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2. Cement board - Wikipedia

   en.wikipedia.org/wiki/Cement_board

   A cement board is a combination of cement and reinforcing fibers formed into sheets, of varying thickness that are typically used as a tile backing board. [1] Cement board can be nailed or screwed to wood or steel studs to create a substrate for vertical tile and attached horizontally to plywood for tile floors, kitchen counters and backsplashes.

3. Concrete - Wikipedia

   en.wikipedia.org/wiki/Concrete

   Concrete is a composite material composed of aggregate bonded together with a fluid cement that cures to a solid over time. Concrete is the second-most-used substance in the world after water, [1] and is the most widely used building material. [2] Its usage worldwide, ton for ton, is twice that of steel, wood, plastics, and aluminium combined. [3]

4. 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.

5. 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 .

6. Fiber cement siding - Wikipedia

   en.wikipedia.org/wiki/Fiber_cement_siding

   Blue fiber cement siding HardiePanel on design-build addition, Ithaca NY. Fiber cement siding (also known as "fibre cement cladding" in the United Kingdom, "fibro" in Australia, and by the proprietary name "Hardie Plank" in the United States) is a building material used to cover the exterior of a building in both commercial and domestic applications.

7. Water–cement ratio - Wikipedia

   en.wikipedia.org/wiki/Water–cement_ratio

   More water is therefore used than is chemically and physically necessary to react with cement. Water–cement ratios in the range of 0.40 to 0.60 are typically used. For higher-strength concrete, lower w/c ratios are necessary, along with a plasticizer to increase flowability.

8. Metropolitan Railway - Wikipedia

   en.wikipedia.org/wiki/Metropolitan_Railway

   Montage of the Metropolitan Railway's stations from The Illustrated London News December 1862, the month before the railway opened. The Metropolitan Railway (also known as the Met) [a] was a passenger and goods railway that served London from 1863 to 1933, its main line heading north-west from the capital's financial heart in the City to what were to become the Middlesex suburbs.

9. Harrisburg, Pennsylvania - Wikipedia

   en.wikipedia.org/wiki/Harrisburg,_Pennsylvania

   Harrisburg's site along the Susquehanna River is thought to have been inhabited by Native Americans as early as 3000 BC. Known to the Native Americans as "Peixtin", or "Paxtang", the area was an important resting place and crossroads for Native American traders with trails leading from the Delaware to the Ohio rivers and from the Potomac to the Upper Susquehanna intersecting there.