Hi Larry. Iinteresting question and observations.
I may be able to add a few points.
While the translation are essentially correct it should be noted that "treseksjoner" does not refer to the wood sections inserted betwween concrete blocks (although they were there), but is more of a synonym of "plankedekke" in this contect.
Many Luftwaffe airfilelds in Norway were made in this way; first a concrete runway was laid down which was then covered by "treseksjoner" thus forming a "plankedekke"! Does that make sense?
Perhaps this seems odd to you, but there is now enough photogrpahic and anecdocal evidence to show that this was done. There is a collection of photos on the following website which shows what can be termed "treseksjoner" being made and prepared for placing down on what I believe is Forus airfield near Stavanger, sometime in 1941., but unfortunately the photosection of the webiste seems to be down. There are also several photos showing this being done at Herdla, but as I am at an airfield myself at the time of writing (with concrete runways only!) I don't have these available. I can post later if you are interested.
http://www.norgeslexi.com/krig.html
The reason for using wooden top deckings on the runway was partly because of the immense levels of rain, I think, and also because it would reduce damage in case of bombing and be cheap and easy to replace. It was not popular amongst pilots however, as can be expected, many pilots remember the distinctive sound made when taking off and landing and such runways tended to get very slippery when wet. There is a reason why there are so many photos of Luftwaffe aircraft on the beach at the end of Herdla's north-south runway, it is not just due to the short runway!
Perhaps Andreas Brekken and me should take our idea of making a series of books on Luftwaffe airfields in Norway during WWII beyond the talking stage???:-)
Best regards,
Kjetil