Case
Concrete Mix Design With Coarse Aggregate Of 5To 20Mm
2023-07-26T21:07:24+00:00
M20 Grade Concrete Mix Design IS10262 Latest Edition
Coarse aggregate ratios for different Zones of Fine aggregates are given in Table 3 of IS10262 These are ratios are valid for 05 Watercement ratio Table 3 Volume of coarse aggregate to total aggregate ratio for Mix Design of M20 concrete – IS10262 For aggregate = 20mm, Fine aggregate= Zone II, Watercement ratio = 00817 That is why it greatly affects the concrete mix design Its properties such as strength, maximum size, shape, and water absorption influence water demand, the quantity of cement and fine aggregate in concrete mixture It is reported that, high maximum coarse aggregate size leads to lower water demand in the mixture since such aggregate has lower surface area compare with small coarse aggregate How Coarse Aggregate Affects Mix Design of Concrete?Normally sized as coarse aggregate or fine aggregate Coarse Aggregate is normally greater than 5mm Fine Aggregate is aggregate less than 5mm Can be a single sized material typically 20mm, 14mm, 10mm,or 7mm or a graded aggregate consisting of a blend of single sized aggregate Concrete Aggregates are produced to Australian Standards (AS 2758 Concrete Aggregates Boral
M25 CONCRETE MIX DESIGN ENGINEERS ENGINE
For maximum size of aggregate of 20mm, the air content is taken as 20% f) Selection of water and sand content From IS method for 10mm max size of aggregate, Sand conforming to grading Zone II For change in value in W/C ratio, compacting factor and sand belonging Zone II, W /c ratio adjustments Change in condition adjustment required Water content % Percentage sand in total aggregate For Concrete Mix Design With Coarse Aggregate Of 5to Take 1200 g total aggregate all20mm,10mm,6mm,dust heat 175 to 190 paction mould assembly and rammer also tel: : [ protected]concrete mix design with coarse aggregate of 5to 20mmsmaller sized coarse aggregate produces higher strengths for a given watertocement ratio In fact, it is generally agreed that, although larger coarse aggregates can be used to make highstrength concrete, it is easier to do so with coarse aggregates below 125 mm (Y, in) (ACI 36395)EFFECTS OF AGGREGATE TYPE, SIZE, AND CONTENT ON
Concrete Mix Design Calculation for M15 Grade as per IS
M15 concrete mix has a mix proportion of 1:2:4 of cement, fine aggregate, and coarse aggregate respectively M15 – M represents Mix and 15 N/mm2 is the characteristic compressive strength of concrete cube at 28 days The following conditions decide the maximum size of coarse aggregate to be used in concrete It should not be more than one fourth of the minimum thickness of the member provided that the concrete can be placed without difficulty so as to aurround all reinforcement thoroughly and fill the corner of the form Plump (large undressed stone embedded with others in concrete on large work) HOW TO DECIDE MAXIMUM SIZE OF COARSE AGGREGATE TO BE Coarse Aggregate Gradation Requirements for CMD/Concrete Mix Design Note: Local specification must follow to determine the required gradation of CMD If the gradation did not meet the specification it must be mixed with desirable size in specified limit and %age COMBINED GRADATION FOR CEMENT CONCRETE CLASS A2A1 SOURCE : DATE : SNO SIZE OF AGGREGATE % Quality tests for aggregates and concrete mix design
differences in concrete properties using 10mm to 20mm
Depending on the mix design, either can be used to make essentially any range of concrete strengths When you use a smaller aggregate, such as the 10mm as your nominal coarse aggregate size, the specific surface area of the total volume of coarse aggregate is much higher than for the 20mm aggregate This means that your mix will require more cement, more water and more fine aggregate Coarse aggregate ratios for different Zones of Fine aggregates are given in Table 3 of IS10262 These are ratios are valid for 05 Watercement ratio Table 3 Volume of coarse aggregate to total aggregate ratio for Mix Design of M20 concrete – IS10262 For aggregate = 20mm, Fine aggregate= Zone II, Watercement ratio = 050M20 Grade Concrete Mix Design IS10262 Latest Edition To make ease in understanding we are finding the Concrete mix design of M20 grade concrete The Concrete mix ratio for M20 grade of concrete is 1:15:3 that mean 1 part of cement, 15 part of sand (fine aggregate) and 3 parts of aggregate (crushed stone) in volume and then batched for mixing To know the Concrete Mix Design follow below:Concrete Mix Design Different Grades of Concrete
Concrete Mix Design xls [pqn8dp2rd141]
C7 Determination of Fine Coarse aggregate Air entrapped in concrete Actual quantity of concrete "V" = = 2 % (From Table 3, IS 10262) 098 Cum Materials required for concrete Grade M 25 1 Concrete quantity = Sl No Material name Cum Quantity Unit 1 Cement 42273 kg 2 Fine Aggregate 56572 kg 3 Coarse Aggregate 20mm 70971 kg 4 Coarse Aggregate is usually described as either coarse aggregate (retained 475 mm) or fine aggregate (passing 475 mm) Aggregates generally make up about 95 percent of the total mass of hotmix asphalt mixtures and 80 percent by mass of concrete aggregate properties are, therefore, critical for quality hotmix asphalt or concrete Typically, hotmix asphalt mixtures consist of 50 percent coarse Aggregates Specifications Ontario Sand, Stone Gravel The nominal mix proportions varies based on the zones of sand and size of the course aggregates, so its batter to get with the design mix, But the mix design of concrete cannot be used for any reason on the work for grades of M20 or lower than the M20NOMINAL MIX DESIGN OF CONCRETE ENGINEERS ENGINE
EFFECTS OF AGGREGATE TYPE, SIZE, AND CONTENT ON CONCRETE
smaller sized coarse aggregate produces higher strengths for a given watertocement ratio In fact, it is generally agreed that, although larger coarse aggregates can be used to make highstrength concrete, it is easier to do so with coarse aggregates below 125 mm (Y, in) (ACI 36395)Design of concrete mix for a particular grade of concrete involves proper selection of relative proportions of cement, sand, and coarse aggregates While designing a concrete mix, it is always tried to obtain a minimum strength which is equal to characteristic strength of concrete but concrete must have the desired workability and durability Concrete mix design is mainly classified as;Factors affecting Concrete Mix Design Happho Coarse Aggregate Gradation Requirements for CMD/Concrete Mix Design Note: Local specification must follow to determine the required gradation of CMD If the gradation did not meet the specification it must be mixed with desirable size in specified limit and %age COMBINED GRADATION FOR CEMENT CONCRETE CLASS A2A1 SOURCE : DATE : SNO SIZE OF AGGREGATE % Quality tests for aggregates and concrete mix design
Grain Size Analysis of Fine Aggregates Particle Size
For coarse aggregate25mm,20mm 125mm, 10mm, 475mm Procedure of Grain Size Analysis of Aggregates For Fine Aggregates Take one kg of sand from the laboratory sample; Arrange the sieves in order of IS sieves no’s 480, 240, 120, 60, 30 and 15, Keeping sieve no480 at the top and 15 at the bottom and cover the top Keep the sample in the top sieve no480 Carry out the sieving in the set of Type of coarse aggregate Crushed Type of fine aggregate Crushed W f = 210 kg/m3 W c = 210 kg/m3 W = 2/3W f + 1/3W c = 210 kg/m 3 [When coarse and fine aggregates are of different types] [When coarse and fine aggregates are of the same type use values in Table 3] Freewater content W = 210 kg/m3 8Cement contentChapter 4: mix design calculation sheet for 40 N/mm2 Aggregate size = 20 mm; Coarse aggregate CRUSHED (10, 20mm), fine aggregate UNCRUSHED (55% pass 600 microns) Relative density of aggregates = 275; Maximum allowable free – water/cement ratio = 050; Minimum allowable cement content = 285 kg/m3 ; Maximum allowable cement content = 400 kg/m3; Absorption of fine aggregate = 18%; Absorption of coarse aggregate = 12% Total Moisture [PDF] Chapter 8 Design of Concrete Mixes Free Download PDF
Mix Design for Pumpable Concrete Materials Concrete
Design a mix for pumpable concrete from the following data: 1 The max size of coarse aggregate = 20 mm 2 The fine aggregate passes through the 300 micron or 03 mm = 19% 3 Slump of concrete = 75 to 100 mm Procedure: The proportions for 75100 mm slump will be taken as given in table 2052 From the table 2052, Water = 190 kg or litresProportion of fine aggregate to coarse aggregate (by mass) : Generally 1:2 but subject to an upper limit of 1:15 and a lower limit of 1:25 Note: The proportion of fine aggregate to coarse aggregate should be adjusted from upper limit to lower limit progressively as the grading of fine aggregate becomes finer and the maximum size of the coarse aggregate becomes largerStandard Concrete Mix Designs Jagdamba CementC7 Determination of Fine Coarse aggregate Air entrapped in concrete Actual quantity of concrete "V" = = 2 % (From Table 3, IS 10262) 098 Cum Materials required for concrete Grade M 25 1 Concrete quantity = Sl No Material name Cum Quantity Unit 1 Cement 42273 kg 2 Fine Aggregate 56572 kg 3 Coarse Aggregate 20mm 70971 kg 4 Coarse Concrete Mix Design xls [pqn8dp2rd141]
Illustration of Mix Design of Concrete by ISI Method
The common method of expressing the proportions of ingredients of a concrete mix is in the terms of parts or ratios of cement, fine and coarse aggregates eg a concrete mix of proportions 1:2:4 means that the mix contains one part of cement, two parts of fine aggregate and four parts of coarse aggregate The proportions are either by volume or by mass The watercement ratio is usually Coarse aggregates are particulates that are greater than 95mm The usual range employed is between 95mm and 375mm in diameter Typically the most common size of aggregate used in construction is 20mm A larger size, 40mm, is more common in mass concreteDifferent Types Sizes of Aggregate for Concrete For a good concrete mix, aggregates need to be clean, hard, strong particles free of absorbed chemicals or coatings of clay and other fine materials that could cause the deterioration of concrete Aggregates, which account for 60 to 75 percent of the total volume of concrete, are divided into two distinct categoriesfine and coarse Fine aggregates generally consist of natural sand or crushed Aggregates Portland Cement Association
Grain Size Analysis of Fine Aggregates Particle Size
For coarse aggregate25mm,20mm 125mm, 10mm, 475mm Procedure of Grain Size Analysis of Aggregates For Fine Aggregates Take one kg of sand from the laboratory sample; Arrange the sieves in order of IS sieves no’s 480, 240, 120, 60, 30 and 15, Keeping sieve no480 at the top and 15 at the bottom and cover the top Keep the sample in the top sieve no480 Carry out the sieving in the set of So the required concrete volume = 042 m 3 Now we have calculated the required volume It’s time to calculate the microingredients Concrete Material Calculation For the above slab volume ( 5m x 2m x 01m) = 1 m 3 We need 1 m 3 of wet volume concrete of M20 Mix, (Mix Ratio, M20 = 1: 15 : 3)How to calculate cement, sand and coarse aggregate for Type of coarse aggregate Crushed Type of fine aggregate Crushed W f = 210 kg/m3 W c = 210 kg/m3 W = 2/3W f + 1/3W c = 210 kg/m 3 [When coarse and fine aggregates are of different types] [When coarse and fine aggregates are of the same type use values in Table 3] Freewater content W = 210 kg/m3 8Cement contentChapter 4: mix design calculation sheet for 40 N/mm2