{"id":1783,"date":"2017-07-08T18:46:27","date_gmt":"2017-07-08T13:16:27","guid":{"rendered":"http:\/\/onlinecivilforum.com\/site\/?p=1783"},"modified":"2022-12-13T11:33:53","modified_gmt":"2022-12-13T06:03:53","slug":"need-of-non-destructive-testing-and-advantages","status":"publish","type":"post","link":"https:\/\/onlinecivilforum.com\/site\/need-of-non-destructive-testing-and-advantages\/","title":{"rendered":"Need of Non-Destructive Testing and Advantages"},"content":{"rendered":"

Need of Non-Destructive Testing <\/strong><\/p>\n

\u00a0<\/strong>Information about the in-situ strength of concrete may be required for both under construction as well as existing concrete structures. For new concrete structures under construction, N.D.T.may be required under following circumstances:<\/p>\n

    \n
  1. Non-compliance of the material supplied in terms of works specimen test results or other specified requirements.<\/li>\n
  2. Uncertainties concerning the level of workmanship involved in construction operations affecting the hardened properties of the in-situ concrete.<\/li>\n
  3. Quality control of construction.<\/li>\n
  4. Monitoring of strength development in relation to formwork removal, curing, prestressing,load application or similar purposes.<\/li>\n<\/ol>\n

    Existing concrete structure require an examination under the following circumstances:<\/strong><\/p>\n

      \n
    1. Deterioration of the concrete due to factors such a external or internal chemical attack,fire explosion and other environmental effects.<\/li>\n
    2. To make assessment of the load carrying capacity of an existing structure for change of ownership or insurance purpose or in relation to a proposed change of use or alteration.<\/li>\n<\/ol>\n

      Comparison Between Epoxy And Cement Grouts<\/a><\/strong><\/p>\n

      Advantages of Non-Destructive Testing<\/strong><\/p>\n

      Non-destructive methods have following distinct advantages over the prevalent destructive methods of testing.<\/p>\n

        \n
      1. The measurement can be done on concrete in-situ and thus representative samples are not required. In destructive method of testing the change in quality of concrete has to be studied on a long-term basis with respect to curing or deterioration due to certain causes.<\/li>\n<\/ol>\n

        A\u00a0 large\u00a0 number\u00a0 of\u00a0 specimens\u00a0 are\u00a0 required\u00a0 which\u00a0 could\u00a0 be\u00a0 tested\u00a0 to\u00a0 destruction,\u00a0 at various ages. Since it cannot be guaranteed that all specimens are of the same quality, the results obtained may not be very reliable.<\/p>\n

          \n
        1. Non-destructive testing makes its possible to study the variation in quality of concrete with time and external influences.<\/li>\n
        2. In N.D.T.\u00a0 method\u00a0 the\u00a0 concrete\u00a0 is\u00a0 not\u00a0 loaded\u00a0 to\u00a0 destruction.\u00a0 Its\u00a0 quality\u00a0 is\u00a0 judged\u00a0 by measuring certain of its physical properties, which are related to its quality.<\/li>\n
        3. In N.D.T. there is no wastage of material as in destructive methods of testing.<\/li>\n<\/ol>\n","protected":false},"excerpt":{"rendered":"

          Need of Non-Destructive Testing \u00a0Information about the in-situ strength of concrete may be required for both under construction as well as existing concrete structures. For new concrete structures under construction, N.D.T.may be required under following circumstances: Non-compliance of the material supplied in terms of works specimen test results or other specified requirements. Uncertainties concerning the …<\/p>\n","protected":false},"author":2264,"featured_media":1784,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"two_page_speed":[],"footnotes":""},"categories":[53],"tags":[172],"class_list":["post-1783","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-field-testing","tag-non-destructive-testing"],"yoast_head":"\nNeed of Non-Destructive Testing and Advantages<\/title>\n<meta name=\"description\" content=\"Need of Non-Destructive Testing Information about the in-situ strength of concrete may be required for both under construction\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/onlinecivilforum.com\/site\/need-of-non-destructive-testing-and-advantages\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" 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