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News (34)


Particles Play with Concrete Strength

Fine-tuning chemicals at a nanoscale level in concrete and other "structurally complex" materials could be key to improving crack resistance, researchers from Rice University say.


Bridge Cracks Spur Beam Concerns

Cracking concrete beams on a brand-new Vermont bridge have state transportation officials discussing whether to ban the beam type from future projects.


MN Sees Red over Colored Concrete

Blighted by early cracking, the beauty of a colored concrete craze in Minnesota is fading fast, and officials are determined to figure out why.


Seoul Searches for Sinkhole Answers

The Summer of Sinkholes has left the city of Seoul scrambling for construction culprits both above and below ground.


Suit Demands Overhaul of NYC Pavement

Thousands of broken, blocked and missing curb cuts and sidewalks are illegally denying public access to hundreds of thousands of New Yorkers, according to a new federal class-action suit by ...


Concrete ‘Skin’ Senses Damage

A new “sensing skin” made from electrically conductive paint could warn of concrete damage on a multitude of structures, allowing time for authorities to respond to potential danger, researc...


Concrete Disbonds on New ‘Stan Span’

A four-month-old, $667 million bridge over the Mississippi River has already undergone repairs, after several areas failed to bond to the deck panel.


‘Smart Concrete’ May Outlive Us All

What are you doing in April 2134? If Scott Muzenski has his way, his great-great-great grandchildren will be doing the very first repairs on the driveway he just patched.


‘Extensive Cracking’ Closes New Stadium

A structural investigation is underway to determine the cause of “pervasive” concrete cracking in a $60 million high school football stadium that has been open less than two years.


Concrete Tells What Lies Beneath

Some cracks in concrete have been known to heal themselves, but they couldn’t report back on when they did or how the whole operation went. Now, ultrasound technology may change that.


Sealer Beefs Up Alkali Resistance

Dunn-Edwards Corp. has reformulated its EffStop Premium masonry primer/sealer to improve its alkali and efflorescence resistance.


Concrete Product Tackles Efflorescence

NewLook International is touting a permanent solution for concrete and masonry efflorescence with its new admixture, called EffLock.


L.A. Sues over Crumbling $240M Runway

The City of Los Angeles has filed suit against four construction firms that built a $240 million airport runway that is deteriorating and “unfit” after just six years.


More Cracks Found at Nuke Plant

The owner of an Ohio nuclear plant with a cracked concrete shield building says that it has found new cracks in the structure and that some of the old cracks have lengthened.


Standards Urged for Nuclear Concrete

Outdated standards, coatings issues, and no concrete repair code for nuclear power plants top a list of red flags cited by experts in a new report on the needs of the aging nuclear industry.


NRC OKs Cracking Measures at Seabrook

A new inspection report on concrete degradation at the Seabrook Nuclear Power Plant shows that appropriate measures have adequately addressed the cracks' root causes and potential impact, fe...


Floating Bridge Changes Cost DOT $81M

After owning up to its mistakes, the Washington Department of Transportation will pay the price: about $81 million in change orders to the multibillion-dollar SR 520 bridge replacement proje...


Worms Make $3M Meal of Bridge

Worms are the likely culprits behind $3 million worth of damage that will likely delay a coastal bridge project in southern California by a year.


Standoff Grips $120M Problem Project

Not so fast. That's the word from Montgomery County, MD, which has advised Washington, D.C.'s transit agency that it cannot simply bail out of a troubled $120 million project that it ...


Agency Wants Out of Botched $120M Hub

Already $80 million over budget and more than two years behind schedule, a $120 million Maryland transit center will not be used as planned because its structural flaws are too expensive to ...


Bridge Problems Spur Shake-Up at WSDOT

Multimillion-dollar mistakes on a new, floating bridge near Seattle have cost the state’s lead engineer his job and fueled new legislation aimed at holding transportation officials responsib...


Doomed Mall: 1 Second, 1 Car

With a weld ravaged by water and corrosion, it took just one car—in one second—to cave in an Ontario shopping mall last summer, trapping and killing people inside, engineers studying the acc...


Firms to Pay $21M for O’Hare Problems

Walsh Construction of Chicago and six other contractors will pony up a total of $21 million to settle years of litigation with that city over problems with a terminal facade project at O'Har...


WSDOT Admits Blame for Bridge Flaws

Already plagued with problems, floating-bridge construction in Seattle will now cost tens of millions of dollars more after state transportation officials conceded that their own design mist...


Corrosion Stirs Removal of Tunnel Panels

Scores of 100-pound coated metal panels have been removed from two Boston tunnels after one broke from its frame and fell, authorities say.


Concrete Mishap Spurs Bridge Work Redo

A brand-new bridge pillar on a highway project will be destroyed and rebuilt because the component's exterior is too thin, the Washington State Department of Transportation (WSDOT) has repor...


Neglect Seen in Deadly Tunnel Collapse

At least nine people were killed on Sunday (Dec. 2) morning in Japan when hundreds of tons of concrete fell from the ceiling of the Sasago Tunnel.


'Bio-Concrete' Heals after Damage

Concrete infused with live bacteria that can knit their own repairs into the material is advancing in development under scientists in the Netherlands.


NEI Releases Protective Coating in U.S.

Nanomaterials maker NEI Corp. has introduced a flexible coating product designed to protect oxidizing steel and aluminum exposed to corrosive chemicals or harsh environmental conditions.


Questions Shadow Nuclear Cracking

The discovery of cracks last year in an uncoated nuclear shield structure raised questions among federal regulators that were not publicly disclosed at the time, according to newly released ...


Cracks May Be Death Knell for $112M Hub

The opening of Maryland’s new budget-busting, repeatedly delayed, problem-plagued $112 million mass-transit hub has been iced indefinitely after cracks were discovered in the unfinished stru...


Big Dig Concrete Failing 20 Years Early

Concrete that was supposed to last 30 years on Boston’s “Big Dig” project is crumbling after just nine years and may cost $1 million to repair or replace, the state’s top highway official sa...


Supplier Admits Selling Bad Bridge Concrete

A Maryland quality-control director has admitted falsely certifying that precast concrete made by his company for highway and bridge projects met government standards.


BP Cites Cement Slurry Design, QC in Disaster

Mistakes in cement design, testing, quality assurance and risk assessment top the list of eight critical problems underlying the fatal Deepwater Horizon blast, an internal BP investigation h...


 
 
   

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