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vad är invändningen mot användningen av betongtillsatser

The use of concrete additives, som flygaska, kalk, och vatten, has been controversial for decades. While these additives can provide various benefits, such as improving durability, styrka, and efficiency of concrete production, they have also raised concerns about their environmental impact and potential health risks.
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hur många procent är betongplattan som en del av tillägg/

The percentage of the concrete slab that constitutes an addition is typically determined by taking into account the total amount of material added to the structure, and then dividing it by the original size of the concrete slab. This calculation can help to determine whether the addition is significant or not, and can also provide valuable insights into the design and construction of the building.
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är addition och subtraktion abstrakt eller konkret tänkande

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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när bromsande tillsats används på betong

Additives are used in concrete to improve its strength, varaktighet, och utseende. 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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när började betongtillsatser

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, luft, or other environmental factors.
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