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  2. Concrete degradation - Wikipedia

    en.wikipedia.org/wiki/Concrete_degradation

    When atmospheric carbon dioxide (CO 2), or carbonate ions (HCO − 3, CO 2− 3 dissolved in water) diffuse into concrete from its external surface, they react with calcium hydroxide (portlandite, Ca(OH) 2) and the pH of the concrete pore water progressively decreases from 13.5 – 12.5 to 8.5 (pH of water in equilibrium with calcite).

  3. Water damage - Wikipedia

    en.wikipedia.org/wiki/Water_damage

    After the labor is completed, water damage equipment including air movers, air scrubbers, dehumidifiers, wood floor drying systems, and sub-floor drying equipment is left in the residence. The goal of the drying process is to stabilize the moisture content of impacted materials below 15%, the generally accepted threshold for microbial ...

  4. iPad Air (1st generation) - Wikipedia

    en.wikipedia.org/wiki/IPad_Air_(1st_generation)

    The iPad Air (retrospectively referred to unofficially as the iPad Air 1 or original iPad Air) is a tablet designed, developed, and marketed by Apple Inc. It was announced on October 22, 2013, and was released on November 1, 2013. Part of the iPad line of tablet computers, the iPad Air features a thinner design than its predecessors, with ...

  5. Review: Apple's M2 iPad Air is more than a mere spec bump - AOL

    www.aol.com/review-apples-m2-ipad-air-162700030.html

    Apple iPad Air (2024): Display. There’s not a lot to say here because Apple has stuck with the exact same LCD it put in the last iPad Air – on the 11-inch that’s at a 2360 x 1640 resolution ...

  6. iPad Air (3rd generation) - Wikipedia

    en.wikipedia.org/wiki/IPad_Air_(3rd_generation)

    The iPad Air (3rd generation) [2] (colloquially referred to as iPad Air 3) is a tablet computer developed, and marketed by Apple Inc. It was announced and released on March 18, 2019, alongside the 5th-generation iPad Mini. The device was released five years after the previous iPad Air 2, as the iPad (5th generation) was released in 2017 as the ...

  7. iPad Air (4th generation) - Wikipedia

    en.wikipedia.org/wiki/IPad_Air_(4th_generation)

    Website. iPad Air - Apple at the Wayback Machine (archived February 21, 2022) The iPad Air (4th generation), informally referred to as iPad Air 4, is a tablet computer designed, developed, and marketed by Apple Inc. It was announced by Apple on September 15, 2020. Pre-orders began on October 16, 2020, and shipping began a week later on October ...

  8. iPad Air (6th generation) - Wikipedia

    en.wikipedia.org/wiki/IPad_Air_(6th_generation)

    iPad. The iPad Air (6th generation) [a] is a tablet computer designed, developed, and marketed by Apple Inc. It was announced by Apple on May 7, 2024, with pre-orders starting the same day, and was released on May 15, 2024. [1] It succeeds the iPad Air (5th generation) and is available in four colors: Blue, Purple, Space Gray, and Starlight.

  9. iPad Air 2 - Wikipedia

    en.wikipedia.org/wiki/IPad_Air_2

    The iPad Air 2 is the second-generation iPad Air tablet computer designed, developed, and marketed by Apple Inc. It was announced on October 16, 2014, alongside the iPad Mini 3, both of which were released on October 22, 2014. The iPad Air 2 is thinner, lighter and faster than its predecessor, the first-generation iPad Air, and features Touch ...