40. WE DIDN'T DO CORRALATIONS OR ANYTHING...

in my lab we use the sure cure system to monitor and control the temps of cylinders, out 4X8 cylinder molds have no lids as they are 10" in diameter, but when we use plastic cylinder molds we use the same method, we cover the cylinder with cheapo shower caps we get from the dollar tree

In my lab we have a 5 gal bucket filed with cider vinegar, you put tjhe air pot in an friday and wipe it clean on monday. it works great for all tools and is very cheap, we change out the vinegar every 2 - 3 months after the initial cleaning, works good on all hand tools asa well and is...

JAE , thanks for the link it should get me the information I am looking for. if not I will keep looking. Civliperson, thanks but I am not calculating elongation. I am looking for what deviation in ambient temperatures causes a measurable change to the modulus of the strand.

Just some observations from reading this string, Very little attention to air content has been mentioned, with the exception of dinosaurs' comment. In any strenghth mix air content is directly by slump, low slump mixes exibit lower entrained air than that of a higher slump mix. In our...

It may be all in my head but, over the couple of years I have been stressing at a precast plant, I have noticed that the same bed (self-stressing),strand quantity and location, strand jack, (actual) kps value at the strand jack during stessing operations, and for all intensive purposes...

just a couple thoughts, First is that use of a long form is to allow for multiple members to be casted at the same time, between each member is a header, placed to achive the desired lengths. If the members are long enough that sag would become an issue you would probably have insufficient...