{"id":498,"date":"2017-01-26T08:44:02","date_gmt":"2017-01-26T13:44:02","guid":{"rendered":"https:\/\/people.clas.ufl.edu\/azimmer\/?page_id=498"},"modified":"2026-03-19T08:25:09","modified_gmt":"2026-03-19T12:25:09","slug":"biocementation","status":"publish","type":"page","link":"https:\/\/people.clas.ufl.edu\/azimmer\/biocementation\/","title":{"rendered":"Biocementation"},"content":{"rendered":"\r\n<section class=\"fullwidth-text-block\">\r\n\t<div class=\"container px-0 pt-5\">\r\n\t\t<div class=\"row align-items-start\">\r\n\t\t\t<div class=\"col-12\">\r\n\t\t\t\t\n<h1 class=\"wp-block-heading\">Biocementation<\/h1>\n\n\n\n<p><strong>Project title: Application of Microbial Induced Calcite Precipitation to Stabilize Florida High-Organic Matter Soils for Roadway Construction<\/strong><\/p>\n\n\n\n\n\n<p>Funded By: Florida Department of Transportation<\/p>\n\n\n\n\n\n<p>Several areas of Florida are underlain by soils with high organic matter content.\u00a0 Construction of roadways on these soils is often problematic because these soils typically have low shear strengths and high compressibility. Over time, these soils continue to decompose and subside\/creep from stresses imposed by the roadway embankment, pavement structure and truck loads. In recent years, Microbial Induced Calcite Precipitation (MICP) has been significantly developed.\u00a0 For example, the metabolic activity of <em>Bascillus pasteurii<\/em> and <em>Sporosarcina pasteurii<\/em> (ureolytic microbes commonly found in sand) raises local pH which in turn causes Ca<sup>2+<\/sup> and HCO<sub>3<\/sub><sup>&#8211;<\/sup> ions, if present, to precipitate CaCO<sub>3 <\/sub>(DeJong et al. 2006).\u00a0 The calcium carbonate can cement mineral grains together, resulting in a soil of greater strength. The <strong><span style=\"text-decoration: underline;\">overall goal<\/span><\/strong> of this project is to develop and test this biologically enhanced soil-stability technology for use in these Florida high organic matter soils.<\/p>\n\n\n\n\n\n<p>Our testing apparatus:<\/p>\n\n\n\n\n\n<figure class=\"wp-block-image is-resized\"><a href=\"https:\/\/people.clas.ufl.edu\/azimmer\/files\/MICP-K1-exp.jpg\"><img loading=\"lazy\" decoding=\"async\" width=\"300\" height=\"225\" src=\"https:\/\/people.clas.ufl.edu\/azimmer\/files\/MICP-K1-exp-300x225.jpg\" alt=\"img\" class=\"wp-image-499\" style=\"width:359px;height:auto\" srcset=\"https:\/\/people.clas.ufl.edu\/azimmer\/files\/MICP-K1-exp-300x225.jpg 300w, https:\/\/people.clas.ufl.edu\/azimmer\/files\/MICP-K1-exp-200x150.jpg 200w, https:\/\/people.clas.ufl.edu\/azimmer\/files\/MICP-K1-exp.jpg 640w\" sizes=\"auto, (max-width: 300px) 100vw, 300px\" \/><\/a><\/figure>\n\n\n\n\n\n<figure class=\"wp-block-image is-resized\"><a href=\"https:\/\/people.clas.ufl.edu\/azimmer\/files\/IMG_0669-1.jpg\"><img loading=\"lazy\" decoding=\"async\" width=\"225\" height=\"300\" src=\"https:\/\/people.clas.ufl.edu\/azimmer\/files\/IMG_0669-1-225x300.jpg\" alt=\"img1\" class=\"wp-image-501\" style=\"width:274px;height:auto\" srcset=\"https:\/\/people.clas.ufl.edu\/azimmer\/files\/IMG_0669-1-225x300.jpg 225w, https:\/\/people.clas.ufl.edu\/azimmer\/files\/IMG_0669-1-200x267.jpg 200w, https:\/\/people.clas.ufl.edu\/azimmer\/files\/IMG_0669-1-300x400.jpg 300w, https:\/\/people.clas.ufl.edu\/azimmer\/files\/IMG_0669-1.jpg 480w\" sizes=\"auto, (max-width: 225px) 100vw, 225px\" \/><\/a><\/figure>\n\n\n\n\n\n<p>A cemented product:<\/p>\n\n\n\n\n\n<figure class=\"wp-block-image is-resized\"><a href=\"https:\/\/people.clas.ufl.edu\/azimmer\/files\/Cemented-F8-1.jpg\"><img loading=\"lazy\" decoding=\"async\" width=\"300\" height=\"225\" src=\"https:\/\/people.clas.ufl.edu\/azimmer\/files\/Cemented-F8-1-300x225.jpg\" alt=\"img2\" class=\"wp-image-507\" style=\"width:368px;height:auto\" srcset=\"https:\/\/people.clas.ufl.edu\/azimmer\/files\/Cemented-F8-1-300x225.jpg 300w, https:\/\/people.clas.ufl.edu\/azimmer\/files\/Cemented-F8-1-768x576.jpg 768w, https:\/\/people.clas.ufl.edu\/azimmer\/files\/Cemented-F8-1-1024x768.jpg 1024w, https:\/\/people.clas.ufl.edu\/azimmer\/files\/Cemented-F8-1-200x150.jpg 200w\" sizes=\"auto, (max-width: 300px) 100vw, 300px\" \/><\/a><\/figure>\n\n\n\r\n\t\t\t<\/div>\r\n\t\t<\/div>\r\n\t<\/div>\r\n<\/section>\r\n","protected":false},"excerpt":{"rendered":"","protected":false},"author":474,"featured_media":0,"parent":0,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"_acf_changed":false,"featured_post":"","footnotes":"","_links_to":"","_links_to_target":""},"class_list":["post-498","page","type-page","status-publish","hentry"],"acf":[],"_links":{"self":[{"href":"https:\/\/people.clas.ufl.edu\/azimmer\/wp-json\/wp\/v2\/pages\/498","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/people.clas.ufl.edu\/azimmer\/wp-json\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/people.clas.ufl.edu\/azimmer\/wp-json\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/people.clas.ufl.edu\/azimmer\/wp-json\/wp\/v2\/users\/474"}],"replies":[{"embeddable":true,"href":"https:\/\/people.clas.ufl.edu\/azimmer\/wp-json\/wp\/v2\/comments?post=498"}],"version-history":[{"count":7,"href":"https:\/\/people.clas.ufl.edu\/azimmer\/wp-json\/wp\/v2\/pages\/498\/revisions"}],"predecessor-version":[{"id":831,"href":"https:\/\/people.clas.ufl.edu\/azimmer\/wp-json\/wp\/v2\/pages\/498\/revisions\/831"}],"wp:attachment":[{"href":"https:\/\/people.clas.ufl.edu\/azimmer\/wp-json\/wp\/v2\/media?parent=498"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}