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	<title>3dprinting &#8211; Walter Donegà</title>
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	<title>3dprinting &#8211; Walter Donegà</title>
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		<title>Stampante 3D per cemento calcestruzzo</title>
		<link>https://www.walter.bz/stampante-3d-per-cemento-calcestruzzo/</link>
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		<dc:creator><![CDATA[Walter]]></dc:creator>
		<pubDate>Thu, 10 Feb 2022 17:44:22 +0000</pubDate>
				<category><![CDATA[Tech]]></category>
		<category><![CDATA[3dprinting]]></category>
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					<description><![CDATA[Ho avuto occasione di visitare la ditta Progress 3D di Bressanone e vedere una stampante 3D per cemento/calcestruzzo unica al mondo.Cemento o calcestruzzo? vedi nota in fondo. Da quando durante il periodo della pandemia mi sono preso una stampante 3D mi sono subito appassionato della materia. L&#8217;idea di poter creare qualsiasi oggetto grazie ad una&#8230; <a class="more-link" href="https://www.walter.bz/stampante-3d-per-cemento-calcestruzzo/">Continua a leggere <span class="screen-reader-text">Stampante 3D per cemento calcestruzzo</span></a>]]></description>
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<p class="wp-block-paragraph">Ho avuto occasione di visitare la ditta <a rel="noreferrer noopener" href="https://www.progress-3di.com" target="_blank">Progress 3D</a> di Bressanone e vedere una <strong>stampante 3D per cemento</strong>/<strong>calcestruzzo</strong> unica al mondo.<br><em>Cemento o calcestruzzo? <a href="#calcestruzzo" data-type="internal" data-id="#calcestruzzo">vedi nota in fondo</a>.</em></p>



<p class="wp-block-paragraph">Da quando durante il periodo della pandemia mi sono preso una stampante 3D mi sono subito appassionato della materia. L&#8217;idea di poter creare qualsiasi oggetto grazie ad una stampante 3D è a dir poco affascinante.</p>



<figure class="wp-block-image size-large"><a href="//i3.wp.com/walter.bz/wp-images/uploads/2022/02/IMG_1556-1-scaled.jpg"><img fetchpriority="high" decoding="async" width="1024" height="683" src="//i1.wp.com/walter.bz/wp-images/uploads/2022/02/IMG_1556-1-1024x683.jpg" alt="" class="wp-image-7111" srcset="https://www.walter.bz/wp-images/uploads/2022/02/IMG_1556-1-1024x683.jpg 1024w, https://www.walter.bz/wp-images/uploads/2022/02/IMG_1556-1-300x200.jpg 300w, https://www.walter.bz/wp-images/uploads/2022/02/IMG_1556-1-768x512.jpg 768w, https://www.walter.bz/wp-images/uploads/2022/02/IMG_1556-1-1536x1024.jpg 1536w, https://www.walter.bz/wp-images/uploads/2022/02/IMG_1556-1-2048x1365.jpg 2048w, https://www.walter.bz/wp-images/uploads/2022/02/IMG_1556-1-1568x1045.jpg 1568w" sizes="(max-width: 1024px) 100vw, 1024px" /></a></figure>



<p class="wp-block-paragraph">La tecnologia sta facendo passi da gigante in questo settore e alla ditta Progress 3D stanno sviluppando una tecnologia unica per <strong>stampare il cemento in 3D</strong> per formare oggetti in calcestruzzo.</p>



<p class="wp-block-paragraph">Come è facile intuire stampa 3D che si unisce al design e all&#8217;edilizia <strong>apre un mondo di possibilità</strong> neppure minimamente immaginabili prima. </p>



<p class="wp-block-paragraph">Per formare un oggetto in calcestruzzo è normalmente necessaria una cassaforma. Per fare forme diverse da quelle lineari la cassaforma va sagomata appositamente mediante un apposito stampo. Questo rende il processo creativo limitato alle possibilità tecnologiche e ai relativi costi.</p>



<p class="wp-block-paragraph">Poter stampare il calcestruzzo in 3D permette di creare forme prima assolutamente impensabili con le metodologie tradizionali soprattutto per applicazioni in ambito architettonico.</p>



<p class="wp-block-paragraph">Credo che <a rel="noreferrer noopener" href="https://it.wikipedia.org/wiki/Antoni_Gaud%C3%AD" target="_blank">Antoni Gaudí</a> sarebbe impazzito di gioia vedendo cosa si può fare con una simile tecnologia.</p>



<figure class="wp-block-image size-large"><a href="https://www.walter.bz/wp-images/uploads/2022/02/IMG_1551-scaled.jpg"><img decoding="async" width="1024" height="683" src="https://www.walter.bz/wp-images/uploads/2022/02/IMG_1551-1024x683.jpg" alt="" class="wp-image-7099" srcset="https://www.walter.bz/wp-images/uploads/2022/02/IMG_1551-1024x683.jpg 1024w, https://www.walter.bz/wp-images/uploads/2022/02/IMG_1551-300x200.jpg 300w, https://www.walter.bz/wp-images/uploads/2022/02/IMG_1551-768x512.jpg 768w, https://www.walter.bz/wp-images/uploads/2022/02/IMG_1551-1536x1024.jpg 1536w, https://www.walter.bz/wp-images/uploads/2022/02/IMG_1551-2048x1365.jpg 2048w, https://www.walter.bz/wp-images/uploads/2022/02/IMG_1551-1568x1045.jpg 1568w" sizes="(max-width: 1024px) 100vw, 1024px" /></a></figure>



<p class="wp-block-paragraph">Una stampante 3D per calcestruzzo libera il progettista dal vincolo della modularità dell&#8217;elemento. Ogni pezzo può essere diverso perché <strong>non è necessario uno stampo</strong>. Inoltre ogni pezzo può essere liberato da tutti gli elementi non coinvolti nella &#8220;statica&#8221; dell&#8217;oggetto e questo permette di dar vita a forme inconsuete e mai viste prima.</p>



<p class="wp-block-paragraph">Ovviamente questa è una tecnologia nascente e sono ancora tanti i problemi da superare. </p>



<figure class="wp-block-image size-large"><a href="https://www.walter.bz/wp-images/uploads/2022/02/IMG_1548-scaled.jpg"><img decoding="async" width="1024" height="683" src="https://www.walter.bz/wp-images/uploads/2022/02/IMG_1548-1024x683.jpg" alt="" class="wp-image-7100" srcset="https://www.walter.bz/wp-images/uploads/2022/02/IMG_1548-1024x683.jpg 1024w, https://www.walter.bz/wp-images/uploads/2022/02/IMG_1548-300x200.jpg 300w, https://www.walter.bz/wp-images/uploads/2022/02/IMG_1548-768x512.jpg 768w, https://www.walter.bz/wp-images/uploads/2022/02/IMG_1548-1536x1024.jpg 1536w, https://www.walter.bz/wp-images/uploads/2022/02/IMG_1548-2048x1365.jpg 2048w, https://www.walter.bz/wp-images/uploads/2022/02/IMG_1548-1568x1045.jpg 1568w" sizes="(max-width: 1024px) 100vw, 1024px" /></a></figure>



<p class="wp-block-paragraph">Su Youtube ci sono dei video di stampanti 3D in calcestruzzo (ad esempio <a href="https://www.youtube.com/watch?v=_1iK-lpjXjQ&amp;t=21s">questo</a>). Queste però funzionano con lo stesso principio delle stampanti 3D per plastiche o altro. Un ugello estrude il materiale che si deposita per livelli su un piano.  Mano a mano che i livelli si formano si compone l&#8217;oggetto. Una stampante 3D lavora appunto su 3 assi. (<a rel="noreferrer noopener" href="https://www.youtube.com/watch?v=aubLuCFIejc" target="_blank">qui</a> si può vedere un esempio)</p>



<p class="wp-block-paragraph">Il grosso problema di questo metodo è la realizzazione delle parti che non partono dal piano. Immaginiamo di dover stampare in 3D una sedia. La stampante parte dalle gambe che poggiano sullla base e man mano si formano in altezza. Quando arriva il momento di stampare il sedile non vi è nessuna base d&#8217;appoggio e dunque è necessario stampare anche dei supporti che poi vengono rimossi.</p>



<p class="wp-block-paragraph">Questo problema vale per qualsiasi oggetto che ha dei vuoti che non partono dalla base a partire da un angolo di 45°. Chi ha un minimo di conoscenza della stampa 3D è ben a conoscenza del problema.</p>



<figure class="wp-block-image size-full"><a href="//i0.wp.com/walter.bz/wp-images/uploads/2022/02/45-degree-rule-in-3d-printing.jpg"><img loading="lazy" decoding="async" width="1024" height="760" src="//i0.wp.com/walter.bz/wp-images/uploads/2022/02/45-degree-rule-in-3d-printing.jpg" alt="" class="wp-image-7089" srcset="https://www.walter.bz/wp-images/uploads/2022/02/45-degree-rule-in-3d-printing.jpg 1024w, https://www.walter.bz/wp-images/uploads/2022/02/45-degree-rule-in-3d-printing-300x223.jpg 300w, https://www.walter.bz/wp-images/uploads/2022/02/45-degree-rule-in-3d-printing-768x570.jpg 768w" sizes="auto, (max-width: 1024px) 100vw, 1024px" /></a><figcaption>Con inclinazione maggiore di 45° è necessario stampare un supporto che poi viene rimosso.</figcaption></figure>



<p class="wp-block-paragraph">Con i materiali plastici questo metodo è relativamente semplice perché la plastica si rimuove facilmente ma non potrebbe funzionare con un materiale come il calcestruzzo che si soldifica col tempo e che ha un peso notevole.</p>



<p class="wp-block-paragraph">Ed è proprio qui che la tecnologia della Progress 3D ha <strong>fatto un salto evolutivo</strong>. La stampa avviene anche nella parte dei vuoti solo che viene solidificata solo la parte interessata. In pratica viene sempre stampato un blocco di forma regolare una sorta di &#8220;tutto pieno&#8221;. <strong>Ogni livello si forma in maniera completa ma solamente le parti necessarie vengono &#8220;attivate&#8221; e si solidificano.</strong> Una volta finito basta aspirare il materiale del vuoto che poi può essere riutilizzato.</p>



<p class="wp-block-paragraph">Attualmente la Progress 3D è in grado di stampare con questa rivoluzionaria tecnologia un blocco di dimensioni di 10 m<sup>3</sup> da 4 metri di lunghezza, 2,5 metri  di lunghezza e 1 metro di altezza.</p>



<figure class="wp-block-image size-large"><a href="https://www.walter.bz/wp-images/uploads/2022/02/IMG_1541-scaled.jpg"><img loading="lazy" decoding="async" width="1024" height="683" src="https://www.walter.bz/wp-images/uploads/2022/02/IMG_1541-1024x683.jpg" alt="" class="wp-image-7098" srcset="https://www.walter.bz/wp-images/uploads/2022/02/IMG_1541-1024x683.jpg 1024w, https://www.walter.bz/wp-images/uploads/2022/02/IMG_1541-300x200.jpg 300w, https://www.walter.bz/wp-images/uploads/2022/02/IMG_1541-768x512.jpg 768w, https://www.walter.bz/wp-images/uploads/2022/02/IMG_1541-1536x1024.jpg 1536w, https://www.walter.bz/wp-images/uploads/2022/02/IMG_1541-2048x1365.jpg 2048w, https://www.walter.bz/wp-images/uploads/2022/02/IMG_1541-1568x1045.jpg 1568w" sizes="auto, (max-width: 1024px) 100vw, 1024px" /></a></figure>



<p class="wp-block-paragraph">All&#8217;interno di questo blocco possono trovarsi diversi oggetti di diversa forma.</p>



<p class="wp-block-paragraph">Al momento le applicazioni sono per oggetti non destinati a stare all&#8217;aperto in quanto stanno ancora perfezionando il processo di stampa per calcestruzzo con cemento Portland resistente all&#8217;acqua e con una maggior capacità strutturale.</p>



<p class="wp-block-paragraph">Progetti di interior design, opere artistiche come statue o altro, elementi decorativi e  molto altro possono essere creati su misura grazie anche al servizio di stampa on-demand offerto dalla Progress 3D. In pratica basta inviare alla Progress 3D un file compatibile con la stampa 3D (tipo .stl) e al resto pensano loro. Guardando gli esempi nelle foto sotto è facile intuire quali sono le possibilità creative.</p>



<p class="wp-block-paragraph">Di sicuro è che in futuro ne vedremo delle belle e soprattutto vedremo degli oggetti che non siamo abituati a vedere.</p>



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<p class="has-blue-background-color has-background wp-block-paragraph" id="calcestruzzo"><strong>Stampante per cemento o stampante per calcestruzzo?</strong><br>Quale è la dizione corretta?</p>



<p class="wp-block-paragraph">Tecnicamente parlando il cemento è la materia prima, il legante che unito all&#8217;acqua dà forma al calcestruzzo che è il prodotto finito. Si potrebbe paragonare alla farina e alla pasta. Nel linguaggio comune e complice anche l&#8217;uso improprio del termine cemento armato si fa spesso riferimento al cemento come prodotto finito.</p>



<p class="wp-block-paragraph">Nel caso della stampante 3D la macchina stampa il cemento, lo aggrega con l&#8217;acqua per creare il calcestruzzo. Per cui, prendendola alla larga, potrebbero andare bene entrambe le denominazioni.</p>



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