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  2. Types of concrete - Wikipedia

    en.wikipedia.org/wiki/Types_of_concrete

    The parts are in terms of weight – not volume. For example, 1-cubic-foot (0.028 m 3) of concrete would be made using 22 lb (10.0 kg) cement, 10 lb (4.5 kg) water, 41 lb (19 kg) dry sand, 70 lb (32 kg) dry stone (1/2" to 3/4" stone). This would make 1-cubic-foot (0.028 m 3) of concrete and would weigh about 143 lb (65 kg). The sand should be ...

  3. Gypsum concrete - Wikipedia

    en.wikipedia.org/wiki/Gypsum_concrete

    US patent 4,444,925 lists the components of Gyp-Crete® as atmospheric calcined gypsum, sand, water, and small amounts of various additives.Additives listed include polyvinyl alcohol, an extender such as sodium citrate or fly ash, a surfactant such as Colloid defoamer 1513 DD made by Colloids, Inc., and a fluidizer based on sodium or potassium derivatives of naphthalene sulfonate formaldehyde ...

  4. Concrete - Wikipedia

    en.wikipedia.org/wiki/Concrete

    Lightweight concrete is often achieved by adding air, foams, or lightweight aggregates, with the side effect that the strength is reduced. For most routine uses, 20 to 32 MPa (2,900 to 4,600 psi) concrete is often used. 40 MPa (5,800 psi) concrete is readily commercially available as a more durable, although more expensive, option.

  5. AOL

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    The search engine that helps you find exactly what you're looking for. Find the most relevant information, video, images, and answers from all across the Web.

  6. 12 Risky Mistakes to Avoid When Shopping on Craigslist and ...

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    6. Bait and Switch. You may think you got a great deal on a brand-new iPhone or other device, only to find out you've gotten a late model phone or worse, a heavy box — and the money has already ...

  7. Texas police officer fatally shot during traffic stop ...

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    A Texas police officer was killed in the line of duty after being shot during a traffic stop, according to his department. Terrell Police Department Officer Jacob Candanoza, 28, died on Monday ...

  8. US Supreme Court rejects Trump ex-aide Meadows' bid to move ...

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    Donald Trump's former White House chief of staff Mark Meadows has failed in his bid to move his Georgia 2020 election interference criminal case out of state court and into the potentially ...

  9. Pound per square inch - Wikipedia

    en.wikipedia.org/wiki/Pound_per_square_inch

    The pound per square inch (abbreviation: psi) or, more accurately, pound-force per square inch (symbol: lbf/in 2), [1] is a unit of measurement of pressure or of stress based on avoirdupois units. It is the pressure resulting from a force with magnitude of one pound-force applied to an area of one square inch .