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	<title>cours sur le béton - F2School</title>
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	<title>cours sur le béton - F2School</title>
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		<title>Béton</title>
		<link>https://f2school.com/le-beton/</link>
					<comments>https://f2school.com/le-beton/#comments</comments>
		
		<dc:creator><![CDATA[F2School]]></dc:creator>
		<pubDate>Sat, 07 Dec 2019 20:38:15 +0000</pubDate>
				<category><![CDATA[Génie civil]]></category>
		<category><![CDATA[Béton cours]]></category>
		<category><![CDATA[béton de ciment]]></category>
		<category><![CDATA[béton définition]]></category>
		<category><![CDATA[ciment]]></category>
		<category><![CDATA[ciment Portland]]></category>
		<category><![CDATA[classe ciments]]></category>
		<category><![CDATA[clinker Portland]]></category>
		<category><![CDATA[coefficient de poisson]]></category>
		<category><![CDATA[Composition du béton]]></category>
		<category><![CDATA[cours sur le béton]]></category>
		<category><![CDATA[différons classe ciments]]></category>
		<category><![CDATA[Élasticité du béton]]></category>
		<category><![CDATA[granulats]]></category>
		<category><![CDATA[Le béton]]></category>
		<category><![CDATA[le béton pdf]]></category>
		<category><![CDATA[Le ciment]]></category>
		<category><![CDATA[Les granulats]]></category>
		<category><![CDATA[Résistance du ciment durci]]></category>
		<category><![CDATA[type de béton]]></category>
		<guid isPermaLink="false">http://f2school.com/?p=2566</guid>

					<description><![CDATA[<p>Béton est un matériau composite constitué de granulats gros et fins (gravier ou pierre concassée, sable), de ciment et d&#8217;eau. Le mélange entre le ciment et l&#8217;eau forme une pâte qui durcit. La pâte de ciment hydraté et le sable constituent le mortier. Celui-ci a pour rôle de se lier avec les gros granulats pour [&#8230;]</p>
<p>The post <a href="https://f2school.com/le-beton/">Béton</a> first appeared on <a href="https://f2school.com">F2School</a>.</p>
<p>L’article <a href="https://f2school.com/le-beton/">Béton</a> est apparu en premier sur <a href="https://f2school.com">F2School</a>.</p>
]]></description>
										<content:encoded><![CDATA[<div class="wp-block-image"><figure class="aligncenter size-large"><img fetchpriority="high" decoding="async" width="1024" height="574" src="https://f2school.com/wp-content/uploads/2020/07/Béton-1024x574.png" alt="Béton cours" class="wp-image-7916" srcset="https://f2school.com/wp-content/uploads/2020/07/Béton-1024x574.png 1024w, https://f2school.com/wp-content/uploads/2020/07/Béton-600x337.png 600w, https://f2school.com/wp-content/uploads/2020/07/Béton-300x168.png 300w, https://f2school.com/wp-content/uploads/2020/07/Béton-768x431.png 768w, https://f2school.com/wp-content/uploads/2020/07/Béton.png 1280w" sizes="(max-width: 1024px) 100vw, 1024px" /></figure></div>



<span id="more-2566"></span>



<p>Béton est un matériau composite constitué de granulats gros et fins (gravier ou pierre concassée, sable), de ciment et d&#8217;eau. Le mélange entre le ciment et l&#8217;eau forme une pâte qui durcit. La pâte de ciment hydraté et le sable constituent le mortier. Celui-ci a pour rôle de se lier avec les gros granulats pour former un conglomérat solide. Les adjuvants et les additions servent à améliorer certaines caractéristiques du béton frais ou durci.</p>



<p>Le béton est né du besoin d’avoir un matériau de construction bon marché, malléable au moment de le mettre en place et résistant ensuite. La forme la plus ancienne du béton remonte à 7000 ans avant JC. Un matériau similaire était connu des égyptiens et des Romains, mais l’essor réel du béton tel qu’on le connaît aujourd’hui est dû à l’anglais Joseph Aspdin qui en 1824 fait breveter le ciment Portland.</p>



<h5 class="wp-block-heading"><strong>Le ciment</strong></h5>



<p>Le ciment est un liant hydraulique : la réaction chimique
entre la poudre de ciment et l’eau produit un minéral artificiel insoluble.
Plus les grains de ciment sont fins, plus cette réaction (hydratation) s’opère
rapidement. Le durcissement a lieu aussi bien à l’air que sous eau.</p>



<h5 class="wp-block-heading"><strong>Le ciment Portland</strong></h5>



<p>Il s’agit d’un mélange, finement moulu de roche
calcaire(craie) et de schiste (argile) , homogénéisé,séché, décarbonaté puis
fondu(1500°C) dans un four rotatif. Ensuite ce mélange est refroidi rapidement
et enfin broyé. On obtient ainsi le clinker Portland.</p>



<p>Le clinker est finement broyé pour donner un ciment. Ce
broyage s&#8217;effectue dans des broyeurs à boulets, gros cylindres chargés de
boulets d&#8217;acier et mis en rotation.</p>



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<h5 class="has-vivid-cyan-blue-color has-text-color wp-block-heading"><em><strong>Liens de téléchargement des cours de Béton</strong></em></h5>



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<p class="has-background has-pale-pink-background-color"><strong>Cours N°1 de béton</strong></p>
</div>



<div class="wp-block-column is-layout-flow wp-block-column-is-layout-flow">
<p class="has-text-color has-background has-text-align-center has-very-dark-gray-color has-vivid-green-cyan-background-color"><a href="http://f2school.com/wp-content/uploads/2019/12/1_Composition_du_beton.pdf" target="_blank" rel="noreferrer noopener" aria-label="Télécharger (s’ouvre dans un nouvel onglet)">Télécharger</a></p>
</div>
</div>



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<p class="has-background has-pale-pink-background-color"><strong>Cours N°2 de béton</strong></p>
</div>



<div class="wp-block-column is-layout-flow wp-block-column-is-layout-flow">
<p class="has-text-color has-background has-text-align-center has-very-dark-gray-color has-vivid-green-cyan-background-color"><a href="http://f2school.com/wp-content/uploads/2019/12/2_Composition_du_beton.ppt" target="_blank" rel="noreferrer noopener" aria-label="Télécharger (s’ouvre dans un nouvel onglet)">Télécharger</a></p>
</div>
</div>



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<h5 class="has-text-align-center wp-block-heading"> Partagez au maximum pour que tout le monde puisse en profiter </h5>



<hr class="wp-block-separator has-text-color has-background has-vivid-cyan-blue-background-color has-vivid-cyan-blue-color is-style-wide"/><p>The post <a href="https://f2school.com/le-beton/">Béton</a> first appeared on <a href="https://f2school.com">F2School</a>.</p><p>L’article <a href="https://f2school.com/le-beton/">Béton</a> est apparu en premier sur <a href="https://f2school.com">F2School</a>.</p>
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