{"id":2134,"date":"2017-09-03T20:08:59","date_gmt":"2017-09-03T14:38:59","guid":{"rendered":"https:\/\/www.onlinecivilforum.com\/site\/?p=2134"},"modified":"2022-12-13T11:33:42","modified_gmt":"2022-12-13T06:03:42","slug":"concrete-mix-design-grade-m60","status":"publish","type":"post","link":"https:\/\/onlinecivilforum.com\/site\/concrete-mix-design-grade-m60\/","title":{"rendered":"Concrete Mix Design Grade M60"},"content":{"rendered":"

CONCRETE MIX DESIGN (GRADE M60)<\/h1>\n

(a) DESIGN STIPULATION:-<\/p>\n

Target strength = 60Mpa
\nMax size of aggregate used = 12.5 mm
\nSpecific gravity of cement = 3.15
\nSpecific gravity of fine aggregate (F.A) = 2.6
\nSpecific gravity of Coarse aggregate (C.A) = 2.64
\nDry Rodded Bulk Density of fine aggregate = 1726 Kg\/m3
\nDry Rodded Bulk Density of coarse aggregate = 1638 Kg\/m3<\/div>\n

Step-1<\/h2>\n
Calculation for weight of Coarse Aggregate:
\nFrom ACI 211.4R Table 4.3.3 Fractional volume of oven dry Rodded C.A for 12.5mm size aggregate is 0.68m3
\nWeight of C.A = 0.68*1638 = 1108.13 Kg\/m3<\/div>\n

Step-2<\/h2>\n

Calculation for Quantity of Water:<\/h3>\n
From ACI 211.4R Table 4.3.4
\nAssuming Slump as 50 to 75mm and for C.A size 12.5 mm the Mixing water = 148 ml
\nVoid content of FA for this mixing water = 35%
\nVoid content of FA (V)
\nV = {1-(Dry Rodded unit wt \/ specific gravity of FA*1000)}*100
\n= [1-(1726\/2.6*1000)]*100
\n= 34.62%Adjustment in mixing water = (V-35)* 4.55
\n= (34.62 \u2013 35)*4.55
\n= -1.725 ml
\nTotal water required = 148 + (-1.725) = 146.28 ml
\nStep-3
\nCalculation for weight of cement
\nFrom ACI 211.4R Table 4.3.5(b)
\nTake W \/ C ratio = 0.29
\nWeight of cement = 146.28 \/ 0.29 = 504.21 kg\/m3<\/p>\n<\/div>\n

Step-4<\/h2>\n
Calculation for weight of Fine Aggregate:Cement = 504.21 \/ 3.15*1000= 0.1616
\nWater = 146.28 \/ 1*1000= 0.1462
\nCA = 1108.13 \/ 3*1000= 0.3690
\nEntrapped Air = 2 \/ 100= 0.020
\nTotal = 0.7376m3
\nVolume of Fine Aggregate= 1-0.7376
\nWeight of Fine Aggregate= 0.2624*2.6*1000= 683.24 kg\/m3<\/p>\n<\/div>\n

Step-5<\/h2>\n
Super plasticizer:
\nFor 0.8% = (0.8 \/ 100)*583.53 = 4.668 ml<\/div>\n

Step-6<\/h2>\n

Correction for water:<\/h3>\n
Weight of water (For 0.8%) =146.28 \u2013 4.668 =141.61 kg\/m3Requirement of materials per Cubic meter
\nCement = 504.21 Kg\/m3
\nFine Aggregate = 683.24 Kg\/m3
\nCoarse Aggregate = 1108.13 Kg\/m3
\nWater = 141.61 Kg\/ m3
\nSuper plasticizers = 4.6681 \/ m3<\/p>\n

So the final ratio becomes
\nCement : Fine agg (kg\/m3) : Coarse agg (kg\/m3) : Water (l\/m3): Superplasticizer (l\/m3)<\/p>\n<\/div>\n

1: 1.35 :2.19 :0.29 :0.8<\/strong><\/div>\n","protected":false},"excerpt":{"rendered":"

CONCRETE MIX DESIGN (GRADE M60) (a) DESIGN STIPULATION:- Target strength = 60Mpa Max size of aggregate used = 12.5 mm Specific gravity of cement = 3.15 Specific gravity of fine aggregate (F.A) = 2.6 Specific gravity of Coarse aggregate (C.A) = 2.64 Dry Rodded Bulk Density of fine aggregate = 1726 Kg\/m3 Dry Rodded Bulk …<\/p>\n","protected":false},"author":2264,"featured_media":2135,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"two_page_speed":[],"footnotes":""},"categories":[22],"tags":[69,76],"class_list":["post-2134","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-concrete-technology","tag-concrete","tag-concrete-mix-design"],"yoast_head":"\nConcrete Mix Design Grade M60<\/title>\n<meta name=\"description\" content=\"CONCRETE MIX DESIGN (GRADE M60) (a) DESIGN STIPULATION:- Target strength = 60Mpa Max size of aggregate used = 12.5 mm\" \/>\n<meta name=\"robots\" content=\"index, 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