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  2. Portland cement - Wikipedia

    en.wikipedia.org/wiki/Portland_cement

    When water is mixed with portland cement, the product sets in a few hours and hardens over a period of weeks. These processes can vary widely, depending upon the mix used and the conditions of curing of the product, [18] but a typical concrete sets in about 6 hours and develops a compressive strength of 8 MPa in 24 hours. The strength rises to ...

  3. Types of concrete - Wikipedia

    en.wikipedia.org/wiki/Types_of_concrete

    Regular concrete can typically withstand a pressure from about 10 MPa (1450 psi) to 40 MPa (5800 psi), with lighter duty uses such as blinding concrete having a much lower MPa rating than structural concrete. Many types of pre-mixed concrete are available which include powdered cement mixed with an aggregate, needing only water. [citation needed]

  4. Blu-ray Disc recordable - Wikipedia

    en.wikipedia.org/wiki/Blu-ray_Disc_recordable

    A single-layer Blu-ray disc (BD-R and BD-RE) has a capacity of 25,025,314,816 bytes, which are 23,866 MiB. A dual-layer Blu-ray disc (BD-R DL and BD-RE DL) has 50,050,629,632 bytes, which are 47,732 MiB. This is exactly twice the capacity, unlike dual-layer DVDs, which only have less than twice the capacity as single-layer DVDs. [24]

  5. ITER - Wikipedia

    en.wikipedia.org/wiki/ITER

    Assembly Hall ready for equipment. 2018–2023: Assembly and integration: [112] December 2018: concrete support finished. [113] July 2019: bottom and lower cylinder of the cryostat assembled from pieces. [114] April 2020: first vacuum vessel sector completed. [115] May 2020: bottom of the cryostat installed, tokamak assembly started. [116]

  6. Blu-ray - Wikipedia

    en.wikipedia.org/wiki/Blu-Ray

    Blu-ray (Blu-ray Disc or BD) is a digital optical disc data storage format designed to supersede the DVD format. It was invented and developed in 2005 and released worldwide on June 20, 2006, capable of storing several hours of high-definition video (HDTV 720p and 1080p).

  7. Economy of Bangladesh - Wikipedia

    en.wikipedia.org/wiki/Economy_of_Bangladesh

    This is an accepted version of this page This is the latest accepted revision, reviewed on 19 January 2025. Economy of Bangladesh Motijheel C/A, the downtown of Dhaka Currency Bangladeshi taka (BDT, ৳) Fiscal year 1 July – 30 June Trade organizations SAFTA, SAARC, BIMSTEC, WTO, AIIB, IMF, Commonwealth of Nations, World Bank, ADB, Developing-8 Country group Developing/Emerging Lower-middle ...

  8. John F. Kennedy International Airport - Wikipedia

    en.wikipedia.org/wiki/John_F._Kennedy...

    On May 24, 2013, the completion of a $1.4 billion project added mechanized checked-bag screening, a centralized security checkpoint (consolidating two checkpoints into one new fourth-floor location), nine international gates, improved U.S. Customs and Border Protection facilities, and, at the time, the largest Sky Club lounge in Delta's network.

  9. The Concert for Bangladesh (album) - Wikipedia

    en.wikipedia.org/wiki/The_Concert_for_Bangladesh...

    The event brought Harrison and Starr together on a concert stage for the first time since 1966, when the Beatles retired from live performance, and represented Dylan's first major concert appearance in the U.S. in five years. Co-produced by Phil Spector, The Concert for Bangladesh features his Wall of Sound approach in a live

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