{"id":181,"date":"2015-02-04T08:30:46","date_gmt":"2015-02-04T16:30:46","guid":{"rendered":"http:\/\/research.engineering.ucdavis.edu\/gpa\/?page_id=181"},"modified":"2015-02-11T10:01:52","modified_gmt":"2015-02-11T18:01:52","slug":"dilatometer","status":"publish","type":"page","link":"https:\/\/research.engineering.ucdavis.edu\/gpa\/site-characterization\/dilatometer\/","title":{"rendered":"Dilatometer Test"},"content":{"rendered":"<hr \/>\n<p>The flat plate dilatometer (DMT) is an in-situ test device with specific advantages that can useful on certain projects. However, it is not yet used as frequently as the cone penetration test (CPT) in engineering practice.<\/p>\n<div id=\"attachment_343\" style=\"width: 310px\" class=\"wp-caption alignleft\"><a href=\"http:\/\/research.engineering.ucdavis.edu\/gpa\/wp-content\/uploads\/sites\/43\/2015\/02\/DMT-P1-Labeled.jpg\"><img loading=\"lazy\" decoding=\"async\" aria-describedby=\"caption-attachment-343\" class=\"wp-image-343 size-medium\" src=\"http:\/\/research.engineering.ucdavis.edu\/gpa\/wp-content\/uploads\/sites\/43\/2015\/02\/DMT-P1-Labeled-300x196.jpg\" alt=\"This side view of a flat plate dilatometer (DMT) shows the 60-mm diameter circular membrane on the flat face (95 mm wide by 220 mm long). This membrane is expanded after the DMT has been pushed to the desired depth.\" width=\"300\" height=\"196\" srcset=\"https:\/\/research.engineering.ucdavis.edu\/gpa\/wp-content\/uploads\/sites\/43\/2015\/02\/DMT-P1-Labeled-300x196.jpg 300w, https:\/\/research.engineering.ucdavis.edu\/gpa\/wp-content\/uploads\/sites\/43\/2015\/02\/DMT-P1-Labeled-230x150.jpg 230w, https:\/\/research.engineering.ucdavis.edu\/gpa\/wp-content\/uploads\/sites\/43\/2015\/02\/DMT-P1-Labeled-150x98.jpg 150w, https:\/\/research.engineering.ucdavis.edu\/gpa\/wp-content\/uploads\/sites\/43\/2015\/02\/DMT-P1-Labeled.jpg 741w\" sizes=\"auto, (max-width: 300px) 100vw, 300px\" \/><\/a><p id=\"caption-attachment-343\" class=\"wp-caption-text\">This side view of a flat plate dilatometer (DMT) shows the 60-mm diameter circular membrane on the flat face (95 mm wide by 220 mm long). This membrane is expanded after the DMT has been pushed to the desired depth.<\/p><\/div>\n<div id=\"attachment_342\" style=\"width: 310px\" class=\"wp-caption alignleft\"><a href=\"http:\/\/research.engineering.ucdavis.edu\/gpa\/wp-content\/uploads\/sites\/43\/2015\/02\/DMT-P2-Labeled.jpg\"><img loading=\"lazy\" decoding=\"async\" aria-describedby=\"caption-attachment-342\" class=\"wp-image-342 size-medium\" src=\"http:\/\/research.engineering.ucdavis.edu\/gpa\/wp-content\/uploads\/sites\/43\/2015\/02\/DMT-P2-Labeled-300x195.jpg\" alt=\"The DMT is a relatively thin blade (14 mm) that is pushed into the soil, often using the same rig that is used to push a cone penetrometer. The DMT, like the CPT, generally cannot be pushed through very dense, hard, or gravelly soils that might damage the membrane or buckle the blade.\" width=\"300\" height=\"195\" srcset=\"https:\/\/research.engineering.ucdavis.edu\/gpa\/wp-content\/uploads\/sites\/43\/2015\/02\/DMT-P2-Labeled-300x195.jpg 300w, https:\/\/research.engineering.ucdavis.edu\/gpa\/wp-content\/uploads\/sites\/43\/2015\/02\/DMT-P2-Labeled-230x150.jpg 230w, https:\/\/research.engineering.ucdavis.edu\/gpa\/wp-content\/uploads\/sites\/43\/2015\/02\/DMT-P2-Labeled-150x98.jpg 150w, https:\/\/research.engineering.ucdavis.edu\/gpa\/wp-content\/uploads\/sites\/43\/2015\/02\/DMT-P2-Labeled.jpg 745w\" sizes=\"auto, (max-width: 300px) 100vw, 300px\" \/><\/a><p id=\"caption-attachment-342\" class=\"wp-caption-text\">The DMT is a relatively thin blade (14 mm) that is pushed into the soil, often using the same rig that is used to push a cone penetrometer. The DMT, like the CPT, generally cannot be pushed through very dense, hard, or gravelly soils that might damage the membrane or buckle the blade.<\/p><\/div>\n<div id=\"attachment_345\" style=\"width: 310px\" class=\"wp-caption alignleft\"><a href=\"http:\/\/research.engineering.ucdavis.edu\/gpa\/wp-content\/uploads\/sites\/43\/2015\/02\/DMT-P3-Labeled.jpg\"><img loading=\"lazy\" decoding=\"async\" aria-describedby=\"caption-attachment-345\" class=\"wp-image-345 size-medium\" src=\"http:\/\/research.engineering.ucdavis.edu\/gpa\/wp-content\/uploads\/sites\/43\/2015\/02\/DMT-P3-Labeled-300x195.jpg\" alt=\"Dual gages provide measurements of the pressure required to expand the DMT membrane. The first measurement is of the pressure required to lift the membrane off its seat (&quot;lift off&quot;). The second measurement is of the pressure required to expand the membrane by 1.0 mm. These pressures are used to estimate the in-situ lateral stress and lateral soil stiffness. DMT results have been correlated with other soil properties and used as the basis for some engineering design methodologies.\" width=\"300\" height=\"195\" srcset=\"https:\/\/research.engineering.ucdavis.edu\/gpa\/wp-content\/uploads\/sites\/43\/2015\/02\/DMT-P3-Labeled-300x195.jpg 300w, https:\/\/research.engineering.ucdavis.edu\/gpa\/wp-content\/uploads\/sites\/43\/2015\/02\/DMT-P3-Labeled-231x150.jpg 231w, https:\/\/research.engineering.ucdavis.edu\/gpa\/wp-content\/uploads\/sites\/43\/2015\/02\/DMT-P3-Labeled-150x98.jpg 150w, https:\/\/research.engineering.ucdavis.edu\/gpa\/wp-content\/uploads\/sites\/43\/2015\/02\/DMT-P3-Labeled.jpg 749w\" sizes=\"auto, (max-width: 300px) 100vw, 300px\" \/><\/a><p id=\"caption-attachment-345\" class=\"wp-caption-text\">Dual gages provide measurements of the pressure required to expand the DMT membrane. The first measurement is of the pressure required to lift the membrane off its seat (&#8220;lift off&#8221;). The second measurement is of the pressure required to expand the membrane by 1.0 mm. These pressures are used to estimate the in-situ lateral stress and lateral soil stiffness. DMT results have been correlated with other soil properties and used as the basis for some engineering design methodologies.<\/p><\/div>\n<div id=\"attachment_344\" style=\"width: 208px\" class=\"wp-caption alignleft\"><a href=\"http:\/\/research.engineering.ucdavis.edu\/gpa\/wp-content\/uploads\/sites\/43\/2015\/02\/DMT-P4-Labeled.jpg\"><img loading=\"lazy\" decoding=\"async\" aria-describedby=\"caption-attachment-344\" class=\"wp-image-344 size-medium\" src=\"http:\/\/research.engineering.ucdavis.edu\/gpa\/wp-content\/uploads\/sites\/43\/2015\/02\/DMT-P4-Labeled-198x300.jpg\" alt=\"The DMT can be pushed by a CPT rig, as shown here. DMT readings were obtained every 30 cm at this site.\" width=\"198\" height=\"300\" srcset=\"https:\/\/research.engineering.ucdavis.edu\/gpa\/wp-content\/uploads\/sites\/43\/2015\/02\/DMT-P4-Labeled-198x300.jpg 198w, https:\/\/research.engineering.ucdavis.edu\/gpa\/wp-content\/uploads\/sites\/43\/2015\/02\/DMT-P4-Labeled-99x150.jpg 99w, https:\/\/research.engineering.ucdavis.edu\/gpa\/wp-content\/uploads\/sites\/43\/2015\/02\/DMT-P4-Labeled.jpg 489w\" sizes=\"auto, (max-width: 198px) 100vw, 198px\" \/><\/a><p id=\"caption-attachment-344\" class=\"wp-caption-text\">The DMT can be pushed by a CPT rig, as shown here. DMT readings were obtained every 30 cm at this site.<\/p><\/div>\n","protected":false},"excerpt":{"rendered":"<p>The flat plate dilatometer (DMT) is an in-situ test device with specific advantages that can useful on certain projects. However, it is not yet used as frequently as the cone penetration test (CPT) in engineering practice.<\/p>\n","protected":false},"author":10,"featured_media":0,"parent":41,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"template-twocolumns-left.php","meta":{"ngg_post_thumbnail":0,"footnotes":""},"class_list":["post-181","page","type-page","status-publish","hentry"],"_links":{"self":[{"href":"https:\/\/research.engineering.ucdavis.edu\/gpa\/wp-json\/wp\/v2\/pages\/181","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/research.engineering.ucdavis.edu\/gpa\/wp-json\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/research.engineering.ucdavis.edu\/gpa\/wp-json\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/research.engineering.ucdavis.edu\/gpa\/wp-json\/wp\/v2\/users\/10"}],"replies":[{"embeddable":true,"href":"https:\/\/research.engineering.ucdavis.edu\/gpa\/wp-json\/wp\/v2\/comments?post=181"}],"version-history":[{"count":1,"href":"https:\/\/research.engineering.ucdavis.edu\/gpa\/wp-json\/wp\/v2\/pages\/181\/revisions"}],"predecessor-version":[{"id":190,"href":"https:\/\/research.engineering.ucdavis.edu\/gpa\/wp-json\/wp\/v2\/pages\/181\/revisions\/190"}],"up":[{"embeddable":true,"href":"https:\/\/research.engineering.ucdavis.edu\/gpa\/wp-json\/wp\/v2\/pages\/41"}],"wp:attachment":[{"href":"https:\/\/research.engineering.ucdavis.edu\/gpa\/wp-json\/wp\/v2\/media?parent=181"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}