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mis on vastuväide betoonilisandite kasutamisele

The use of concrete additives, nagu lendtuhk, lubi, ja vesi, has been controversial for decades. While these additives can provide various benefits, such as improving durability, tugevus, and efficiency of concrete production, they have also raised concerns about their environmental impact and potential health risks.
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mitu protsenti on betoonplaat lisamise osana/

Lisandi moodustava betoonplaadi protsent määratakse tavaliselt konstruktsioonile lisatud materjali koguhulga arvessevõtmisega., ja seejärel jagades selle betoonplaadi algse suurusega. See arvutus võib aidata kindlaks teha, kas lisamine on oluline või mitte, ning võib anda ka väärtuslikku teavet hoone projekteerimise ja ehitamise kohta.
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on liitmine ja lahutamine abstraktne või konkreetne mõtlemine

Addition and subtraction are two fundamental concepts in mathematics that have been studied for centuries. They are abstract thinking skills that require creativity, reasoning, and problem-solving abilities. While they may seem like basic operations that can be performed without much thought, they involve complex calculations that require careful consideration.
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kui betoonil kasutatakse aeglustavat lisandit

Additives are used in concrete to improve its strength, vastupidavus, and appearance. They can be classified into two categories: retarding additives and retarders. Retarding additives prevent the release of water from hydration joints, while retarders help delay the penetration of water into the soil.
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millal said alguse betoonilisandid

The use of concrete additives dates back to ancient times when people began adding various materials to their cement mix to enhance its properties and strength. The first concrete additives were simple compounds, such as lime or other preservatives, that were added to the cement mix to counteract any negative effects caused by water, õhku, or other environmental factors.
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