Product Data Sheet
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Sikacrete®-930 UHPC

ONE-COMPONENT, STEEL FIBER-REINFORCED, SELF-CONSOLIDATING ULTRA HIGH-PERFORMANCE CONCRETE (UHPC) WITH DUST REDUCTION TECHNOLOGY

Sikacrete®-930 UHPC is a fiber-reinforced, ultra-high performance concrete (UHPC) containing Portland cement, finely graded sand, steel fibers and other carefully selected components.  Sikacrete®-930 UHPC is gray in color and is packaged in 65 LB bags and 2,000 LB bulk bags. Sikacrete®-930 UHPC is only mixed with potable water and steel fibers; no additional chemical admixtures are required. Sikafiber 6513 UHPC fibers are packaged in 44 LB (20KG) bags. 

  • Ultra-high compressive, flexural, and tensile strengths allowing significant reduction of concrete element sections, concrete volumes and reinforcing steel, resulting in a lightweight and slender structural element profile
  • Possesses strain-hardening properties, a characteristic unique to UHPC
  • Superior impact and abrasion resistant characteristics
  • Superior resistance to cracking caused by shrinkage, thermal stresses and other conditions
  • Very high energy absorbing capacity (toughness)
  • Ultra-compact material resulting in very low porosity and permeability
  • Superior resistance to freeze-thaw cycling and salt-scaling
  • Superior resistance to sulfate attack
  • Excellent bond to parent concrete without requiring a bonding agent
  • Self-consolidating material
  • Designed with natural normal-density non-reactive fine aggregate to eliminate the potential alkali-aggregate reactivity
  • All Sika products are manufactured using ISO 9001:2015 Certified Processes
Product Data Sheet
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Usage

  • Superstructure bridge connections
  • Substructure bridge connections
  • Header joints
  • Grouted fasteners
  • Shear keys
  • Form & pour applications where high strength and low permeability are required

Advantages

  • Ultra-high compressive, flexural, and tensile strengths allowing significant reduction of concrete element sections, concrete volumes and reinforcing steel, resulting in a lightweight and slender structural element profile
  • Possesses strain-hardening properties, a characteristic unique to UHPC
  • Superior impact and abrasion resistant characteristics
  • Superior resistance to cracking caused by shrinkage, thermal stresses and other conditions
  • Very high energy absorbing capacity (toughness)
  • Ultra-compact material resulting in very low porosity and permeability
  • Superior resistance to freeze-thaw cycling and salt-scaling
  • Superior resistance to sulfate attack
  • Excellent bond to parent concrete without requiring a bonding agent
  • Self-consolidating material
  • Designed with natural normal-density non-reactive fine aggregate to eliminate the potential alkali-aggregate reactivity
  • All Sika products are manufactured using ISO 9001:2015 Certified Processes

Packaging

65 lb. (29.5 kg) bag

2,000 lb. (908 kg) bulk bag

Color

Gray Powder

Product Details

Product Information

Shelf Life

12 months from date of production if stored in original, unopened and undamaged sealed packaging (65 lb bags)

6 months for bulk bags

Storage Conditions

Store dry between 40 °F (5 °C) and 85 °F (30 °C)

Protect from moisture. If damp, discard material

Density

150 lbs/cf
Technical Information

Compressive Strength

Age

Strength

1 day

> 10,000 psi

7 days> 14,000 psi

28 days

>22,000 psi

Modulus of Elasticity in Compression

Age

Compressive Modulus

28 days

7,040,000 psi

Tensile Strength

Age

Tensile Strength

28 days

1,200 psi

Splitting tensile strength

Age

Tensile Strength

28 days

2,500 psi

Slant Shear Strength

Age

Shear Strength

1 day

3,200 psi

7 days

3,500 psi

Shrinkage

Age

Length Change

28 days

- 0.031%

Expansion

Age

Length Change

28 days

+ 0.006%

Chloride Ion Ingress

Age

Permeability

28 days

131 Coulombs

Resistance to Alkalinity

Age

Length Change

14 days

+ 0,018%

Freeze-Thaw Stability

Cycles

RDM

300

99.4%

Salt resistance

Cycles

Mass Loss

25

0 lbs / sf

50

0 lbs / sf

Application

Application Information

Substrates

Concrete

Flowability

9 in (spread)

ASTM C 1437

modified per ASTM C 1856

Set Time

6-8 hrs
Consumption

Coverage

Four 65 lb bags of Sikacrete®-930 UHPC mixed with 1/2 bag of Sikafiber®-6513 (9.9% water) yields approximately 2.0 cubic feet
Application steps

SURFACE PREPARATION

  • Surface must be clean and sound. Remove all deteriorated concrete, dirt, oil, grease, and other bond-inhibiting materials from the area to be repaired.
  • Be sure repair area is not less than 1" (25 mm) deep. Preparation work should be done by appropriate means. Obtain an exposed aggregate surface with a minimum surface profile of ± 1/8" (3 mm) (ICR CSP-7-8) on clean, sound concrete.
  • Substrate should be Saturated Surface Dry (SSD) with clean water prior to application. No standing water should remain during application.

MIXING

Materials and substrate temperatures should be between 40 °F (5°C) and 85 °F (30°C). In cold weather, hot water may be used to increase the mix temperature and avoid lengthy set times. Do not place Sikacrete®-930 UHPC when the ambient temperature is below 40°F (5 °C). Refer to ACI 306, “Guide to Cold Weather Concreting”.

Sikacrete®-930 UHPC requires robust equipment for proper mixing. Single bags can be hand-mixed using a drill. A Collomix Xo-55 dual drill is effective in mixing. A suitable-sized mixing pail should be used. 0.77 gallons of potable water per 65 lb bag should be added to the mixing container. The powder should slowly be added to the water while continuously mixing. Mix for 7-8 minutes to achieve a uniform consistency. Add the required steel fibers and mix for another 2-3 minutes until homogeneously mixed.  For larger batches, forced-action, vertical or horizontal shaft mortar mixers can be used. For bulk bag mixing, please contact your local Sika representative. 

CURING TREATMENT

While the performance data listed on this PDS are for air-cured specimens, moist curing will provide the best results. Alternatively, an ASTM C 309 or C 1315-compliant curing compound can be applied once the applied material reaches final set.

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