Product Data Sheet Show all documents

SikaEmaco®-1061 EX

(formerly MEmaco T 1061EX)

Low Dust, Rapid Setting, Cement Based, Pre-extended, Concrete Repair Mortar with Increased Working Time

SikaEmaco®-1061 EX is a one component, shrinkage compensated, very rapid setting, cement based, pre-extended mortar with increased working time. SikaEmaco®-1061 EX is designed for the repair of horizontal, flat concrete surfaces in applications from 1.5 inches (38 mm) thick to full depth.

• Pre-extension with coarse aggregate at the factory ensures quality and saves contractor labor • Low dusting for added worker comfort and safety • Extended Application Time (i.e. increased working time after mixing) • Extra low permeability helps minimize chloride intrusion • Rapid setting for quick turnaround repairs • Low residual moisture; can be prepared and coated in as little as 6 hours at 73 °F (23 °C) • Excellent Freeze / Thaw resistance • Shrinkage compensated to minimize cracking from drying shrinkage; reduces stress at the bond line • Proprietary Portland cement based blend that bonds to carbonated and non-carbonated concrete substrates
Product Data Sheet Show all documents

Usage

SikaEmaco®-1061 EX may only be used by experienced professionals • Interior and exterior applications • On grade, above and below grade concrete repairs • Horizontal, flat surfaces • Applications requiring high early strength gain • Structural concrete repairs for concrete roadways, parking facilities, industrial plant floors, walkways, bridge decks, balconies, etc. • Partial and full depth concrete repairs • Filler for voids and cavities

Advantages

• Pre-extension with coarse aggregate at the factory ensures quality and saves contractor labor • Low dusting for added worker comfort and safety • Extended Application Time (i.e. increased working time after mixing) • Extra low permeability helps minimize chloride intrusion • Rapid setting for quick turnaround repairs • Low residual moisture; can be prepared and coated in as little as 6 hours at 73 °F (23 °C) • Excellent Freeze / Thaw resistance • Shrinkage compensated to minimize cracking from drying shrinkage; reduces stress at the bond line • Proprietary Portland cement based blend that bonds to carbonated and non-carbonated concrete substrates

Packaging

50 lb. (22.7 kg) polyethylene lined bags

Color

Gray powder

Product Details

Sustainability / Certifications / Approvals

APPROVALS / STANDARDS

Rapid Hardening as defined by ASTM C928 (Type R2)
Product Information

Chemical Base

SikaEmaco®-1061 EX is a blend of Portland cement, graded aggregates, shrinkage compensating agents and set control additives

Shelf Life

12 months from date of production if stored properly in original, unopened and undamaged packaging

Storage Conditions

Store in unopened packaging in cool, clean, dry conditions at 40 - 95 °F (4 - 35 °C). Protect from moisture. If damp, discard material.
Technical Information

Compressive Strength

3 hrs3,000 psi (20.7 MPa)

1 day

4,000 psi (27.6 MPa)

28 days

8,000 psi (55.2 MPa)

28 days

7,400 psi (51.0 MPa)

Modulus of Elasticity in Compression

28 days

6.07 x 106 psi (41.8 GPa)

Flexural Strength

1 day

755 psi (5.2 MPa)

28 days

1,070 psi (7.4 MPa)

Shrinkage

28 days (air cured)

- 0.03%

Expansion

28 days (wet cured)

+ 0.01%

Coefficient of Thermal Expansion

7.2 x 10-6 in/in/°F

(13.0 x 10-6 mm/mm/°C)

Freeze Thaw De-Icing Salt Resistance

28 days

No Scaling

Resistance to Weathering

28 days

95.6%

Relative Dynamic Modulus (RDM) at 300 cycles

 

Slant Shear Strength

Bond Strength by Slant Shear

1 day

2,300 psi (15.8 MPa)

28 days

2,600 psi (17.9 MPa)

Mortar scrubbed into mechanically prepared, SSD substrate

Splitting tensile strength

1 day

425 psi (2.9 MPa)

28 days

525 psi (3.6 MPa)

Application

Application Information

Mixing Ratio

3.25 pints (1.54 liters) of clean, potable water per 50 lb. (22.7 kg) bag

Layer Thickness

Minimum

Maximum per Lift

1.5 inches (38 mm)

8 inches (203 mm)

Thicker applications may be possible. Please contact Sika® Technical Services at 800 933 7452 for more information.

Product Temperature

65 - 75 °F (18 - 24 °C) recommended.

Ambient Air Temperature

Minimum 40 °F (4 °C) / Maximum 95 °F (35 °C)

Substrate Temperature

Minimum 40 °F (4 °C) / Maximum 95 °F (35 °C)

Application Time

Place SikaEmaco®-1061 EX within 25 minutes after mixing 

Set Time

Initial Set Time

Approximately 50 minutes

Final Set Time

Approximately 80 minutes

Consistency

Initial Slump

Approx. 3 to 5 inches

(76 to 127 mm)

Fresh mortar density

148 lbs/ft3 (2.37 g/cm3)
Consumption

Coverage

0.38 ft3 (0.011 m3)
Application steps

APPLICATION INSTRUCTIONS

SURFACE PREPARATION

Concrete: Must be clean, structurally sound and sufficiently cured.

  • Remove all deteriorated concrete, dirt, oil, grease, contaminants and other bond inhibiting materials from the area to be repaired. Preparation work should be done by high pressure water jetting, sand blasting or other appropriate mechanical means to obtain an exposed aggregate surface profile of a minimum CSP - 7. Refer to current ICRI Guideline no. 310.2R for surface preparation requirements to permit proper bond.
  • Saw cutting of edges with a minimum depth of 1.5 inches (38 mm) is recommended, and a dovetail cut is preferred.
  • Substrate should be saturated surface dry (SSD) with clean water prior to application. No standing water or frost should remain during scrub coat and installation of product. 

Steel: Remove all rust and scale from exposed reinforcing steel in accordance with ICRI Technical Guideline No. 310.1R.

  • Thoroughly prepare by mechanical means to a bright, clean and dry condition.
  • For additional protection from future corrosion, treat the prepared reinforcing steel with Sikagard® P 8100 AP, Sika® Armatec®-110 EpoCem® or Sika® Armatec® 1C. Consult the current product data sheets for additional information.

MIXING

  • Precondition SikaEmaco®-1061 EX to 65 - 75 °F (18 - 24 °C) before mixing.
  • Add 3.25 pints (1.85 liters) of potable water for each bag of SikaEmaco®-1061 EX to a clean, appropriate mixing container. Do not overwater.
  • Slowly add the entire contents of the bag to the water while continuously mixing with a low-speed rotary drill (400 - 600 rpm) and mortar paddle, or appropriate mortar mixer.
  • Mix for a minimum of 3 minutes until uniformly blended and fully homogeneous. Do not mix for longer than 5 minutes. Do not overmix.

APPLICATION

  • After removing all standing water and frost from the mechanically prepared surfaces, thoroughly scrub a thin layer of SikaEmaco®-1061 EX into the SSD surface with a stiff bristled broom or brush. Do not dilute the scrub coat with water. Do not apply more scrub coat than can be covered with mortar before it dries. Do not retemper scrub coat.
  • Immediately place the thickness of SikaEmaco®-1061 EX needed to complete the repair onto the wet scrub coat from one side of the prepared area to the other. Work the material firmly into the bottom and sides of the repair area to ensure a good bond. Be sure to work into all pores and voids. Level SikaEmaco®-1061 EX and screed to the elevation of the existing concrete.
  • Finish the completed repair, as required, taking care not to overwork the surface. To assist in the finishing process, use Sika® Film finishing aid. Consult the current product data sheet for additional information.
  • The recommended application temperature range of SikaEmaco®-1061 EX is from 40 to 95 °F (4 to 35 °C). Refer to ACI 305, the 'Guide to Hot Weather Concreting' and ACI 306, the 'Guide for Cold Weather Concreting' when extreme ambient and substrate temperatures prevail. Thinner placements will be more sensitive to temperature conditions.

CURING TREATMENT

  • Per ACI recommendations for Portland cement based concrete, moist curing of exposed surfaces is required.
  • Protect freshly applied SikaEmaco®-1061 EX from direct sunlight, wind, rain and frost. To prevent from freezing, cover with insulting material (e.g. curing blanket).
  • Moist cure surfaces after finishing with wet burlap and polyethylene, a fine mist of water, or with a water based, compatible* curing compound compliant with ASTM C309 and/or preferably ASTM C1315 (e.g. Sikagard®-1315 KNS). 

* Pretesting of non-Sika, water based curing compound is recommended.

CLEANING OF TOOLS

Uncured SikaEmaco®-1061 EX can be cleaned and removed from tools, equipment and surfaces with clean water immediately after placement. Cured material must be removed mechanically.

 

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