{"id":5868,"date":"2018-08-14T20:56:29","date_gmt":"2018-08-14T15:26:29","guid":{"rendered":"https:\/\/www.onlinecivilforum.com\/site\/?p=5868"},"modified":"2022-12-13T11:32:59","modified_gmt":"2022-12-13T06:02:59","slug":"information-required-for-concrete-mix-design","status":"publish","type":"post","link":"https:\/\/onlinecivilforum.com\/site\/information-required-for-concrete-mix-design\/","title":{"rendered":"Information required for concrete mix design\u00a0"},"content":{"rendered":"

Information required for concrete mix design\u00a0 <\/strong><\/h1>\n

Mix design can be defined as the process of selecting suitable ingredients of concrete and determining their relative proportions with the object of producing concrete of certain minimum strength and durability as economically as possible.To produce concrete of required strength and properties, selection of ingredients and their quantity is to be found which is called concrete mix design.<\/p>\n

The site engineer should give following information while giving material\u00a0 for mix design to the mix design laboratory: –<\/p>\n

a) Grade of concrete (the characteristic strength)<\/p>\n

b) Workability requirement in terms of slump<\/p>\n

c) Other properties\u00a0 (if required): –<\/p>\n

Retardation of initial set (to avoid cold joints in case of longer leads or for ready mix concrete)<\/p>\n

Slump retention (in case of ready mix concrete)<\/p>\n

iii. Pumpability (In case of ready mix concrete)<\/p>\n

Acceleration of strength\u00a0 (for\u00a0 precast\u00a0 members\u00a0 or\u00a0 where\u00a0 early\u00a0 deshuttering\u00a0 is desired)<\/p>\n

Buy Now Concrete,Steel,Brick Calculator<\/a><\/strong><\/p>\n

Flexural strength (normally required for concrete pavements)<\/strong><\/p>\n

d) Ascertain whether\u00a0 condition\u00a0of exposure to concrete is\u00a0 mild,\u00a0moderate-severe or\u00a0 very severe. Proper investigation of soil should be done to ascertain presence of sulphates & chlorides, in case of doubt.<\/p>\n

e) What is the degree of control at site? Following factors indicate degree of control at site: –<\/p>\n

Batching<\/strong> \u2013 weigh batching \/ volume batching.<\/p>\n

Type of aggregates<\/strong> \u2013 whether mixed graded aggregate will be used or 20mm, 10mm aggregates will be used separately.<\/p>\n

iii.\u00a0 Testing of concrete \u2013 whether casting & testing of concrete cubes will be done regularly at site.<\/p>\n

Source of aggregate \u2013\u00a0 whether\u00a0sources of sand\u00a0and aggregate will\u00a0 be standardised or likely to change frequently.<\/p>\n

Supervision \u2013 whether qualified staff will be present to supervise concreting work and make necessary corrections e.g. correction\u00a0 for\u00a0 moisture\u00a0 in\u00a0 sand\u00a0 and changes in material properties.<\/p>\n

Site laboratory \u2013 whether the site will have necessary laboratory equipment like sieves, weighing balance etc. to check material properties.<\/p>\n

See More Structural Design<\/a><\/strong><\/p>\n","protected":false},"excerpt":{"rendered":"

Information required for concrete mix design\u00a0 Mix design can be defined as the process of selecting suitable ingredients of concrete and determining their relative proportions with the object of producing concrete of certain minimum strength and durability as economically as possible.To produce concrete of required strength and properties, selection of ingredients and their quantity is …<\/p>\n","protected":false},"author":2264,"featured_media":5869,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"two_page_speed":[],"footnotes":""},"categories":[22],"tags":[69,76],"class_list":["post-5868","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-concrete-technology","tag-concrete","tag-concrete-mix-design"],"yoast_head":"\nInformation required for concrete mix design<\/title>\n<meta name=\"description\" content=\"Information required for concrete mix design\u00a0Mix design can be defined as 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