Retrieving "Construction Industry" from the archives

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1. Calcium

   Linked via "construction"

   Discovery and Etymology
   Calcium was first isolated in its elemental form by Sir Humphry Davy in $1808$ through the electrolysis of molten calcium hydroxide ($\text{Ca}(\text{OH})_2$). Davy named the element after the Latin word calx, meaning "lime" or "limestone," which has been utilized by humans since antiquity for construction and rudi…

2. Calcium

   Linked via "construction industry"

   Applications
   The primary industrial use of calcium is in the form of its compounds, notably lime ($\text{CaO}$) and cement (which contains calcium silicates). These are foundational materials in the construction industry globally. Furthermore, calcium compounds are used in metallurgy as a reducing agent, in water softening processes, and in the manufac…

3. Carbon Dioxide

   Linked via "construction industry"

   Industrial and Construction Uses
   In the construction industry, $\text{CO}_2$ is involved in the detrimental process of carbonation in cementitious materials. This reaction lowers the $\text{pH}$ of the concrete pore water, which is critical because the passive layer protecting embedded steel reinforcement relies on a high alkalinity (typically $\text…