King Packaged Materials Co. CONCRETE REPAIR Concrete King MS-S6 SCC Concrete 30kg 20006458 construction essentails  construction companies near me construction companies Construction

King MS-S6 SCC Concrete 30kg

20006458
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MS-S6 SCC is a high performance, pre-packaged, self-consolidating, concrete repair material. It is a pre-blended, pre-packaged, high performance, flowable, concrete material containing Portland cement, silica fume, 6 mm (1/4 inch) stone and other carefully selected admixtures.

• Superior plastic properties provide a fluid mix with self-consolidating characteristics without bleeding or segregation
• Easily consolidated without rodding or vibrating
• Air-entrainment provides superior resistance to freeze-thaw cycling and salt-scaling in the presence of de-icing salts
• Excellent pumpability
• Properties similar to conventional concrete, thus offering excellent compatibility with existing concrete
• Improved resistance to sulphate attack

FEATURES & BENEFITS

• Superior plastic properties provide a fluid mix with self-consolidating characteristics without bleeding or segregation
• Easily consolidated without rodding or vibrating
• Air-entrainment provides superior resistance to freeze-thaw cycling and salt-scaling in the presence of de-icing salts
• Excellent pumpability
• Properties similar to conventional concrete, thus offering excellent compatibility with exisiting concrete
• Improved resistance to sulphate attack
• Very low permeability
• Compatible with integral, pre-applied and/or post-applied corrosion inhibitors*
• Low shrinkage
• Designed with natural normal-density non-reactive fine and coarse aggregates to eliminate potential alkali-aggregate reactivity (AAR)
• All KING products are manufactured using ISO 9001:2015 Certified Processes

*For more information regarding the use of a corrosion inhibitor in conjunction with MS-S6 SCC, please contact your KING Technical Representative.

USES

• Partial depth, formed repairs of concrete beams, columns, soffits, and/or shear walls in bridges, parking garages or other concrete structures
• Place MS-S6 SCC at a minimum thickness of 38 mm (1½ inches)
• Use MS-S6 SCC for closed formed repairs only

PROCEDURES

Surface Preparation: All repair surfaces must be free from dust, oil, grease or any other foreign substances that may interfere with the bond of the material. Remove all delaminated or unsound concrete providing a roughened surface and a minimum of 25 mm (1 inch) clearance behind any corroded reinforcing steel. The perimeter of the repair area should be saw-cut a minimum of 20 mm (¾ inch). Clean the area to be repaired with potable water, leaving the concrete saturated but free of standing water (SSD).

Mixing: Place 75% of required potable water into mixer and slowly introduce entire bag of MS-S6 SCC. Add balance of required water slowly while mixer is running, not exceeding maximum recommended volume of water. Maximum recommended volume of water is 3.15 L (0.83 US gallon) per 30 KG (66 lb) bag. Continue mixing for a minimum of 3 minutes and stop only when material has obtained a consistent homogeneous mix. Restrict mixing time to 2 minutes when using a drill/paddle style mixer.

Placing: Mix and substrate temperatures should be maintained between 5 °C and 30 °C (40 °F and 86 °F). Do not place MS-S6 SCC when ambient temperature is below 5 °C (40 °F). Refer to ACI 306, “Guide to Cold Weather Concreting”. In warm weather, ice water may be used to cool mix temperature and avoid short working time. When ambient temperature is above 30 °C (86 °F), refer to ACI 305, “Guide to Hot Weather Concreting”.

Fill the formwork with water in order to fully saturate the substrate and formwork. Repair any leaks in the formwork, as the formwork should be watertight. Drain water before introducing the MS-S6 SCC. Gravity feed or pump MS-S6 SCC into forms and allow mix to fully encapsulate any existing rebar. Rodding and vibrating of mix is not required. Forms should not be removed until mix has attained a minimum compressive strength of 25 MPa (3625 psi). Refer to ACI 347, “Guide to Formwork for Concrete”.

Placing (for overhead or vertical pumping applications): Follow pump manufacturers recommendations for pumping. Formwork should contain drainage outlets for pre wetting substrate. Fill the formwork with water in order to fully saturate the substrate and formwork. Repair any leaks in the formwork, as the formwork should be watertight. Drain water before introducing the MS-S6 SCC. For soffit repairs, vent holes should be included for air venting. Entry points for MS-S6 SCC should not be spaced more than 600 mm (24 inches) apart. An acceptable form release agent should be used for easy removal of forms. Pump mix into forms ensuring that no voids are left in any locations. Forms should not be removed until mix has attained a minimum compressive strength of 25 MPa (3625 psi). Refer to ACI 347, “Guide to Formwork for Concrete”.

CURING

Curing is essential to optimize physical properties of the concrete and minimize plastic shrinkage. Curing should begin immediately after forms are removed in accordance with ACI 308 “Guide to Curing Concrete”. Moist curing should be conducted for a minimum period of 7 days after placement. Alternatively, moist cure for a minimum period of 24 hours and apply a curing compound that complies with ASTM C 309. Curing is particularly critical in rapid moisture loss conditions such as high temperatures, direct sun, high winds and low humidity.

TECHNICAL DATA

The following data is representative of typical values achievable under laboratory conditions. Results in the field may vary.

MASS DENSITY

ASTM C 39 2,300 kg/m3 (143 lb/ft3)

 

SLUMP FLOW

ASTM C 1611 650 mm ± 50 mm
(26 inches ± 2 inches)

 

J-RING PASSING ABILITY

ASTM C 1621 0 to 25 mm (0 to 1 inch)
(No visible blocking)

 

COMPRESSIVE STRENGTH

ASTM C 39
1 Day 10 MPa (1500 psi)
3 Day 25 MPa (3625 psi)
7 Day 30 MPa (4350 psi)
28 Day 40 MPa (5800 psi)

 

FLEXURAL STRENGTH

ASTM C 78
7 Day 7.5 MPa (1075 psi)
28 Day 10.5 MPa (1525 psi)

 

MODULUS OF ELASTICITY

ASTM C 469
28 Day 25.3 GPa (3.7 x 106 psi)

 

AIR CONTENT

ASTM C 457 4.0%-9.0%

 

BOND STRENGTH

CSA A23.2-6B (MODIFIED)

28 Day

1.5 MPa (215 psi)

 

BOND STRENGTH BY SLANT SHEAR

ASTM C 882

28 Day

21 MPa (3000 psi)

 

UNIAXIAL DRYING SHRINKAGE

ASTM C 157
30 Day 600 μm/m

 

FREEZE-THAW RESISTANCE

ASTM C 666 99%
(Excellent durability factor)

 

SALT-SCALING RESISTANCE

ASTM C 672
50 Cycles 0.03 kg/m² (0.006 lb/ft²)

 

CHLORIDE ION PENETRABILITY

ASTM C 1202 750 Coulombs

 


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