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Why Mm Aggregate Not Replacing Mm In Pcc

Why Mm Aggregate Not Replacing Mm In Pcc

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  • IS 2571 1970 Code of practice for laying insitu cement

    4Omm 20 mm 16 mm 125 mm 95 to 100 100 30 to 70 95 to 100 100 100 90 to 100 90 to 100 to 35 25 55 30 70 40 85 0 to 5 oto 10 oto10 0 to 10 4212 Fine aggregate The grading of fine aggregate for cement mncrete flooring mix shall be within the limits of one of the two zones

  • Portland Cement Concrete Pavement Best Practices

    Older PCC pavements contained maximum aggregate sizes of up to 25 inches 625 mm Although not mandated by specification recent maximum aggregate size has been as small as 075 inches 19 mm for new pavements Cement fineness has increased and more variation in mixes is typical because mix

  • Solved 1 For Preparing Portland Cement Concrete Would

    For preparing Portland cement concrete would you prefer round and smooth aggregate or rough and angular aggregate Briefly explain why 5 points 2 Given the sieve analysis results shown in the table answer questions below Sieve Size Amount Retained 95 mm 38 in 475 mm No 4 236 mm No 8 118 mm No 16 060 mm No 030 mm No 50 0

  • Different Types amp Sizes of Aggregate for Concrete

    Aug 11 2018 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 concrete Larger aggregate diameters reduce the quantity of cement and water needed because of its

  • How much quantity of Stone chips in 1 m3 Pcc and Rcc

    Aug 16 2009 In Pcc we can use 66 of 40mm staggragate and 25 of 20 mm st aggragate if the ratio of mix is 15101cement5coarse sand 10 stone aggregate For RCC general works of ratio 124 we can use stone aggregate 20 mm as 705 and 10 mm stone aggregate as 235 If you are not a Civil Engineer Go for mix ratios as given above 1

  • Aggregates Portland Cement Association

    Aggregates Aggregates are inert granular materials such as sand gravel or crushed stone that along with water and portland cement are an essential ingredient in 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

  • What is Plain Cement Concrete PCC in Construction of

    Feb 07 2019 The size of the aggregate used for PCC varies from 1012 mm to 40 mm depending on where they are to be used If the size of the aggregate is more it results in the reduction of cement consumption Coarse aggregate shall be clean and free from elongated flaky or laminated pieces

  • How to Calculate Quantities of Cement Sand and Aggregate

    We have given the materials requirement for M15 M20 M25 and M30 Grade Concretes in the blog Please refer If you want 10 mm and 20 mm aggregate mixed in the concrete mix it in the ratio of 5050 of coarse aggregate volume PCC should be usually

  • Quality Control Of Construction Testing Of Concrete Cubes

    In order to get a relatively quicker idea of the quality of concrete optional test for 7 days compressive strength of concrete be carried out 6 Cubes of 150 x 150 x 150 mm size the nominal size of aggregate does not exceed 38 mm shall be cast 3 for 7days testing and 3 for 28days testing A set of

  • M30 Grade of Concrete Mix Design Procedure with OPC

    20 mm 645 Kg 125 mm 639 Kg sand 812 Kg Dosage of admixture by the Weight of Cement 045 of cement weight 180 Kg Note In moisture correction Weights of Aggregate and water can be replaced by the weights of the free moisture on Aggregates Concrete Mix Design Ratio for M30 M30 mix ratio 1 25 35

  • Aggregates for Concrete

    20 mm aggregate Common aggregates Crushed Stone and Manufactured Sand Stone is quarried crushed and ground to produce a variety of sizes of aggregate to fit both coarse and fine specifications Gravel Gravel is formed of rocks that are unconnected to each other The Wikipedia entry explains that Gravel is composed of

  • Concrete Mix Design Illustrative Example M30 Grade M20

    From Table 3 of IS 10262 2009 Volume of coarse aggregate corresponding to 20 mm size and fine aggregate Zone I 060 Note 1 In the present case watercement ratio is 05So there will be no change in coarse agreegate volume ie 060

  • Aggregates for Concrete

    shows these limits for fine aggregate and for one size of coarse aggregate There are several reasons for specifying grading limits and nominal maximum aggregate size they affect relative 82 Design and Control of Concrete Mixtures EB001 Fig 54 Range of particle sizes found in aggregate for use in concrete 8985 Fig 55

  • Mix Design for Pumped Concrete with PPC OPC OPCFlyash

    In the same way 10 mm 20 mm and 40 mm aggregates shall be combined in the ratio of 1153 to get a 40 mm graded coarse aggregate Fine aggregate of Zone II as per IS 3831970 is generally suitable for pumped concrete provided 15 to 30 sand should pass the 300 micron sieve and 5 to 10 percent should pass the 150 micron sieve

  • Mix Design for Pumped Concrete with PPC OPC

    In the same way 10 mm 20 mm and 40 mm aggregates shall be combined in the ratio of 1153 to get a 40 mm graded coarse aggregate Fine aggregate of Zone II as per IS 3831970 is generally suitable for pumped concrete provided 15 to 30 sand should pass the 300 micron sieve and 5 to 10 percent should pass the 150 micron sieve

  • What Is Cover in Concrete Clear Cover in Beams Slab

    Clear cover in footings Mostly in the case of footing structure it directly relies on ground or soil or in some cases the PCC layer is there to get hard and level surface for mesh made by reinforcing bars This mesh rests on concert cover to maintain space between soil or bar to filled concrete in it hence typically covered used is 70mm and 50 mm for PCC

  • Forensic Investigation of AC and PCC Pavements with

    Jul 20 2010 A7 Fine Aggregate Characterization Data LML Project 5536 A8 A8 Air Void System and Cement Paste Content Data LML Project 5536N A10 A9 Characterization of the Presence and Extent of Cracking Distress in the ODOT Slag Aggregate PCC Pavement Cores A11 A10 Property Data on Slag Aggregate PCC Pavement Cores Examined in the Forensic

  • CEMENT CONCRETE MIX DESIGN Dronacharya

    aggregate mm Water content including surface water per m of concrete kg Sand as of total aggregate by absolute volume 10 200 40 20 186 35 40 165 30 26 31 Step 5 Estimation of Coarse Aggregate Proportion For WC ratio of 05 use following Table

  • 167501 Section 500 PORTLAND CEMENT CONCRETE

    plus 125 mm and the minus 125 plus 63 mm primary size fractions d Type 3 Coarse Aggregate Use coarse aggregate meeting one of the following requirements Limestone or a blend of limestone and dolomite having an acidinsoluble residue content not less than 200 Dolomite