Ch8 concrete test

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    Properties and Testing of Hardened Concrete _____________________________ Compressive Strength -

    .

    Working Stress Characteristic Strength .

    - .

    / / -

    . / / (

    . ) / --

    ) -( :

    . . . .

    .

  • -

    . ) -(

  • ./

    : ___________________

    .

    .

    . (/

    ). - .

    ).-(

    . ) -( . ) -(

    /

  • -

    C3S C2S

    C3S C2S C4AF. C3A

    % .

    C2S C3S

    C3S .

    .

    .

    .

    ) -( . .......

    ) -( ) - (.

    .

    . ) -(

  • ./

    . ) -(

    //

    . ) -(

    C3S

    C2S

    C4AF

    C3A

    C3S

    C2S

    C4AF

    C3A

  • -

    : ________________

    .

    . ) -(

    ) -( . .

    /

    ). -(

    .

    ) -( . ) -(

    350 - 300 - 250 - 200 - 150 -

    /

    2 3 4 5 6 7

  • ./

    : ____________________

    ) /(

    Strength .Durability

    High Strength Concrete

    High Performance Concrete.

    ) /(

    ). (

    . ) /(

    ) -(

    .

    . ) -( . ) -(

    -

    -

    -

    -

    -

    -

    -

    /

    /

    % -

    %-

    -%

  • -

    : ____________________

    Strength Gain

    . .

    .

    . .

    ) -( .

    .

    Rate of Strength Gain .

    .

    .

    .

    .

    ) - ( .

    .

  • ./

    . ) -( )(

    /

    /

    . ) -(

    ) (

    ) (

    - - - - - - -

  • -

    : ______________________________

    : ) -(

    . .

    .

    .

    .

    . ) -(

  • ./

    .

    .

    . .

    . ) ( ). -(

    ) -(

    .

    . ) -(

    )(

  • -

    : ____________________________

    ). -(

    .

    ) -( ) /(

    ) -( .

    ) / ( )./(

    (ASTM C 457) ) /( ) -( )/(

    . ) -(

    -

    -

  • ./

    : ________________

    . .

    Deformation

    . .

    .

    ) -( .

    ) -( .

    . ) -( . ) -(

  • -

    : _______________

    . .

    QM a@pbb@j

    .

    .

    .

    .

    RM @b@ac@jbjna

    .

    .

    .

    .

  • ./

    . ) -(

    SM bnya@i@za@bjng@b@a@

    . ). -(

    - -

    .

    . .

    .

    .

    P

    P

  • -

    TM zna@;

    .

    //

    .

    .

    .

    : _______________

    .

    .

    % .

    .

    .

  • ./

    --

    .

    .

    ). -( .

    . Splitting

    ) -( % .

    . ) -(

  • -

    . ) -(

    Compressive Strength Test --

    .

    :

    = .

    :

    ( )

    % .

  • ./

    .

    .

    ) ( ) (

    .

    .

    .

    -

    .

    . Capping

    ) -( . . .

    . ) -(

    // :

    /

  • -

    . ) -(

    . ) -(

  • ./

    _______________________ __ Tensile Strength - --

    (

    )

    % . % %

    ) -( ) -(

    / . /

    : -

    % = : =

    . ) -(

    -

    % = =

    - % - % - % - % - % - %

  • -

    /

    -

    . ) -( --

    :

    : Direct Tensile Strength _________________________________________

    ).-(

    - .

    -

    .

    Pmax / = =

    A

    / -) (

    - - - - -

  • ./

    . ) -(

    .

    : ) ( Indirect Tensile Strength ____________________________________________________

    .

    / ) = (

    2 P / =

    DL :

    P = ....... = D .......

    L = .......

    . ) -(

    D

    P

    P L

  • -

    %

    ). (

    ). -( % . %

    . ) -(

    ). -( k

    . 2 P

    ./ k = DL

    . ) -(

    P

    P

    2P DL =

    D 12

    D 12

    +

    -

    -

    5 D 6

    P

    P

    P

    P

    P

    P

  • ./

    ) - (

    .

    . ) -( )(

    / /

  • -

    ___________________ ________ Bending Strength -

    ( Modulus of Rupture )

    . % -% %.

    . % %.

    .

    :

    .

    .

    ) -(

    .

    . ) -(

  • ./

    Two-Point Loading

    Pure Bending

    - - .

    .

    : ) ( Pmax

    f M .YIb

    max=

    Mmax = Maximum bending moment = Pmax L / 6 ) ( Y = h/2 , I = Moment of inertia = bh3/12

    . ) -(

    . ) -(

  • -

    ____________________ ___ Shear Strength -

    ( )

    . ) -( Torsion

    .

    Diagonal Tension . . % %

    . )-(

    .

    . ) -(

  • ./

    . ) ( ) -(

  • -

    _________________ _________ Bond Strength -

    :

    - - -

    AdhesionFrictionBearing

    .