{"id":7409,"date":"2024-01-01T16:30:00","date_gmt":"2024-01-01T16:30:00","guid":{"rendered":"https:\/\/geotec.rs\/?post_type=cpt_services&#038;p=7409"},"modified":"2026-10-19T23:08:51","modified_gmt":"2026-10-19T23:08:51","slug":"sdmt-mdmt","status":"publish","type":"cpt_services","link":"https:\/\/geotec.rs\/en\/usluge\/sdmt-mdmt\/","title":{"rendered":"SDMT\/MDMT (Seismic Dilatometer\/Medusa Dilatometer)"},"content":{"rendered":"<p><strong>GeoTec Insitu<\/strong> is proud to be able to offer our clients state-of-the-art multiparameter in-situ soil testing methods. Among the most advanced tests currently used in geotechnical engineering are those belonging to the family of flat dilatometers, namely <strong>Marchetti dilatometers<\/strong>.<br \/>This group includes the <strong>Seismic Dilatometer<\/strong> and the <strong>Medusa Dilatometer,<\/strong> which are used for advanced soil characterization. In addition to the standard DMT intermediate readings (I<small>D<\/small> , K<small>D<\/small> , E<small>D<\/small> and U<small>D<\/small>) and geotechnical parameters, the Seismic Dilatometer measures shear wave (V<small>s<\/small>) and compression wave (V<small>p<\/small>) velocities in the soil.<br \/>Based on the measured wave velocities, the small strain stiffness module (G<small>0<\/small> and\/or E<small>0<\/small>) can be determined. These form the basis for defining G\u2013\u03b3 and\/or E\u2013\u03b5 relationships used in advanced constitutive models. Furthermore, V<small>s <\/small>measurements make it possible to assess whether the soil exhibits a significant microstructure, which can significantly influence its mechanical behavior.<\/p>\n<p>\t\t\t\t\t\t\t\t\t\t\t\t\t<img fetchpriority=\"high\" decoding=\"async\" width=\"768\" height=\"1024\" src=\"https:\/\/geotec.rs\/wp-content\/uploads\/2026\/10\/slika-4-768x1024.jpg\" alt=\"\" srcset=\"https:\/\/geotec.rs\/wp-content\/uploads\/2026\/10\/slika-4-768x1024.jpg 768w, https:\/\/geotec.rs\/wp-content\/uploads\/2026\/10\/slika-4-225x300.jpg 225w, https:\/\/geotec.rs\/wp-content\/uploads\/2026\/10\/slika-4-1152x1536.jpg 1152w, https:\/\/geotec.rs\/wp-content\/uploads\/2026\/10\/slika-4-370x493.jpg 370w, https:\/\/geotec.rs\/wp-content\/uploads\/2026\/10\/slika-4-840x1120.jpg 840w, https:\/\/geotec.rs\/wp-content\/uploads\/2026\/10\/slika-4-410x547.jpg 410w, https:\/\/geotec.rs\/wp-content\/uploads\/2026\/10\/slika-4.jpg 1200w\" sizes=\"(max-width: 768px) 100vw, 768px\" \/><br \/>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t<a href=\"https:\/\/geotec.rs\/wp-content\/uploads\/2026\/10\/slika1.png\" data-elementor-open-lightbox=\"yes\" data-elementor-lightbox-title=\"slika1\" data-e-action-hash=\"#elementor-action%3Aaction%3Dlightbox%26settings%3DeyJpZCI6NzQxMCwidXJsIjoiaHR0cHM6XC9cL2dlb3RlYy5yc1wvd3AtY29udGVudFwvdXBsb2Fkc1wvMjAyNlwvMTBcL3NsaWthMS5wbmcifQ%3D%3D\"><br \/>\n\t\t\t\t\t\t\t<img decoding=\"async\" width=\"768\" height=\"417\" src=\"https:\/\/geotec.rs\/wp-content\/uploads\/2026\/10\/slika1-768x417.png\" alt=\"\" srcset=\"https:\/\/geotec.rs\/wp-content\/uploads\/2026\/10\/slika1-768x417.png 768w, https:\/\/geotec.rs\/wp-content\/uploads\/2026\/10\/slika1-300x163.png 300w, https:\/\/geotec.rs\/wp-content\/uploads\/2026\/10\/slika1-1024x555.png 1024w, https:\/\/geotec.rs\/wp-content\/uploads\/2026\/10\/slika1-370x201.png 370w, https:\/\/geotec.rs\/wp-content\/uploads\/2026\/10\/slika1-840x456.png 840w, https:\/\/geotec.rs\/wp-content\/uploads\/2026\/10\/slika1-410x222.png 410w, https:\/\/geotec.rs\/wp-content\/uploads\/2026\/10\/slika1.png 1287w\" sizes=\"(max-width: 768px) 100vw, 768px\" \/>\t\t\t\t\t\t\t\t<\/a><\/p>\n<p>The<strong> Medusa DMT<\/strong>, the latest development in this field, is a fully autonomous device that eliminates the risk of human error during measurements. Unlike the standard dilatometer, which uses air to apply pressure, Medusa uses an incompressible liquid, with measurements performed at the test depth, ensuring a high level of measurement accuracy. <strong>Medusa DMT<\/strong> enables soil characterization in conditions where pore pressure dissipation effects around the membrane are significant during testing (e.g. silty soils).<\/p>\n<h6>Particularly important Medusa DMT testing capabilities include:<\/h6>\n<ul>\n<li>Measurement of total horizontal stress (\u03c3 h) during blade insertion into the soil;<\/li>\n<li>Continuous monitoring of pore-pressure changes (A-reading) as a function of time, allowing the determination of the soil parameters k h and c h required for consolidation analysis;<\/li>\n<li>Repeated A and B pressure measurement cycles, allowing the pressure\u2013membrane displacement hysteresis to be obtained.<\/li>\n<\/ul>\n<p>\t\t\t\t\t\t\t\t\t\t\t\t\t\t<a href=\"https:\/\/geotec.rs\/wp-content\/uploads\/2026\/10\/Slika-2.png\" data-elementor-open-lightbox=\"yes\" data-elementor-lightbox-title=\"Slika 2\" data-e-action-hash=\"#elementor-action%3Aaction%3Dlightbox%26settings%3DeyJpZCI6NzQxMSwidXJsIjoiaHR0cHM6XC9cL2dlb3RlYy5yc1wvd3AtY29udGVudFwvdXBsb2Fkc1wvMjAyNlwvMTBcL1NsaWthLTIucG5nIn0%3D\"><br \/>\n\t\t\t\t\t\t\t<img decoding=\"async\" width=\"683\" height=\"579\" src=\"https:\/\/geotec.rs\/wp-content\/uploads\/2026\/10\/Slika-2.png\" alt=\"\" srcset=\"https:\/\/geotec.rs\/wp-content\/uploads\/2026\/10\/Slika-2.png 683w, https:\/\/geotec.rs\/wp-content\/uploads\/2026\/10\/Slika-2-300x254.png 300w, https:\/\/geotec.rs\/wp-content\/uploads\/2026\/10\/Slika-2-370x314.png 370w, https:\/\/geotec.rs\/wp-content\/uploads\/2026\/10\/Slika-2-410x348.png 410w\" sizes=\"(max-width: 683px) 100vw, 683px\" \/>\t\t\t\t\t\t\t\t<\/a><br \/>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t<a href=\"https:\/\/geotec.rs\/wp-content\/uploads\/2026\/10\/Slika-3.png\" data-elementor-open-lightbox=\"yes\" data-elementor-lightbox-title=\"Slika 3\" data-e-action-hash=\"#elementor-action%3Aaction%3Dlightbox%26settings%3DeyJpZCI6NzQxMiwidXJsIjoiaHR0cHM6XC9cL2dlb3RlYy5yc1wvd3AtY29udGVudFwvdXBsb2Fkc1wvMjAyNlwvMTBcL1NsaWthLTMucG5nIn0%3D\"><br \/>\n\t\t\t\t\t\t\t<img loading=\"lazy\" decoding=\"async\" width=\"768\" height=\"422\" src=\"https:\/\/geotec.rs\/wp-content\/uploads\/2026\/10\/Slika-3-768x422.png\" alt=\"\" srcset=\"https:\/\/geotec.rs\/wp-content\/uploads\/2026\/10\/Slika-3-768x422.png 768w, https:\/\/geotec.rs\/wp-content\/uploads\/2026\/10\/Slika-3-300x165.png 300w, https:\/\/geotec.rs\/wp-content\/uploads\/2026\/10\/Slika-3-1024x562.png 1024w, https:\/\/geotec.rs\/wp-content\/uploads\/2026\/10\/Slika-3-370x203.png 370w, https:\/\/geotec.rs\/wp-content\/uploads\/2026\/10\/Slika-3-840x461.png 840w, https:\/\/geotec.rs\/wp-content\/uploads\/2026\/10\/Slika-3-410x225.png 410w, https:\/\/geotec.rs\/wp-content\/uploads\/2026\/10\/Slika-3.png 1202w\" sizes=\"(max-width: 768px) 100vw, 768px\" \/>\t\t\t\t\t\t\t\t<\/a><\/p>\n<p>Some of the main applications of <strong>SDMT\/MDMT<\/strong> include:<\/p>\n<p><strong>a)<\/strong> Advanced soil characterization and soil classification;<br \/><strong>b)<\/strong> Determination of geotechnical soil parameters;<br \/><strong>c)<\/strong> Settlement analysis of shallow foundations and embankments;<br \/><strong>d)<\/strong> Assessment of soil liquefaction (using DMT and V<small>s<\/small> methods);<br \/><strong>e)<\/strong> Analysis of laterally loaded piles (determination of the so-called p\u2013y curves);<br \/><strong>f)<\/strong> Determination of G\u2013\u03b3 relationships;<br \/><strong>g)<\/strong> Compaction control of subgrade and engineered fills;<br \/><strong>h)<\/strong> Identification of slip-surface locations in overconsolidated clays;<br \/><strong>i)<\/strong> Determination of the coefficient of horizontal subgrade reaction, and others.<\/p>\n<p>In special situations, the dilatometer can also be used for seabed soil investigation from river or marine bottoms, using specially designed penetration systems.<\/p>\n<p>For more information, please visit https:\/\/www.marchetti-dmt.it\/.<\/p>\n<p>\u00a0<\/p>\n","protected":false},"excerpt":{"rendered":"<p>This group includes the Seismic Dilatometer and the Medusa Dilatometer, which are used for advanced soil characterization.<\/p>\n","protected":false},"author":1,"featured_media":7413,"comment_status":"closed","ping_status":"closed","template":"","cpt_services_group":[79],"class_list":["post-7409","cpt_services","type-cpt_services","status-publish","has-post-thumbnail","hentry","cpt_services_group-ispitivanje-i-kontrola"],"translation":{"provider":"WPGlobus","version":"3.0.0","language":"en","enabled_languages":["sr","en"],"languages":{"sr":{"title":true,"content":true,"excerpt":true},"en":{"title":true,"content":true,"excerpt":true}}},"_links":{"self":[{"href":"https:\/\/geotec.rs\/en\/wp-json\/wp\/v2\/cpt_services\/7409","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/geotec.rs\/en\/wp-json\/wp\/v2\/cpt_services"}],"about":[{"href":"https:\/\/geotec.rs\/en\/wp-json\/wp\/v2\/types\/cpt_services"}],"author":[{"embeddable":true,"href":"https:\/\/geotec.rs\/en\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/geotec.rs\/en\/wp-json\/wp\/v2\/comments?post=7409"}],"version-history":[{"count":41,"href":"https:\/\/geotec.rs\/en\/wp-json\/wp\/v2\/cpt_services\/7409\/revisions"}],"predecessor-version":[{"id":7470,"href":"https:\/\/geotec.rs\/en\/wp-json\/wp\/v2\/cpt_services\/7409\/revisions\/7470"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/geotec.rs\/en\/wp-json\/wp\/v2\/media\/7413"}],"wp:attachment":[{"href":"https:\/\/geotec.rs\/en\/wp-json\/wp\/v2\/media?parent=7409"}],"wp:term":[{"taxonomy":"cpt_services_group","embeddable":true,"href":"https:\/\/geotec.rs\/en\/wp-json\/wp\/v2\/cpt_services_group?post=7409"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}