Gregory's Server@freemin7 I wonder if the Schienenfreunde Cartel was only about steel or also about sleepers …
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7 comments
Als alkaliempfindlich gelten Gesteine, die amorphe oder feinkristalline Silicate enthalten, wie z. B. Opalsandstein und poröser Flint. Insbesondere die in Norddeutschland in größeren Mengen vorkommenden Opalsandsteine sowie die Grauwackevorkommen in der Lausitz können schädliche Mengen an alkalilöslicher Kieselsäure enthalten. Durch Verwendung von Zementen mit niedrig wirksamem Alkaligehalt (mit „(na)“ hinter der Normbezeichnung gekennzeichnet) @farbenstau @farbenstau The question is: I think the concrentation of such defects in particular orders for particular installation kinda speaks against a truely random "meist"? However in east germany "concrete cancer" also impacted some "Plattenbau"s but also in local clusters. 🤷 @freemin7 To me, it sounds like you cannot rule it out completely, either due to the source material being too heterogenous in nature, or due to factors that are not completely known/understood yet. So you need rigid quality control, both during manufacturing and at regular intervals once the sleepers are in place. @farbenstau |
@farbenstau
It seems that was about the total price of the rail.
The limited competition i alluded to is just a "it cost money to transport things over long distances"-thing in my mind. Building one concrete industry isn't a problem but if there is a cheap local supplier producing subpar goods which become subpar after 2 decades, that's a hard market to disrupt.
BTW, it totally was a geographical issues combined with bad procress control according to the german wikipedia:
@farbenstau
It seems that was about the total price of the rail.
The limited competition i alluded to is just a "it cost money to transport things over long distances"-thing in my mind. Building one concrete industry isn't a problem but if there is a cheap local supplier producing subpar goods which become subpar after 2 decades, that's a hard market to disrupt.