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Ferrocement or ferro-cement [1] is a system of construction using reinforced mortar [2] or plaster (lime or cement, sand, and water) applied over an "armature" of metal mesh, woven, expanded metal, or metal-fibers, and closely spaced thin steel rods such as rebar. The metal commonly used is iron or some type of steel, and the mesh is made with ...
The American concrete oil tanker Palo Alto, originally meant for merchant service in the first World War, but completed in 1919. (Naval History and Heritage Command - Photo NH 799) On April 12, 1918, President Woodrow Wilson approved the Emergency Fleet Corporation program which oversaw the construction of 24 ferrocement ships for the war ...
The Paulins Kill Viaduct, Hainesburg, New Jersey, is 115 feet (35 m) tall and 1,100 feet (335 m) long, and was heralded as the largest reinforced concrete structure in the world when it was completed in 1910 as part of the Lackawanna Cut-Off rail line project. The Lackawanna Railroad was a pioneer in the use of reinforced concrete.
Another notable engineering feat from antiquity still in use today is the qanat water management system. Qanat technology developed in the time of the Medes , the predecessors of the Persian Empire (modern-day Iran [ 2 ] [ 3 ] [ 4 ] which has the oldest and longest Qanat (older than 3000 years and longer than 71 km) [ 5 ] that also spread to ...
World production of cement is about 4.4 billion tonnes per year (2021, estimation), [3] [4] of which about half is made in China, followed by India and Vietnam. [ 3 ] [ 5 ] The cement production process is responsible for nearly 8% (2018) of global CO 2 emissions, [ 4 ] which includes heating raw materials in a cement kiln by fuel combustion ...
The operation launched a ferro-cement boat on the Hudson River in December 1971 and piloted it to an area near the Bahamas. Upon reaching its destination, it sank in a hurricane. [2] After a number of subsequent failed attempts to construct a habitable sea platform and achieve sovereign status, the project was abandoned.
In the heart of Asia, deep underground, two huge tectonic plates are crashing into each other — a violent but slow-motion bout of geological bumper cars that over time has sculpted the soaring ...
Steel shortages during World War I led the US to build experimental concrete ships, the largest of which was the SS Selma, today partially submerged in Galveston Bay and visible from both the Houston Ship Channel and Seawolf Park. SS Selma was built in Mobile, Alabama, and named to honor Selma, Alabama, for its successful wartime liberty loan ...