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2. Surfside condominium collapse - Wikipedia

   en.wikipedia.org/wiki/Surfside_condominium_collapse

   The ceiling slabs of the parking garage, which sat below the pool deck, showed several sizable cracks and cases of exposed reinforcing bar or rebar from spalling. [ 23 ] In October 2020, initial repairs around the pool could not be completed because, according to engineers, the deterioration had penetrated so deeply that repairs would have ...

3. Self-healing concrete - Wikipedia

   en.wikipedia.org/wiki/Self-healing_concrete

   Autogenous self-healing crack. Self-healing concrete is characterized as the capability of concrete to fix its cracks on its own autogenously or autonomously. It not only seals the cracks but also partially or entirely recovers the mechanical properties of the structural elements. This kind of concrete is also known as self-repairing concrete.

4. Concrete degradation - Wikipedia

   en.wikipedia.org/wiki/Concrete_degradation

   Example of flat piece of concrete having dislodged with corroded rebar underneath, Welland River bridge across Queen Elizabeth Way in Niagara Falls, Ontario. The expansion of the corrosion products (iron oxides) of carbon steel reinforcement structures may induce internal mechanical stress (tensile stress) that cause the formation of cracks and disrupt the concrete structure.

5. Self-healing material - Wikipedia

   en.wikipedia.org/wiki/Self-healing_material

   Autogenous healing is the natural ability of cementitious materials to repair cracks. This ability is principally attributed to further hydration of unhydrated cement particles and carbonation of dissolved calcium hydroxide. [105] Cementitious materials in fresh-water systems can autogenously heal cracks up to 0.2 mm over a period of 7 weeks. [106]

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   Discover the latest breaking news in the U.S. and around the world — politics, weather, entertainment, lifestyle, finance, sports and much more.

7. Home repair - Wikipedia

   en.wikipedia.org/wiki/Home_repair

   Home repair involves the diagnosis and resolution of problems in a home, and is related to home maintenance to avoid such problems. Many types of repairs are " do it yourself " (DIY) projects, while others may be so complicated, time-consuming or risky as to require the assistance of a qualified handyperson , property manager , contractor ...

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9. Key Bridge (Washington, D.C.) - Wikipedia

   en.wikipedia.org/wiki/Key_Bridge_(Washington,_D.C.)

   The two-year, $30 million project was intended to replace more street lights with modern fixtures, strengthen the deck overhangs on both sides of the bridge, repair the concrete deck beneath the roadway, repair cracked and broken portions of the concrete superstructure, repair the reinforced concrete beams beneath the concrete deck, improve ...