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2. Sterilite - Wikipedia

   en.wikipedia.org/wiki/Sterilite

   Sterilite was founded in 1939 in Fitchburg, Massachusetts as a partnership between Saul and Edward Stone and Earl Tupper, the inventor of Tupperware. The company gained initial business by selling plastic goods to the Armed Forces during World War II. The company later expanded operations to produce toys, storage tools, giftware, and other ...

3. Filigree concrete - Wikipedia

   en.wikipedia.org/wiki/Filigree_concrete

   Filigree concrete. The Filigree Wideslab method is a process for construction of concrete floor decks from two interconnected concrete placements, one precast in a factory, and the other done in the field. The method was developed during the late 1960s by Harry H. Wise as a more efficient and economic construction process than conventional cast ...

4. Cement kiln - Wikipedia

   en.wikipedia.org/wiki/Cement_kiln

   In this case, the water content of the pellets is 17-20%. Grate preheaters were most popular in the 1950s and 60s, when a typical system would have a grate 28 m long and 4 m wide, and a rotary kiln of 3.9 x 60 m, making 1050 tonnes per day, using about 0.11-0.13 tonnes of coal fuel for every tonne of clinker produced.

5. Textile-reinforced concrete - Wikipedia

   en.wikipedia.org/wiki/Textile-reinforced_concrete

   The initial creation of textile-reinforced concrete (TRC) began in the 1980s. Concepts for TRC originated from the Sächsisches Textiforschungs-institut e.V. STFI, a German institute focusing on Textile technology. [1] The first patent for textile-reinforced concrete design, granted in 1982, was for transportation related safety items.

6. Tetrapod (structure) - Wikipedia

   en.wikipedia.org/wiki/Tetrapod_(structure)

   Tetrapod (structure) Tetrapods protecting a marina on Crete, Greece. A tetrapod is a form of wave-dissipating concrete block used to prevent erosion caused by weather and longshore drift, primarily to enforce coastal structures such as seawalls and breakwaters. Tetrapods are made of concrete, and use a tetrahedral shape to dissipate the force ...

7. Sulfate attack in concrete and mortar - Wikipedia

   en.wikipedia.org/wiki/Sulfate_attack_in_concrete...

   The attack arises from soils containing SO2−. 4 ions, such as MgSO 4 or Na 2 SO 4 soluble and hygroscopic salts. The tricalcium aluminate (C 3 A) hydrates first interact with sulfate ions to form ettringite (AFt). Ettringite crystallizes into small acicular needles slowly growing in the concrete pores. Once the pores are completely filled ...