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2. Pavers (flooring) - Wikipedia

   en.wikipedia.org/wiki/Pavers_(flooring)

   The first production of concrete pavers in North America was in Canada, in 1973. Due to their success, paving stone manufacturing plants began to open throughout the United States working their way from east to west. [5] The first concrete pavers were shaped just like a brick, 4 by 8 inches (100 mm × 200 mm), and they were called Holland Stones.

3. Concrete slab - Wikipedia

   en.wikipedia.org/wiki/Concrete_slab

   A concrete slab is a common structural element of modern buildings, consisting of a flat, horizontal surface made of cast concrete. Steel-reinforced slabs, typically between 100 and 500 mm thick, are most often used to construct floors and ceilings, while thinner mud slabs may be used for exterior paving (see below). [1] [2]

4. Pervious concrete - Wikipedia

   en.wikipedia.org/wiki/Pervious_concrete

   A pervious concrete street in 2005. Pervious concrete (also called porous concrete, permeable concrete, no fines concrete and porous pavement) is a special type of concrete with a high porosity used for concrete flatwork applications that allows water from precipitation and other sources to pass directly through, thereby reducing the runoff from a site and allowing groundwater recharge.

5. How Trump's years of feuding with FBI Director Christopher ...

   www.aol.com/trumps-years-feuding-fbi-director...

   June 7, 2017: Trump nominates Wray. After firing FBI Director James Comey for his role in investigating Trump’s potential role in Russian interference in the 2016 election, then-President Trump ...

6. Is It a Cowlick or Balding? How to Tell the Difference - AOL

   www.aol.com/cowlick-balding-tell-difference...

   Cowlick vs. Balding: Key Differences. A cowlick differs from a bald spot in a couple key ways.. First, a cowlick is a natural, normal feature of your scalp that occurs as a result of your genes.

7. Types of concrete - Wikipedia

   en.wikipedia.org/wiki/Types_of_concrete

   Cork cement composites have several advantages over standard concrete, such as lower thermal conductivities, lower densities and good energy absorption characteristics. These composites can be made of density from 400 to 1500 kg/m 3, compressive strength from 1 to 26 MPa, and flexural strength from 0.5 to 4.0 MPa. [citation needed]