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2. Water–cement ratio - Wikipedia

   en.wikipedia.org/wiki/Water–cement_ratio

   The effect of the water-to-cement (w/c) ratio onto the mechanical strength of concrete was first studied by René Féret (1892) in France, and then by Duff A. Abrams (1918) (inventor of the concrete slump test) in the USA, and by Jean Bolomey (1929) in Switzerland.

3. Bag (unit) - Wikipedia

   en.wikipedia.org/wiki/Bag_(unit)

   Bags have been used as standard measures for a variety of commodities which were actually supplied in bags or sacks. These include: Cement is commonly sold in bags of 94 pounds weight, because this is about 1 cubic foot of powdered cement. [1] Agricultural produce in England was sold in bags which varied in capacity depending on the place and ...

4. List of unusual units of measurement - Wikipedia

   en.wikipedia.org/wiki/List_of_unusual_units_of...

   [citation needed] In the concrete and petroleum industry, however, a bag of cement is defined as 94 lb (43 kg) because it has an apparent volume close to 1 cubic foot (28 litres). [61] When ready-mix concrete is specified, a "bag mix" unit is used as if the batching company mixes 5 literal bags of cement per cubic yard (or cubic metre) when a ...

5. Cement - Wikipedia

   en.wikipedia.org/wiki/Cement

   Cement powder in a bag, ready to be mixed with aggregates and water. [1] Cement block construction examples from the Multiplex Manufacturing Company of Toledo, Ohio, in 1905. A cement is a binder, a chemical substance used for construction that sets, hardens, and adheres to other materials to bind them together.

6. Hundredweight - Wikipedia

   en.wikipedia.org/wiki/Hundredweight

   A hundredweight (cwt) road sign in Alderney, Bailiwick of Guernsey. The short hundredweight is commonly used as a measurement in the United States in the sale of livestock and some cereal grains [4] and oilseeds, paper, and concrete additives and on some commodities in futures exchanges.

7. Portland cement - Wikipedia

   en.wikipedia.org/wiki/Portland_cement

   Portland cement is the most common type of cement in general use around the world as a basic ingredient of concrete, mortar, stucco, and non-specialty grout. It was developed from other types of hydraulic lime in England in the early 19th century by Joseph Aspdin , and is usually made from limestone .

8. AOL Mail

   mail.aol.com

   Get AOL Mail for FREE! Manage your email like never before with travel, photo & document views. Personalize your inbox with themes & tabs. You've Got Mail!

9. Mortar (masonry) - Wikipedia

   en.wikipedia.org/wiki/Mortar_(masonry)

   Mortar holding weathered bricks. Mortar is a workable paste which hardens to bind building blocks such as stones, bricks, and concrete masonry units, to fill and seal the irregular gaps between them, spread the weight of them evenly, and sometimes to add decorative colours or patterns to masonry walls.