{"id":2092,"date":"2017-08-18T10:57:19","date_gmt":"2017-08-18T05:27:19","guid":{"rendered":"https:\/\/www.onlinecivilforum.com\/site\/?p=2092"},"modified":"2022-12-13T11:33:45","modified_gmt":"2022-12-13T06:03:45","slug":"tests-bricks-grading","status":"publish","type":"post","link":"https:\/\/onlinecivilforum.com\/site\/tests-bricks-grading\/","title":{"rendered":"Tests for Bricks and Grading"},"content":{"rendered":"

Tests for Bricks and Grading <\/strong><\/h1>\n

\u00a0<\/strong><\/p>\n

A brick is subjected to following tests for suitability of the construction work.<\/p>\n

    \n
  1. Absorption<\/li>\n<\/ol>\n

    iii. Crushing strength or compression strength<\/p>\n

      \n
    1. Hardness<\/li>\n
    2. Presence soluble salts<\/li>\n
    3. Shape and size<\/li>\n<\/ol>\n

      vii. Soundness<\/p>\n

      viii. Structure<\/p>\n

      1) Absorption:<\/strong> A good should not absorb not more than 20 percent of weight of dry brick<\/p>\n

      2) Compressive strength:<\/strong> crushing or compressive strength of brick is found out by placing it in compression testing machine. It is pressed till it breaks. Minimum crushing strength of brick is 35kg\/cm2 and for superior bricks, it may vary from 70 to 140 kg\/cm2.<\/p>\n

      3) Hardness:<\/strong> No impression is left on the surface the brick is treated to be sufficiently hard<\/p>\n

      4) Presence of soluble salts:<\/strong> The bricks should not show any grey or white deposits after immerted in water for 24 hours<\/p>\n

      5) Shape and size:<\/strong> It should be standard size and shape with sharp edges<\/p>\n

      6) Soundness:<\/strong> The brick should give clear ringing sound struck each other<\/p>\n

      7) Structure:<\/strong> The structure should be homogeneous, compact and free from any defects<\/p>\n

       <\/p>\n

      Grading of Bricks<\/strong><\/h2>\n

      As per IS10719557 and 1970 code specifications,<\/h3>\n
        \n
      1. Bricks with compressive strength not less than 140kg\/cm2 \u2013Grade A-A class.<\/li>\n
      2. Bricks with compressive strength not less than 105kg\/cm2 \u2013 First class bricks – Grade A.<\/li>\n
      3. Bricks with compressive strength not less than 70kg\/cm2 \u2013 Second class bricks \u2013 Grade B.<\/li>\n
      4. Bricks with compressive strength not less than the average value 35kg\/cm2 \u2013 class III bricks \u2013 Grade C.<\/li>\n<\/ol>\n

         <\/p>\n

         <\/p>\n","protected":false},"excerpt":{"rendered":"

        Tests for Bricks and Grading \u00a0 A brick is subjected to following tests for suitability of the construction work. Absorption iii. Crushing strength or compression strength Hardness Presence soluble salts Shape and size vii. Soundness viii. Structure 1) Absorption: A good should not absorb not more than 20 percent of weight of dry brick 2) …<\/p>\n","protected":false},"author":2264,"featured_media":2094,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"two_page_speed":[],"footnotes":""},"categories":[47],"tags":[71],"class_list":["post-2092","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-construction-material","tag-bricks"],"yoast_head":"\nTests for Bricks and Grading<\/title>\n<meta name=\"description\" content=\"Tests for bricks and Grading A brick is generally subjected to following tests to find out its suitability of the construction work. 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