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BS - WCFR 42.5

Introduction
 These are white hydraulic binders (referred to as white crack resistance double-fast cement) with crack resistance, fast setting and rapid hardening properties, made from active (or inactive) mixed materials such as fast setting rapid hardening high belite sulpho aluminate cement clinker with low content of ferric oxide, moderate amount of gypsum (or industrial by-product gypsum), slag and other active (or inactive) hybrid materials with fine grinding, and the code is BS - WCFR.
Properties

Advantages:

1/ Fast setting, Rapid hardening, high strength; 4h compressive strength can reach 15Mpa, 43Mpa after 28d, suitable to make the high strength products.

2/ Micro expansion, low dry shrinkage, the length change is very small. Dry shrinkage rate is just 1/10 of Portland cement.

3/ Have very good anti-corrosion property in sulfate, chloride, magnesium salt and seawater. Corrosion resistance coefficient >1.

4/ High impermeability, permeation height is 1/5 of Portland cement.

5/ High frozen resistance property, can get the strength of critical intensity of cold in 2h~3h.

6/ Low hydration heat release

7/ PH value is under 10.0 for GRC products.

8/ High whiteness value, the Hunter whiteness is above 70.

9/ Whiskering resistant performance is good

10/ Can be mixed with Portland cement in a proper ratio, can greatly reduce the shrinkage of Portland cement, reduce the cracks.
  • Data

    Physical Properties:

    Item

    Blaine Fineness (m2/kg)  ≥

     Setting Time/min

    28d Free Expansion Rate /%

    Whiteness Value ≥

    Initial≥

    Final≤

    In Water ≤

    In Air ≥

    Standard

    480

    15

    45

    0.08

    -0.05

    70

    a.       The properties can be adjusted if needed.

     

    Grade

    Compressive Strength

    Flexural strength

    4h

    7d

    28d

    4h

    7d

    28d

    42.5

    15.0

    40.0

    50.0

    4.0

    5.0

    6.0

  • Application

    Application area:

     

    1/GRC

    2/Decoration mortar

    3/Interior and exterior wall putty

    4/Indoor and outdoor floor

    5/Cement-based self-leveling mortar

    5/Artificial stone and floor

    6/Thin layer of concrete repair and concrete leveling material

    7/Anticracking rending mortar

    8/Exterior insulation rendering mortar, bonding mortar and tile adhesive

    9/Decorative concrete

    10/Prefabricated concrete

    11/Building reinforcement

    12/ High early strength Non-shrinkage grouts

    13/ Waterproof and plugging material

     

    The free shrinkage rate is just the 1/10~1/8 of the Portland cement, Length change is very small, anticracking property is excellent; High early strength, 4h strength ≥12.5Mpa;Hunter whiteness value is above 70. Good workability, good secrete water resistance, concrete surface made by this cement has no surface dusting; This cement is based on the white double fast high belite csa cement clinker, the main component is C2S-, the C4A3S- content lower than normal csa cement, don’t have any C3A, so the hydration heat release is low; Have micro expansion, shrinkage is small, length change rate is very low, makes the anticracking property is very good. Impermeability performance is more higher than Portland cement; High anti-corrosion property: 180d anti-corrosion factor in 3% sodium sulfate solution is 1.46, in 3% sodium carbonate solution is 1.41 and in 3% sodium chloride solution is 1.51.  On the basis of the above characteristics, highly recommended the following products use this cement:

    (1) Cementitious self-leveling overlay and underlayment (2) Thin layer of concrete leveling material (3) Artificial cement floor (4) Repair mortars.

Method
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