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Concrete Lab Calculations

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    SLUMP TEST

    Workability requirement of concrete:

    SL.NO PLACING CONDITIONSDEGEREE OF

    WORKABILITY

    SLUMP(mm)

    1Shallow sections and pavement

    using pavesVery low 0-!

    "ass concrete# lightly reinforced

    concrete sections# floor# hand placed

    pavements# canal lining #strip#

    foundation# columns# floors# hand

    pavements# canal lining# strip

    footing

    $ow !-%!

    &

    'earing reinforced sections in

    beams# walls# slabs# columns# slip

    form work# pumped concrete(

    "edium %!-100

    ) *rench fill# in-situ piling 'igh 100-1!0

    CALCULATION:-

    +iven "i, proportions

    .ement

    W/. ratio

    ine aggregate

    .oarse aggregate

    Volume of the slump cone

    equired volume of the mi, for the slump cone

    2uantity of cement required for the slump cone

    2uantity of fine aggregate required for the slump cone

    2uantity of coarse aggregate required for the slump cone

    2uantity of water

    Compac!o" #aco$

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    OBSER%ATION:-

    .ylinder si3e

    Weight of empty cylinder 4w15

    Weight of empty cylinder 6 partially compacted concrete4w5

    w-w1

    weight of cylinder 6 fully compacted concrete 4w&5

    w&-w1

    .ompaction factor

    COMPRESSION STRENGT& OF CONCRETE

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    OBSER%ATION'-

    SL.NOS! o#

    c*+

    W!,

    (K,)

    A$a o#

    oa/!",

    #ac(mm0)

    Comp$11!o"

    oa/ a #a!*$

    (N)

    Comp$11!2

    1$",

    (N3 mm0)

    1

    &

    CALCULATION:-

    7rea of compression surface

    .ompressive strength failure

    8

    SPLITING TENSILE STRENGT&

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    OBSERA%TION:-

    SL.NO S! o# c4!"/$ B$a5!", oa/ (N)Sp!!", "1! 1$",

    (N3mm0)

    1

    &

    CALCULATION:-

    Spliting tensile strength of the specimen is calculated by using

    Where

    9 is the breaking load

    d is the diameter of the specimen in mm

    lis the length of the specimen in mm(

    *Sp1

    *Sp

    FLE6URE STRENGT& OF CONCRETE

    OBSER%ATION:-

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    8f $ mm# l mm b;d mm

    8f $ mm# l mm b;d mm

    .onsidering

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    Biameter

    'eight

    TABULATION:-

    Loa/ KND#o$ma!o"

    S$11 N3mm0 S$a!" = >-?

    D!2 mm

    i5 Stress

    ii5 stress

    iii5 stress

    iv) stress

    i5 strain ii5 strain

    iii5 strain

    !2) 1$a!" @

    F$om ,$ap stress

    Strain

    C

    FLAKINESS INDE6

    DIMENSIONS OF FLAKINESS INDE6

    S! o# a,,$,a (mm)T!c5"11 o# ,a*, (mm)

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    Pa11!", $o*, IS 1!2

    (mm)Ra!"/ o" IS 1!2(mm)

    OBSERA%TION AND CALCULATION

    S! O# A,,$,a !" mm W!, O# T!c5"11 o# W!, o#

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    (mm)Pa11!", $o*,

    IS 1!2 (mm)

    Ra!"/ o" IS 1!2

    (mm)

    OBSER%ATION AND CALCULATION:-

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    S! o# a,,$,a !" mm W!, O#

    A,,$,a

    #$ac!o" pa11!",

    a"/ $a!"/

    (co"1!1!", o# aa1 0> p!c1)

    L", o# ,a*,

    (mm)

    W!, o#

    a,,$,a

    #$ac!o"

    $a!"/ o"

    ", ,a*,

    Pa11!", $o*,

    IS 1!2 mm

    Ra!"/ o"

    IS 1!2 mm

    *otal weight

    Clongation inde, 9/W , 100

    AGGREGATE CRUS&ING STRENGT&

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    CALCULATION:-

    *he ratio of the cut of fines formed to the total weight of sample in each test is e,pressed

    has a percentage( *he result is recorded to the first decimal place(

    Where

    Aweight of fraction passing the appropriate sieve

    7weight of surface dry sample

    *he mean of the two results to the nearest whole number is reported as the aggregate

    crushing value of the si3e of material tested(

    Weight of surface dry sample

    Weight of fraction passing sieve

    TABULATION:-

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    Nom!"a IS 1!2 mm

    D!am$ o# c4!"/$

    o + *1/ (mm)

    S! o# IS 1!21 #o$

    1pa$a!", #!"1Pa11!", $o*, IS

    1!2 mm

    Ra!"/ o" IS 1!2

    mm

    7ggregate crushing value

    AGGREGATE IMPACT %ALUE:-

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    CALCULATION:-

    *he ratio of the weight of fines to the total sample weight in each test is e,pressed as a

    percentage # the result being recordable to the first decimal place(

    Where

    Aweight of fraction passing the appropriate sieve

    7weight of surface dry sample

    8mpact value A /7 D 100

    8mpact value

    AGGREGATE ABRATION TEST:-

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    SPECIFICATION FOR LOS ANGLES TEST:-

    GRAD

    ING

    WEIG&T IN ,m OF EAC& TEST SAMPLER IN SI7E

    NO OFSP&ERES

    WEIG&T

    OFC&ARGE

    (,m)9>->

    B-C>

    C>-?>

    ?>-0C

    0C-0>

    0>-:0.C

    :0.C-:>

    :>-.B

    .B-?.

    C

    ?.

    C-0.B

    E*olerance of F percent is permitted(

    OBSER%ATIONS:

    Cmpty weight

    =riginal weight of aggregate sample W1

    Weight of sample retained on 1(%mm sieve W

    $oss in weight due to wear W& W1- W

    7brasion value 4W&/W15 , 100

    PENETRATION TEST ON BITUMEN

    OBSER%ATION:

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    9assing temperature

    oom temperature

    9eriod of cooling in atmosphere

    9eriod of cooling in water path

    7ctual test temperature

    TABULATION:-

    SL.NO PENETROMETER DIAL READING STANDARD

    DE%IATIONINITIAL FINAL PENETRATION

    %ISCOSITY TEST

    %ISCOSITY GRADING OF BITUMEN AND CONSISTENCY PROPERTIES

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    SL.NO%ISCOSITY

    GRADING

    ABSOLUTR

    %ISCOSITY AT

    >>C

    KINEMATIC

    %ISCOSITY AT

    > 131 (m!")

    RANGE OF

    PENETRATION

    %ALUE AT

    0>CC

    %ISCOSITY GRADING ADOPTED IN INDIA FOR PASSING APPLICATION IS AS

    FOLLOWS

    V+)0 Gse in high stressed area like intersection S1 toll pla3a truck terminals truck lay-byes

    in lieu of &0/)0 grade

    V+&0 9aving application areas like most part of lieu of 0/%0 grade of bitumen

    V+0 9aving 7pplication in cold climate conditions of orth 8ndia and in high altitude

    regions

    V+10 Spraying application# pouring application in cold regions in lieu of H0/100 grade

    OBSER%ATION:

    "aterial Aitumen

    +rade

    Specified temperature

    Si3e of orifice

    7ctual test temperature

    Viscosity

    DUCTILITY TEST

    DUCTILITY %ALUE REUIREMENTS FOR PA%ING BITUMEN AS PER BIS

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    PROPERTY %G> %G0> %G> %G?>

    Buctility at !oc

    cm minimum

    after thin film

    oven test

    OBSER%ATION'

    +rade of bitumen

    9ouring temperature (

    PERIODS OF COOLING

    15 8n air

    5 8n water bath before trimming

    &5 8n water bath after trimming


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