{"id":12120,"date":"2022-03-28T07:21:22","date_gmt":"2022-03-28T07:21:22","guid":{"rendered":"https:\/\/tononeng.com\/tonon-usa\/?page_id=12120"},"modified":"2022-09-06T12:36:47","modified_gmt":"2022-09-06T12:36:47","slug":"cerchar-test","status":"publish","type":"page","link":"https:\/\/tononeng.com\/tonon-usa\/cerchar-test\/","title":{"rendered":"Cerchar test"},"content":{"rendered":"\t\t<div data-elementor-type=\"wp-page\" data-elementor-id=\"12120\" class=\"elementor elementor-12120\" data-elementor-settings=\"[]\">\n\t\t\t\t\t\t\t<div class=\"elementor-section-wrap\">\n\t\t\t\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-59939124 elementor-section-full_width elementor-section-height-default elementor-section-height-default\" data-id=\"59939124\" data-element_type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-top-column elementor-element elementor-element-a6dac4e\" data-id=\"a6dac4e\" data-element_type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t\t\t<div class=\"elementor-element elementor-element-60c1849d elementor-widget elementor-widget-image-carousel\" data-id=\"60c1849d\" data-element_type=\"widget\" data-settings=\"{&quot;slides_to_show&quot;:&quot;1&quot;,&quot;navigation&quot;:&quot;none&quot;,&quot;autoplay&quot;:&quot;yes&quot;,&quot;pause_on_hover&quot;:&quot;yes&quot;,&quot;pause_on_interaction&quot;:&quot;yes&quot;,&quot;autoplay_speed&quot;:5000,&quot;infinite&quot;:&quot;yes&quot;,&quot;effect&quot;:&quot;slide&quot;,&quot;speed&quot;:500}\" data-widget_type=\"image-carousel.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t<style>\/*! elementor - v3.5.2 - 22-12-2021 *\/\n.elementor-widget-image-carousel .swiper-container{position:static}.elementor-widget-image-carousel .swiper-container .swiper-slide figure{line-height:inherit}.elementor-widget-image-carousel .swiper-slide{text-align:center}.elementor-image-carousel-wrapper:not(.swiper-container-initialized) .swiper-slide{max-width:calc(100% \/ var(--e-image-carousel-slides-to-show, 3))}<\/style>\t\t<div class=\"elementor-image-carousel-wrapper swiper-container\" dir=\"ltr\">\n\t\t\t<div class=\"elementor-image-carousel swiper-wrapper swiper-image-stretch\">\n\t\t\t\t\t\t\t\t<div class=\"swiper-slide\"><figure class=\"swiper-slide-inner\"><img decoding=\"async\" class=\"swiper-slide-image\" src=\"https:\/\/tononeng.com\/tonon-usa\/wp-content\/uploads\/2022\/03\/1_ucs-without-moduli-con-testo-540x166.jpeg\" alt=\"UCS without Moduli\" \/><figcaption class=\"elementor-image-carousel-caption\">UCS without Moduli<\/figcaption><\/figure><\/div><div class=\"swiper-slide\"><figure class=\"swiper-slide-inner\"><img decoding=\"async\" class=\"swiper-slide-image\" src=\"https:\/\/tononeng.com\/tonon-usa\/wp-content\/uploads\/2022\/03\/2_ucs-with-moduli-con-testo-540x166.jpeg\" alt=\"UCS with Moduli\" \/><figcaption class=\"elementor-image-carousel-caption\">UCS with Moduli<\/figcaption><\/figure><\/div><div class=\"swiper-slide\"><figure class=\"swiper-slide-inner\"><img decoding=\"async\" class=\"swiper-slide-image\" src=\"https:\/\/tononeng.com\/tonon-usa\/wp-content\/uploads\/2022\/03\/6_brazilian-con-testo-540x166.jpeg\" alt=\"Brazilian Test\" \/><figcaption class=\"elementor-image-carousel-caption\">Brazilian Test<\/figcaption><\/figure><\/div><div class=\"swiper-slide\"><figure class=\"swiper-slide-inner\"><img decoding=\"async\" class=\"swiper-slide-image\" src=\"https:\/\/tononeng.com\/tonon-usa\/wp-content\/uploads\/2022\/03\/6_abrasion-con-testo-540x166.jpeg\" alt=\"Abrasion Test\" \/><figcaption class=\"elementor-image-carousel-caption\">Abrasion Test<\/figcaption><\/figure><\/div><div class=\"swiper-slide\"><figure class=\"swiper-slide-inner\"><img decoding=\"async\" class=\"swiper-slide-image\" src=\"https:\/\/tononeng.com\/tonon-usa\/wp-content\/uploads\/2022\/03\/5_cerchar-con-testo-540x166.jpeg\" alt=\"Cerchar Test\" \/><figcaption class=\"elementor-image-carousel-caption\">Cerchar Test<\/figcaption><\/figure><\/div><div class=\"swiper-slide\"><figure class=\"swiper-slide-inner\"><img decoding=\"async\" class=\"swiper-slide-image\" src=\"https:\/\/tononeng.com\/tonon-usa\/wp-content\/uploads\/2022\/03\/5_brittleness-con-testo-540x166.jpeg\" alt=\"Brittleness Test\" \/><figcaption class=\"elementor-image-carousel-caption\">Brittleness Test<\/figcaption><\/figure><\/div><div class=\"swiper-slide\"><figure class=\"swiper-slide-inner\"><img decoding=\"async\" class=\"swiper-slide-image\" src=\"https:\/\/tononeng.com\/tonon-usa\/wp-content\/uploads\/2022\/03\/3_thin-section-analyses-con-testo-540x166.jpeg\" alt=\"Thin Section Analyses\" \/><figcaption class=\"elementor-image-carousel-caption\">Thin Section Analyses<\/figcaption><\/figure><\/div>\t\t\t<\/div>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-4c9aef0 elementor-section-stretched elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"4c9aef0\" data-element_type=\"section\" data-settings=\"{&quot;stretch_section&quot;:&quot;section-stretched&quot;,&quot;background_background&quot;:&quot;classic&quot;}\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-top-column elementor-element elementor-element-6e27581\" data-id=\"6e27581\" data-element_type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t\t\t<div class=\"elementor-element elementor-element-89898b5 elementor-widget elementor-widget-shortcode\" data-id=\"89898b5\" data-element_type=\"widget\" data-widget_type=\"shortcode.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t<\/p><p id=\u201cbreadcrumbs\u201d><span><span><a href=\"https:\/\/tononeng.com\/tonon-usa\/\">Home<\/a><\/span><\/p><p>\t\t<div class=\"elementor-shortcode\"><\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-b49d543 elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"b49d543\" data-element_type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-top-column elementor-element elementor-element-c3e41a3\" data-id=\"c3e41a3\" data-element_type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t\t\t<div class=\"elementor-element elementor-element-f867a25 elementor-widget elementor-widget-hub_fancy_heading\" data-id=\"f867a25\" data-element_type=\"widget\" data-widget_type=\"hub_fancy_heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\n\t\t<div id=\"ld-fancy-heading-69ebea7bf2afa\" class=\"ld-fancy-heading\">\n\t\t\t<h3 class=\"ld-fh-element elementor-heading-title lqd-highlight-underline lqd-highlight-grow-left h3\"  > Cerchar Abrasivity Index Test: a test to determine the abrasiveness of rocks<\/h3>\t\t<\/div>\n\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-115b607 elementor-widget elementor-widget-text-editor\" data-id=\"115b607\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t<style>\/*! elementor - v3.5.2 - 22-12-2021 *\/\n.elementor-widget-text-editor.elementor-drop-cap-view-stacked .elementor-drop-cap{background-color:#818a91;color:#fff}.elementor-widget-text-editor.elementor-drop-cap-view-framed .elementor-drop-cap{color:#818a91;border:3px solid;background-color:transparent}.elementor-widget-text-editor:not(.elementor-drop-cap-view-default) .elementor-drop-cap{margin-top:8px}.elementor-widget-text-editor:not(.elementor-drop-cap-view-default) .elementor-drop-cap-letter{width:1em;height:1em}.elementor-widget-text-editor .elementor-drop-cap{float:left;text-align:center;line-height:1;font-size:50px}.elementor-widget-text-editor .elementor-drop-cap-letter{display:inline-block}<\/style>\t\t\t\t<p>The test for determining the Cerchar Abrasiveness Index (CAI) is regulated by ASTM D7625: it consists in determining the abrasiveness of a rock starting from the degree of wear it induces on a steel tip. This test is widely used in the field of underground excavations, to evaluate the extent of wear of the cutting edges of the cutters. The Cerchar test consists in putting the rock specimen in contact with a metal tip and, thanks to a load applied to the latter, causing &#8220;incisions&#8221; (scratches) on the rock. From the measurement of the tip wear, a Cerchar Abrasivity Index value will subsequently be obtained, which will characterize the abrasiveness of the material. The name Cerchar is the acronym for Center d &#8216;\u00c9tudes et Recherches des Charbonnages, a French laboratory where this test technique was first developed. The execution of this type of test involves the use of an apparatus which can be the Original or the West Cerchar: LRRT is equipped with a West Cerchar apparatus, the diagram of which is shown in the following figure.<\/p>\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-dea706e elementor-widget elementor-widget-image\" data-id=\"dea706e\" data-element_type=\"widget\" data-widget_type=\"image.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t<style>\/*! elementor - v3.5.2 - 22-12-2021 *\/\n.elementor-widget-image{text-align:center}.elementor-widget-image a{display:inline-block}.elementor-widget-image a img[src$=\".svg\"]{width:48px}.elementor-widget-image img{vertical-align:middle;display:inline-block}<\/style>\t\t\t\t\t\t\t\t\t<figure class=\"wp-caption\">\n\t\t\t\t\t\t\t\t\t\t<img loading=\"lazy\" decoding=\"async\" width=\"404\" height=\"356\" src=\"\/\/www.w3.org\/2000\/svg&#039; viewBox=&#039;0 0  &#039;%3E%3C\/svg%3E\" class=\"attachment-large size-large ld-lazyload\" alt=\"\" data-src=\"https:\/\/tononeng.com\/tonon-usa\/wp-content\/uploads\/2022\/02\/cerchar_apparato.png\" data-srcset=\"https:\/\/tononeng.com\/tonon-usa\/wp-content\/uploads\/2022\/02\/cerchar_apparato.png 404w, https:\/\/tononeng.com\/tonon-usa\/wp-content\/uploads\/2022\/02\/cerchar_apparato-300x264.png 300w\" data-sizes=\"(max-width: 404px) 100vw, 404px\" data-aspect=\"\" \/>\t\t\t\t\t\t\t\t\t\t\t<figcaption class=\"widget-image-caption wp-caption-text\">Simplified diagram of the West Cerchar apparatus for Cerchar Abrasivity Index Test supplied to the Laboratorio Rocce e RIcerca Tonon, srl (Source: ASTM D 7625, modified).<\/figcaption>\n\t\t\t\t\t\t\t\t\t\t<\/figure>\n\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-8b1c0ce elementor-widget elementor-widget-text-editor\" data-id=\"8b1c0ce\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<p>Other tools needed for the test are steel drills with a known aperture and a microscope to measure wear.<\/p>\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-2f24961 elementor-widget elementor-widget-image\" data-id=\"2f24961\" data-element_type=\"widget\" data-widget_type=\"image.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t\t\t\t<figure class=\"wp-caption\">\n\t\t\t\t\t\t\t\t\t\t<img loading=\"lazy\" decoding=\"async\" width=\"264\" height=\"196\" src=\"\/\/www.w3.org\/2000\/svg&#039; viewBox=&#039;0 0  &#039;%3E%3C\/svg%3E\" class=\"attachment-large size-large ld-lazyload\" alt=\"\" data-src=\"https:\/\/tononeng.com\/tonon-usa\/wp-content\/uploads\/2022\/02\/cerchar_usura_punta.png\" data-aspect=\"\" \/>\t\t\t\t\t\t\t\t\t\t\t<figcaption class=\"widget-image-caption wp-caption-text\">Typical way of wearing the tip after performing the test. The value to be considered must be the result of the averages taken in two diametrically opposite points (Source: ASTM D 7625, modified).<\/figcaption>\n\t\t\t\t\t\t\t\t\t\t<\/figure>\n\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-55caf15 elementor-widget elementor-widget-text-editor\" data-id=\"55caf15\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<p>The Cerchar Abrasivity Index value is calculated differently if the test is performed on a surface cut with a diamond saw (CAIs) or on a fresh cut surface (CAI): the two values \u200b\u200bare linked by a linear relationship. This type of test &#8211; the Cerchar Abrasivity Index &#8211; finds wide applications in the design of tunnels: an assessment of the degree of abrasiveness of a rock allows us to make hypotheses on the timing of advancement and on the maintenance costs of excavation machinery.<\/p>\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t","protected":false},"excerpt":{"rendered":"<p>UCS without Moduli UCS with Moduli Brazilian Test Abrasion Test Cerchar Test Brittleness Test Thin Section Analyses Cerchar Abrasivity Index Test: a test to determine the abrasiveness of rocks The test for determining the Cerchar Abrasiveness Index (CAI) is regulated by ASTM D7625: it consists in determining the abrasiveness of a rock starting from the [&hellip;]<\/p>\n","protected":false},"author":2,"featured_media":0,"parent":0,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"inline_featured_image":false,"footnotes":""},"class_list":["post-12120","page","type-page","status-publish","hentry"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v19.6.1 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Cerchar test | Tonon USA<\/title>\n<meta name=\"description\" content=\"Cerchar Abrasivity Index Test: a test to determine the abrasiveness of rocks.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/tononeng.com\/tonon-usa\/cerchar-test\/\" \/>\n<meta property=\"og:locale\" content=\"it_IT\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Cerchar test | Tonon USA\" \/>\n<meta property=\"og:description\" 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