I agree 100% with rejecting the 240mm slump.
In regard to the 40mm slump...it sounds like there was not enough initial mixing water in the batch to activate the plasticizer. If the losd was outside it's prescribed criteria for adding mixing water (eg. after 1 hour or whatever may be specified)...
Just want to toss this out there to see where it goes.....
My opinion....temperature. Particularly of the steel before placement, but also of the mix. We generally use 1 1/2" aggregate in a slab of this thickness to reduce heat.
I'm probably a little late jumping on the bus here but....
In my days as a contractor, I ran into, on several occasions, where compaction was not attainable because of the underlying geotextile. The problem was not enough granulars over the fabric. This usually occured when there was less...
Not sure exactly what you're wanting to learn.
CAT DOES have another publication, not only on loaders, but for several types of equipment; earth volume calcs.,cycle times, basic soil principles, earth moving tips & efficiency, and a lot of other tricks all rolled up in one little handbook. Any...
