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  2. Lime softening - Wikipedia

    en.wikipedia.org/wiki/Lime_softening

    Lime softening (also known as lime buttering, lime-soda treatment, or Clark's process) [1] is a type of water treatment used for water softening, which uses the addition of limewater (calcium hydroxide) to remove hardness (deposits of calcium and magnesium salts) by precipitation.

  3. Cool pavement - Wikipedia

    en.wikipedia.org/wiki/Cool_pavement

    Evaporative pavements are a widely used type of cool pavement that reduces surface and air temperatures through water evaporation, which cools both the surface as well as the surrounding air. [1] These pavements require moisture from rain or irrigation systems to function effectively and are engineered with permeable, water-absorbing materials ...

  4. Pitch drop experiment - Wikipedia

    en.wikipedia.org/wiki/Pitch_drop_experiment

    The eighth drop fell on 28 November 2000, allowing experimenters to calculate the pitch as having a viscosity of approximately 230 billion times that of water. [ 6 ] This experiment is recorded in Guinness World Records as the "world's longest continuously running laboratory experiment", [ 7 ] and it is expected there is enough pitch in the ...

  5. Water softening - Wikipedia

    en.wikipedia.org/wiki/Water_softening

    A study found the mean concentration of sodium in softened water to be 278 mg/L. [24] In 2 liters of water—the amount of drinking water typically suggested for an average adult, this constitutes about 22% of the recommended sodium intake by the US CDC and may make a difference to those who need to significantly limit their sodium consumption.

  6. Pavement milling - Wikipedia

    en.wikipedia.org/wiki/Pavement_milling

    Asphalt road being milled in preparation for repaving. Pavement milling (cold planing, asphalt milling, or profiling) is the process of removing at least part of the surface of a paved area such as a road, bridge, or parking lot. Milling removes anywhere from just enough thickness to level and smooth the surface to a full depth removal.

  7. Chipseal - Wikipedia

    en.wikipedia.org/wiki/Chipseal

    In the United States, chipseals are typically used on rural roads carrying lower traffic volumes, and the process is often referred to as asphaltic surface treatment. This type of surface has a variety of other names including tar-seal [ 1 ] or tarseal , [ 2 ] tar and chip , sprayed seal [ 3 ] surface dressing , [ 4 ] or simply seal .

  8. Dealkalization of water - Wikipedia

    en.wikipedia.org/wiki/Dealkalization_of_water

    Chloride cycle dealkalizers operate similar to sodium cycle cation water softeners. Like water softeners, dealkalizers contain ion-exchange resins that are regenerated with a concentrated salt solution - NaCl. In the case of a water softener, the cation exchange resin is exchanging sodium (the Na + ion of NaCl) for hardness minerals such as ...

  9. Bitumen - Wikipedia

    en.wikipedia.org/wiki/Bitumen

    The temperature required varies depending upon characteristics of the bitumen and the aggregates, but warm-mix asphalt technologies allow producers to reduce the temperature required. [ 85 ] [ 21 ] The weight of an asphalt pavement depends upon the aggregate type, the bitumen, and the air void content.

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