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  • Baustoffdesign

    Thomas A. BIER

    Institut für Keramik, Glas- und Baustofftechnik, Leipziger Straße 28, 09596 Freiberg,

    Baustoffdesign Funktionen - Eigenschaften

  • Baustoffdesign

    Material

    Chemie

    Mineralogie

    Feinheit (SO, PSD)

    Zemente PZ, TZ, C$

    Füllstoffe

    Organische Stoffe Dispergierbare Pulver

    Zusatzmittel

    Material

    Chemie

    Mineralogie

    Feinheit (SO, PSD)

    Zemente PZ, TZ, C$

    Füllstoffe

    Organische Stoffe Dispergierbare Pulver

    Zusatzmittel

    Verfahren

    Mischen und Erhärtung

    Temperatur Autoklav

    Trocknen

    Pressen /Extrudieren Ziegel

    KS Stein

    Macro Defect Free

    DSP

    Funktionen

    Festigkeit

    Konsistenz

    Verarbeitung Viskosität

    Fließgrenze

    Offene Zeit

    Dauerhaftigkeit

    Farbe/Optik

    Dämmung Wärme

    Schall

    Schwinden/Quellen

    Permeabilität

    Elektr. Leitfähigkeit

    Haftzugfestigkeit

  • Baustoffdesign

    Material

    Zemente PZ, TZ, C$

    Füllstoffe

    Organische Stoffe Dispergierbare Pulver

    Zusatzmittel

    Material

    Zemente PZ, TZ, C$

    Füllstoffe

    Organische Stoffe Dispergierbare Pulver

    Zusatzmittel

    Verfahren

    Mischen und Erhärtung

    Funktionen

    Festigkeit

    Konsistenz

    Verarbeitung Viskosität

    Fließgrenze

    Offene Zeit

    Dauerhaftigkeit

    Farbe/Optik

    Schwinden/Quellen

    Haftzugfestigkeit

  • Baustoffdesign

    Performance Self flow values CSTB cylinder

    Gel or open time cup or knife test

    Setting time Vicat needle

    Mechanical strength prisms 4 x 4 x 16

    Performance Self flow values CSTB cylinder

    Gel or open time cup or knife test

    Setting time Vicat needle

    Mechanical strength prisms 4 x 4 x 16

    Measuring Mechanical Performance

  • Baustoffdesign

    Hobart Mischer

  • Baustoffdesign

    Slurry preparation

    700 rpm

    Slurry mixing method

    Chemical stirrer

    0.1

    0.2

    0.3

    1 2 30 7 Mixing time (min)

    M ix

    in g

    en er

    gy (J

    )

    4 5 6

    Grout slurry

    Time periods for mixing the slurry

    2 min normal

    7 min excessive

  • Baustoffdesign

    Abbindezeit nach Vicat: DIN EN 196 Teil 3

  • Baustoffdesign

    Technological properties: Setting Time Method

    Setting: Automatic Vicat needle test (EN 196)  Penetration depth = f(time)

  • Baustoffdesign

    06:00 07:00 08:00 09:00 10:00 11:00 12:00 13:00 14:00

    0

    10

    20

    30

    40

    Starvis 3003 F Xanthan Gum Potato starch F 9110 MHEC 6000 PR K 200 M

    P en

    et ra

    tio n

    de pt

    h [m

    m ]

    Time [hh:mm]

    Technological properties Setting Time Results

  • Baustoffdesign

    Typical technological tests: - V-funnel times and self flow values

    Technological properties: Flow Methods

  • Baustoffdesign

  • Baustoffdesign

    Flow value, Flow decay, Working time

    Experiment

    Result

    Time

    Decay

    Working time

    Flow value

    d1d0 = 100 mm

    70 mm

    50 mm

    (Verarbeitbarkeit – Frischbeton bzw. Mörtel)

  • Baustoffdesign

    Entrained Air

    Sedimentation

    Self Compaction

    Flow Value [mm]

    Stagnation Fu

    nn el

    T im

    e [s

    ]

    Workability Evaluation according to DAfStB

    DAfStb-Richtlinie Selbstverdichtender Beton (Ausgabe Nov, 2003) ANHANG Q; Q.1 Seite 32

  • Baustoffdesign

    Plastisizers and Stabilisers

  • Baustoffdesign

    After 3 min: 300g mortar paste taken from top and bottom

    Granulometry

    Technological properties: Sedimentation Method

    Early sedimentation: 1kg mortar paste filled into cylinder

  • Baustoffdesign

    Later sedimentation: Cubes, cut after 7d

    Polymer Gum Potato starch Cellulose 6000 Cellulose 200

    Technological properties: Sedimentation Results

    Poymer Potato starch

    just fines

    Early Later not observed

    Gum Cellulose 6000

    Polymer Cellulose 200 Starch

  • Baustoffdesign

    Workability Boxes according to Wallevik

    O.H. Wallevik, J.E. Wallevik, Rheology as a tool in concrete science: The use of rheographs and workability boxes, Cem. Concr. Res. (2011)

  • Baustoffdesign

    Workability Boxes for SCC

    O.H. Wallevik, J.E. Wallevik, Rheology as a tool in concrete science: The use of rheographs and workability boxes, Cem. Concr. Res. (2011)

  • Baustoffdesign

    Workability Boxes for different Applications

    O.H. Wallevik, J.E. Wallevik, Rheology as a tool in concrete science: The use of rheographs and workability boxes, Cem. Concr. Res. (2011)

  • Baustoffdesign

    Rheological properties: Flow Curves Methods

    Haake RheoStress 150 with building materials cell Shear stress = f(shear rate)

    0 50 100 150 200 250 300 350 0

    50 100 150 200 250 300

    Sh ea

    r r at

    e [1

    /s ]

    Time [s]

  • Baustoffdesign

    Different Plastisizers in SLU

    Continuous flow conditions

    100

    1000

    10000

    100000

    1000000

    0.01 0.1 1 10 100 1000 Shear Rate (1/s)

    A pp

    ar en

    t V is

    co si

    ty (m

    Pa .s

    ) B_MF1641F

    A_PP100F

    C_MF2641F

    D_MF2651F E_Casein

    A_PP100F

    Oscillation flow conditions

    100

    1000

    10000

    100000

    1000000

    0.01 0.1 1 10 100 1000  (rad/s)

    |  *|

    (m Pa

    .s )

    B_MF1641F A_PP100F C_MF2641F D_MF2651F

    E_Casein

    Oscillatory flow conditions

    0.1

    1

    10

    100

    1000

    10000

    0.01 0.1 1 10 100 1000  (rad/s)

    G ',

    G ''

    (P a)

    B_MF1641F

    D_MF2651F

    E_Casein

    G'

    G''

    Rheometer

    Concentric-cylinder

    [Tomohiro Emoto, Thomas A. Bier:”Rheological behavior as influenced by plasticizers and hydration kinetics” Cement and Concrete Research 37 (2007) ]

  • Baustoffdesign

    Rheological properties: Flow Curves Shear Thinning behavior

    0

    5000

    10000

    15000

    20000

    25000

    30000

    35000

    0 50 100 150 200 250 300

    Scherrate (1/s)

    Sc he

    rs pa

    nn un

    g (P

    a)

    Polymer

    Starch Cellulose 200

    Gum Cellulose 6000

  • Baustoffdesign

    0 50 100 150 200 250 300 0

    100

    200

    300

    400

    500

    600

    700

    800

    900

    1000 Starvis 3003 F Xanthan Gum Potato starch F 9110 MHEC 6000 PR K 200 M

    S he

    ar s

    tre ss

    [P a]

    Shear rate [1/s]

    Rheological properties Flow Curves Results

  • Baustoffdesign

    Festigkeiten

  • Baustoffdesign

    Rheology and Structuring : Richards Locher Model

    • Nucleation • Growth of hydrates

    • Solubility • Particle –

    Particle Interaction

    • Massive Hydration • W/C Ratio

    • Intrinsic Strength • Porosity

    I II

    III

    IV

  • Baustoffdesign

    Phase Development w/ Time

    After 5 min water contact

  • Baustoffdesign

    Phase Development w/ Time

    After 140 min water contact

  • Baustoffdesign

    Phase Development w/ Time

    After 140 min water contact

  • Baustoffdesign

    Phase Development w/ Time

    After 15 hrs water contact

  • Baustoffdesign

    Phase Development w/ Time

    After 7 days water contact

  • Baustoffdesign

    Phase Development w/ Time

    After 56 days water contact

  • Baustoffdesign

    Phase Development w/ Time

    After 360 days water contact

  • Baustoffdesign

    Phase Development w/ Time

    After 36 6 days water contact

  • Baustoffdesign

    Phase Development w/ Time

    After 600 days water contact

  • Baustoffdesign

    • Nucleation • Growth of hydrates

    • Solubility • Particle – Particle Interaction w/SP

    • Intrinsic Strength • Porosity

    I II

    III

    IV

    Rheology and Structuring : Self Levelling Underlayments

    Oscillation flow curves

    0

    10

    20

    30

    40

    50

    60

    70

    80

    90

    0,1 1 10 100 1000

     (rad/s)

     (°

    )

    S6A_MFPP100F S6B_MF1641F S6C_MF2641F S6D_MF2651F S6F_Casein

    Calorimetry (Versatz6b_Early time)

    0

    2

    4

    6

    8

    10

    12

    0 1 2 3 4 5

    Time (hours)

    H ea

    t E vo

    lu tio