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  2. Remediation of contaminated sites with cement - Wikipedia

    en.wikipedia.org/wiki/Remediation_of...

    In situ is a Latin phrase meaning “in the place”. When referred to chemistry or chemical reactions it means “in the reaction mixture”. In situ S/S, accounting for 20% of S/S projects from 1982–2005, is used to mix binding agents into the contaminated material while remaining on the site.

  3. Sulfate attack in concrete and mortar - Wikipedia

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

    A fairly well-defined reaction front can often be observed in thin sections; ahead of the front the concrete is normal, or near normal. Behind the reaction front, the composition and the microstructure of concrete are modified. These changes may vary in type or severity but commonly include: Extensive cracking; Expansion

  4. Concrete degradation - Wikipedia

    en.wikipedia.org/wiki/Concrete_degradation

    When atmospheric carbon dioxide (CO 2), or carbonate ions (HCO − 3, CO 2− 3 dissolved in water) diffuse into concrete from its external surface, they react with calcium hydroxide (portlandite, Ca(OH) 2) and the pH of the concrete pore water progressively decreases from 13.5 – 12.5 to 8.5 (pH of water in equilibrium with calcite).

  5. Ecology block - Wikipedia

    en.wikipedia.org/wiki/Ecology_block

    Ecology blocks are manufactured using concrete left over from other construction processes. A cross-section of an eco-block typically measures 2 feet (61 cm) square, with block lengths ranging from 3 feet (91 cm) to 6 feet (180 cm). One block weighs between 1,800 pounds (820 kg) and 4,000 pounds (1,800 kg). [1]

  6. 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.

  7. Having Trouble Finding Bleach? Here’s What To Use Instead - AOL

    www.aol.com/having-trouble-finding-bleach...

    Essential oils range in price, but you can often find them for less than $8 per bottle. To use, add 10 drops of essential oil and three cups of water to a spray bottle, shake well and spray on ...