[et_pb_section fb_built=“1″ admin_label=“header_bergbau“ _builder_version=“4.16″ background_color=“#e2d4c0″ background_image=“https:\/\/engel-bergbau.de\/wp-content\/uploads\/2018\/03\/Gipsberwerk_Engel_lkw-befuellung-silo.png“ custom_margin=“|||“ custom_padding=“10%|0px|10%|0px“ global_colors_info=“{}“][\/et_pb_section][et_pb_section fb_built=“1″ _builder_version=“4.16″ global_colors_info=“{}“][et_pb_row _builder_version=“4.16″ max_width=“842px“ module_alignment=“center“ custom_padding=“100px||65px||false|false“ use_custom_width=“on“ custom_width_px=“842px“ global_colors_info=“{}“][et_pb_column type=“4_4″ _builder_version=“4.16″ custom_padding=“|||“ global_colors_info=“{}“ custom_padding__hover=“|||“][et_pb_text admin_label=“Tittle“ _builder_version=“4.16″ text_font=“Nunito||||||||“ text_font_size=“18px“ text_line_height=“1.8em“ header_font=“||||||||“ header_text_align=“center“ header_3_font=“Oswald|||on|||||“ header_3_font_size=“42px“ header_3_letter_spacing=“2px“ header_3_line_height=“1.5em“ max_width=“600%“ max_width_tablet=““ max_width_phone=““ max_width_last_edited=“on|phone“ module_alignment=“left“ custom_margin=“|||“ locked=“off“ global_colors_info=“{}“]<\/p>\n
Excellent r\u00e9gulateur de prise, le gypse naturel est particuli\u00e8rement adapt\u00e9 \u00e0 la production cimenti\u00e8re. Entre autres qualit\u00e9s, il est compos\u00e9 d\u2019un m\u00e9lange naturel de roche de gypse et d\u2019anhydrite, et ne contient aucun polluant.\u00a0<\/p>\n
Pour am\u00e9liorer la maniabilit\u00e9 du ciment en suspension, de la roche de gypse\/d\u2019anhydrite est ajout\u00e9e lors de l\u2019op\u00e9ration de broyage du clinker. Il s\u2019agit, en effet, d\u2019\u00e9viter que de gros cristaux d\u2019hydrate d\u2019aluminium t\u00e9tracalcique se forment, par r\u00e9ticulation, en s\u2019agr\u00e9geant tels les \u00e9l\u00e9ments d\u2019un ch\u00e2teau de cartes lorsque l\u2019eau est ajout\u00e9e au ciment. Au lieu de cela, une fine couche de cristaux de sulfate d\u2019aluminium calcique vient enrober les particules de clinker, emp\u00eachant ainsi la solidification du m\u00e9lange. De cette mani\u00e8re, le temps de prise est port\u00e9 \u00e0 plus de 2\u00a0heures, contre 10\u00a0minutes sans l\u2019ajout de roche de gypse \/ d\u2019anhydrite.\u00a0\u00a0\u00a0\u00a0<\/span><\/p>\n Il est primordial d\u2019obtenir un bon \u00e9quilibre entre gypse et anhydrite, de m\u00eame qu\u2019une forte coalescence\u00a0: Lors du broyage, la composante gypse est partiellement d\u00e9shydrat\u00e9e, et les semi-hydrates ainsi form\u00e9s sont essentiels pour r\u00e9guler la prise en d\u00e9but de solidification. La composante anhydrite, quant \u00e0 elle, ne se dissoudra que plus tard\u00a0; elle intervient surtout \u00e0 la fin de la solidification.\u00a0\u00a0<\/span><\/p>\n Dans la pratique, le broyage du m\u00e9lange clinker \/ r\u00e9gulateur de prise a des limites. En effet, plus celui-ci est fin, plus la surface totale de grain et la r\u00e9activit\u00e9 du m\u00e9lange augmentent, ce qui entra\u00eene une consommation d\u2019\u00e9nergie et un co\u00fbt de broyage plus \u00e9lev\u00e9s. En fait, la proximit\u00e9 imm\u00e9diate du gypse et de l\u2019anhydrite, particularit\u00e9 du gypse naturel, est parfaite puisqu\u2019elle assure, en chaque point, une r\u00e9gulation optimale de la solidification, contrairement aux sulfates de synth\u00e8se qui n\u2019ont pas cette caract\u00e9ristique.\u00a0\u00a0<\/span><\/p>\n Dans l\u2019id\u00e9al, au moment de la solidification, toutes les particules de clinker sont uniform\u00e9ment enrob\u00e9es de cristaux de sulfate d\u2019aluminium calcique.\u00a0\u00a0<\/span><\/p>\n Sur le terrain, des polluants peuvent perturber ce processus, car en plus d\u2019\u00eatre probl\u00e9matiques, par nature, ils diminuent la maniabilit\u00e9 du ciment.<\/p>\n [\/et_pb_text][\/et_pb_column][\/et_pb_row][\/et_pb_section][et_pb_section fb_built=“1″ admin_label=“Footer“ _builder_version=“4.16″ background_color=“#afafaf“ background_color_gradient_direction=“90deg“ parallax=“on“ custom_padding=“0px|0px|0px|0px“ saved_tabs=“all“ locked=“off“ 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custom_margin=“||6%|“ locked=“off“ global_colors_info=“{}“ theme_builder_area=“post_content“]<\/p>\n Gipsbergbau ENGEL GmbH [\/et_pb_text][\/et_pb_column][et_pb_column type=“1_3″ _builder_version=“4.16″ background_color=“rgba(114,114,114,0.99)“ custom_padding=“30px|5%|10px|10%“ global_colors_info=“{}“ custom_padding__hover=“|||“ theme_builder_area=“post_content“][et_pb_text admin_label=“Tittle“ _builder_version=“4.16″ text_font=“Oswald||||“ header_2_font=“Oswald|||on|||||“ header_2_text_align=“left“ header_2_font_size=“40px“ header_2_letter_spacing=“2px“ header_2_line_height=“1.5em“ background_layout=“dark“ custom_margin=“||4%|“ custom_padding=“|10px||“ global_colors_info=“{}“ theme_builder_area=“post_content“]<\/p>\n [\/et_pb_text][et_pb_text admin_label=“Texts“ _builder_version=“4.27.4″ link_font=“|600|||||||“ link_text_color=“#e09900″ header_font=“Oswald|||on|“ header_text_color=“#dca57d“ header_font_size=“16px“ header_letter_spacing=“2px“ header_line_height=“1.7em“ 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Auf der Hill 6 a
54295 Trier, Allemagne
T\u00e9l.\u00a0: +49 651 33131
Fax\u00a0: +49 651 308361
info@engel-bergbau.de<\/a><\/p>\nProduction<\/span><\/h2>\n
\u00ab\u00a0Horst-Peter-Stollen\u00a0\u00bb
Zur Gipsgrube 1
54310 Ralingen, Allemagne
T\u00e9l.\u00a0: +49 6585 839
Fax\u00a0: +49 6585 991218
produktion@engel-bergbau.de<\/a><\/p>\nLiens<\/span><\/h2>\n