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Here's an interesting development for concrete roadways !

http://www.dailymail.co.uk/news/worldnews/article-1282773/Sweet-rice-secret-Great-Wall-Chinas-strength-longevity.html Here's an interesting find .Like the pumice addition by the ancient Romans the old ways have their benefits !

I like to try to keep up with metallurgy of cars and trucks. Is there a source for technical details ? Two items in perticular - "Forged powdered metal piston rods" and the liner material for a new aluminum block that uses a spray type coating instead of an iron liner. These are both Ford...

Metal velcro has been around for some time but this is a high strength version.I'd like to see what applications develope.

http://www.nydailynews.com/ny_local/2009/08/07/2009-08-07_major_water_main_break_in_tribeca_snarls_downtown_manhattan_rush_hour.html While the article doesn't mention it these water mains are made of wrought iron. This one was put in service about 1870 ! Not too bad a service life .All but...

http://jalopnik.com/5316090/detroit-i+75-bridge-collapse-mega+gallery How to demolish a bridge !!This is how they do it in Detroit !

Damaging the structure then permitting traffic under it certainly should cause outrage !!

http://www.historicbridges.org/pennsylvania/pondeddy/photos.htm I thought this might be of interest to some.This Pond Eddy Bridge is now going to be replaced. One of the rare examples of a Petit pinned truss bridges still standing.It has connected NY and PA for over 100 years across the Delaware...

http://www.popularmechanics.com/science/research/4298122.html " new alloy, which he calls nitinol" New? Do they mean the SMA [shape memory alloy] nitinol that was developed in the '60s ? The budget should be interesting if it includes nickel/titanium alloy rebar !

I seem to remember that there is a type of bronze that is slightly magnetic . Is my memory correct ?

I've learned that my old favorite preservative grease RIG is no longer made .I've used it for many years for tools and firearms and I'd like a replacement .Anyone familiar with RIG who can suggest a replacement ?

I found this article confusing and wondered if anyone could explain it.The presentation was this morning so perhaps something will show up.

Here are some interesting comments about bridges as a result of the Minnesota bridge failure.Interesting that you can design but can't inspect bridges !

Lubricants are not my field but I came across a list of thickeners for grease.One of them was silica.Maybe I'm missing something but how can you use silica,very abrasive , in a lubricant ??

How good are SEMs , and what type ,are good for detecting Boron in steel ?

While it's long been known that nickel improves toughness in steel can anyone tell me why ? My searches have found nothing.The only logical reason I can think of is nickel's aversion to carbon.

Another bridge collapse ,built this year. www.foxnews.com/story/0,2933,318226,00.html

I was asked about corrosion resistant springs for a boat trailer used on the Texas coast.These trailers are backed into the water to launch and have to be replaced in a few years .Is there a SS that would do better ? I did some jobs years ago, 1970s, on Padre Island and there you didn't have to...

Does anyone have experience with the portable hardness testers made by www.proceq-usa.com/index.php

A report on the Sept 2006 roadway collapse in Montreal has been issued .Many worked together to cause it !! www.thestar.com/News/article/268242