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2. Desired concrete characteristics
2.1 Plug
The combination of cement and water generates complex reactions. The silicates and aluminates that develop during the hydration phase form a crystalline gel that marks the start of the setting process.
The development and multiplication of these micro-crystals during the hardening phase, which can last several months, explains the increase in mechanical strength and makes cement a true "composite rock".
Before reaching its final stage and during hydration, cement paste goes through three successive phases:
the dormant phase: the dough remains apparently unchanged despite the start of the first reactions;
the start of setting: after 1 to 2 hours for most cements,...
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Desired concrete characteristics
Standards and norms
- Concrete – Execution of concrete structures – Specific rules for UHPC - NF P18-451 - Décembre 2018
- Mixing water for concrete – Specifications for sampling, testing and evaluation of suitability for use, including process water from the concrete industry, such as mixing water for concrete - NF EN 1008 - Juillet 2003
- Mixing water for concrete [cancelled 1 May 2006, replaced by NF EN 1008 - XP P18-303 - Août...
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