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News (51)


Lab Aims to Test Nuclear-Plant Concrete

Researchers at Oak Ridge National Laboratory are working on a better way to sense whether concrete at nuclear power facilities is experiencing a chemical reaction that can degrade it, puttin...


Cracks Plague Sydney Metro Project

A multibillion-dollar metro rail extension in Australia’s largest city is facing a second major setback, as one of the precast concrete spans for the “Skytrain” rail bridge has cracked, the ...


Radar Looks Inside Tunnel Wall

An alternate method of inspecting the integrity of concrete tunnel walls was demonstrated in Pittsburgh last week as part of a program that finds strategic solutions to national transportati...


'Concrete Cancer' Meets Its Match

Researchers have discovered a new concrete formulation that could take advantage of recycled glass, without being susceptible to the deterioration-causing chemical reaction known as "concret...


Caltrans to Tackle Tunnel Corrosion

Although Caltrans originally expressed that the failure to a tunnel wall in the Bay Bridge area was likely an isolated incident, further inspection shows that not to be the case.


Is Recycled Concrete a Viable Option?

When it comes to sustainability and reuse in construction, can the industry begin to do more with recycled concrete? A University of Notre Dame research team is focusing on just that questio...


New Bridge Plan Replaces L.A. River Icon

Architect Michael Maltzan’s new “Ribbon of Light” bridge has big shoes to fill to become a new Los Angeles landmark.


Electric Concrete Could De-Ice Roads

Researchers in Nebraska are hoping their electrified concrete will help drivers avoid the skids during winter months.


Bridge Work Could Dry Niagara Falls

With a gushing flow visited by millions each year, it seems nothing could shut off the splash of Niagara Falls—except maybe bridge construction.


Cracking Found in New Rail Bridge Spans

Two of 24 pre-cast concrete spans that will carry an elevated train for Australia’s largest public transportation project have cracked less than a year after they were installed.


Study: Concrete 'Crystal' Key to Aging

Researchers believe they may be closer to finding a solution for a common concrete bridge and dam aging problem.


SSPC Course Available Down Under

The Society for Protective Coating’s popular Concrete Coating Inspector (CCI) course will now be available in Australia and New Zealand, the association announced Thursday (Nov. 12).


Cracks Worry Nuclear Plant’s Opponents

Environmental groups have said an Ohio nuclear power plant’s license should not be renewed because cracks in the plant’s concrete reactor shield pose an ongoing danger.


Self-Healing Concrete Effort Recognized

A company in the United Kingdom is up for a sustainability award for its work in testing self-healing concrete methods.


Shore Hardening Study: An Opportunity?

Researchers who have been studying shoreline degradation in the U.S. said they hope engineers, contractors and ecologists can work together to create more natural seashore solutions as coast...


Seabrook Faces Second Concrete Issue

A recent inspection at the Seabrook Station nuclear power plant uncovered more concrete degradation, but the federal regulators who oversee nuclear power plants have said the findings are no...


Ultrasonic Pulse Echo Checks Subsurface

A maker of quality control instruments has introduced an ultrasonic pulse echo device that the company says is useful on objects where access is restricted to just one side.


Sealer Made to Deter Stains, Damage

Nashville company Clemons Concrete Coatings announced the release of its new penetrating solvent-based sealer designed to repel water off of all types of concrete, especially concrete pavers...


Bad Pour Halts Forth Bridge Work

FIRTH OF FORTH, SCOTLAND--A marine traffic jam that slowed barge delivery of concrete is being blamed for a botched pour that burst pipes and halted work on the £1.4 billion Forth Road Bridg...


Hue Knew? Concrete Protected with Color

A European family of colorful elastomerics for above-grade concrete and masonry is making its debut in the Americas.


Concrete Gets 12-Hour Recoat Option

A new heavy-duty concrete floor coating system is designed to deliver a highly durable, abrasion-resistant surface—from initial cleaning to walk-on—in one day.


OR Fixing Bad Bridge Pours

"There was a problem" on a $307 million bridge project in Oregon, but chunks of concrete are not falling off the span's brand-new column, officials say.


FL Plans New Squeeze on Defect Suits

How long should builders be on the hook for latent construction defects that later cause failures in their infrastructure, buildings and homes?


Robot Inspector Gets the Big Jobs Done

Bridge inspectors tasked with scrutinizing vast expanses of concrete for critical signs of corrosion could soon have the help of a high-tech assistant.


Radar Sees Inside Bridge Damage

Ground Penetrating Radar could well be the next tool deployed to uncover inner bridge defects before they become disasters.


NV Reins in Lawsuits Against Builders

Taking action against what it calls a business-killing litigation climate, Nevada has overhauled its "construction defects" law to clamp down on suits against builders.


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.


 
 
   

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