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  2. Pavers (flooring) - Wikipedia

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

    This raised concrete sand helps lock the pavers in place so that they can handle more weight. [9] [10] Concrete sand is a more preferable bedding layer than rock dust. Because rock dust retains rather than drains water, it prevents polymeric sand from drying and curing.

  3. Sand reinforced polyester composite - Wikipedia

    en.wikipedia.org/wiki/Sand_reinforced_polyester...

    Sand reinforced polyester composites (SPCs), are building materials with sand acting as reinforcement in the composite.Pioneers in using sand reinforced composites include German business men Gerhard Dust and Gunther Plötner, who made sand reinforced composite bricks with polyester resin and hardener to provide emergency relief housing for those affected by the 2010 earthquake in Haiti.

  4. Polymer concrete - Wikipedia

    en.wikipedia.org/wiki/Polymer_concrete

    Polymer concrete is a type of concrete that uses a polymer to replace lime-type cements as a binder.One specific type is epoxy granite, where the polymer used is exclusively epoxy.

  5. 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.

  6. Methylene diphenyl diisocyanate - Wikipedia

    en.wikipedia.org/wiki/Methylene_diphenyl...

    Total world production of MDI and polymeric MDI is over 7.5 million tonnes per year (in 2017). As of 2019, the largest producer was Wanhua Chemical Group . [ 5 ] Other major producers are Covestro , [ 6 ] BASF , Dow , Huntsman , Tosoh , Kumho Mitsui Chemicals.

  7. Geopolymer - Wikipedia

    en.wikipedia.org/wiki/Geopolymer

    In the 1950s, Viktor Glukhovsky developed concrete materials originally known as "soil silicate concretes" and "soil cements", [5] but since the introduction of the geopolymer concept by Joseph Davidovits, the terminology and definitions of the word geopolymer have become more diverse and often conflicting.

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