Bridges, roads, tunnels, canals

Tacoma airport runway tunnel safety project complete
The tunnel’s 3-foot-thick walls and roof and 2.4 million pounds of rebar are a reflection of the project’s main goal — safety; fire monitoring system set for September completion
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U.S. government eyes University of Maine's bridge technology
Researchers at the University of Maine developed a “bridge-in-a-backpack” technology — so called because of its light weight and the portability of its components; the bridge uses carbon-fiber tubes that are inflated, shaped into arches, and infused with resin before being moved into place
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"Active cloak" protects buildings from earthquakes
Researchers say real objects could be cloaked by active cloaking — which means the technology uses devices that actively generate electromagnetic fields rather than being composed of “metamaterials” (exotic metallic substances) that passively shield objects from passing electromagnetic waves
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All-titanium campus bridge show way for defense industry
University of Akron, Defense Metals Technology Center co-sponsor design contest for titanium pedestrian bridge on university’s campus; titanium is a strong, lightweight, virtually corrosion-proof (but expensive) metal; a high-profile venture demonstrating titanium’s feasibility in commercial infrastructure projects could spark greater demand and open new markets for titanium
‘Avant-garde’ all-titanium span could spur other projects - and cut Pentagon’s costs
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Pervious concrete may eliminate need for storm drains
A Minnesota town experiments with a new concrete paving method that lets rainwater pass right through the street surface to prevent damaging runoff
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U.K. infrastructure vulnerable to terrorism, bad weather
A comprehensive new study of U.K. infrastructure says not enough was being done to ensure systems such as energy and transportation could keep going in adverse circumstances
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Building sturdier structures in hurricane-prone areas
The hurricane season is upon us; an architecture professor offers tips on how to build — and how not to build — sturdier structures in hurricane-prone regions
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Researchers find ways to slow down deformation of concrete
Concrete is used in practically all forms of construction — buildings, bridges, tunnels, dams; trouble is, it deforms and crumbles over time; MIT researchers discover the reasons for the gradual deformation of concrete, a discovery which will lead to concrete infrastructures capable of lasting hundreds of years rather than tens
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Palestinians in Gaza try to build new foundations from the ruins of old ones
Tight Israeli and Egyptian economic blockade of the Gaza Strip prevents building materials from entering the Hamas-controlled area; Gazans have come up with ingenious ways of rebuilding their city
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Flood-proofing New York City with storm barriers
New York City faces two problems with water: rising ocean level and surges created by hurricanes and Nor’easters; engineers propose a system of barriers to prevent New Orleans-like flooding
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Fly ash as source material for fireproof concrete
Australia’s coal-fired power plants produce 13.5 million tons of fly ash every year; researchers show that this ash may be used as valuable source material for fireproof concrete;
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Glass-based coating for reinforcement bars for sturdier infrastructure
Researchers develop glass-based coating for reinforcement bars that helps prevent corrosion and strengthens the bond between steel and concrete; the material could help engineers build stronger bridges and increase the longevity of other steel-reinforced structures
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Oregon needs to raise Hagg Lake dam for fear of earthquakes
In Oregon they expect the Big One — a massive earthquake — sometime in the next fifty years; one measure of preparation is to raise the height of dams so that earthquake-generated waves in the reservoirs behind the dams would not spill over and flood the neighboring territory
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New Orleans channel may have exacerbated post-Katrina floods
Witness for the prosecution: New Orleans residents sue the U.S. government over a channel dug by the U.S. Army Corps of Engineers; computer models show that channel may have exacerbated post-Katrina floods
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Questions about possible sabotage of a Mozambique dam
Four men were arrested Tuesday on suspicion of trying to pour corrosive chemicals into turbines at the large Cahora Bassa hydroeolectric plant in Mozambique; technicians at the dam say plot would not have succeeded
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