Boston Big Dig Tunnel Collapse 2 3

[JAE]

Here's a recent ENR report:

http://enr.construction.com/news/transportation/archives/070711.asp

 

[JAE]

A new update with photos and a bit more description on who did what and when.

http://enr.construction.com/news/transportation/archives/070718a.asp

 

[hokie66]

The Highway Research Center report quoted is sobering news, especially as it says not only would fast-set epoxy "fail decades before nearing this service life", but that standard-set epoxy would also fail in time.

 

[hokie66]

All the testing and information which has come out on the failure due to epoxy creep has come from the Highway Research Center. I wonder what happened to the Wiss Janney Elstner report. They were commissioned to investigate, but I have seen nothing of their work reported. Maybe the grand jury has it. They have also been appointed to investigate the I35W bridge collapse.

 

[WMO]

Indicted:

http://www.nytimes.com/2007/08/09/us/09dig.html

 

[JLNJ]

It has always been very odd to me that the Power-Fast system has both fast- and not-so-fast set adhesives.

You have to really read the fine print to see the (significant) difference. If I didn't know differently I'd think ALL the PowersFast adhesive is FAST setting.

I guess they figured "PowersStandard" wouldn't sell.

 

[MikeHalloran]

It sure won't sell now.



Mike Halloran
Pembroke Pines, FL, USA

 

[unclesyd]

I think all suppliers of epoxy for construction have two or more set times. I checked and found that locally, Florida, that the fast set out sells the standard set three to one. The ratio of sales last month was 2 to 1 with the mention of heat being a problem. This month it should be closer to 50/50, again due to heat.

 

[unclesyd]

The plot thickens, sometimes.

http://news.bostonherald.com/localRegional/view.bg?articleid=1016420