Product Data Sheet Show all documents

Sika® Ucrete® RG29 NA

HIGH STRENGTH CEMENTITIOUS URETHANE COVE BASE, VERTICAL AND DETAILING MORTAR

Sika® Ucrete® RG29 NA is a vertical grade, solid color, water dispersed polyurethane based/cement and aggregate mortar used for detailing, vertical work and cove base. Sika® Ucrete® RG29 NA has a finely textured smooth aggregate appearance that provides excellent resistance to abrasion, impact, chemical attack and other physical aggression. Sika® Ucrete® RG29 NA is normally installed at 1/8" - 1/4" thickness and can be applied vertically. Typical height for cove base is 4" - 6" but can be applied higher.

  • Can be applied on green concrete, typically 7-10 days. Full 28 days cure time is not required.
  • Can be applied over partially cured concrete substrates (> 4% mass (pbw –part by weight) as measured with Tramex® CME/CMExpert type concrete moisture meter surface moisture).
  • Can be applied to concrete substrates where <100 % relative humidity is measured as per ASTM F2170.
  • Resists a very wide range of organic and inorganic acids, alkalis, amines, salts and solvents. Consult Sika Technical Service for full details.
  • Similar coefficient of thermal expansion of concrete allowing movement with the substrate through normal thermal cycling. It will perform and retain its physical characteristics through a wide temperature range from -40 °F (-40 °C) up to 248 °F (120 °C).
  • Steam cleanable at 1/8'' to 1/4'' (125 to 250 mils) thickness.
  • Non-tainting, odorless.
  • Behaves plastically under impact / deforms but will not crack or debond.
  • High abrasion qualities result from its aggregate structure.
  • Maintain and extend existing expansion joints up through the Sika® Ucrete® Flooring System.
  • Minimal maintenance costs, superior life cycle cost advantage versus tile.
  • Meets the requirements of USDA for use in food plants.
 
Product Data Sheet Show all documents

Usage

  • Sika® Ucrete® RG29 NA is primarily used for vertical application of cove/cant on concrete substrates
  • Used in food processing plants, wet and dry process areas, freezers and coolers, dairies, breweries, wineries, distilleries, laboratories, chemical process plants, pulp and paper plants, warehouses and storage areas
 

Advantages

  • Can be applied on green concrete, typically 7-10 days. Full 28 days cure time is not required.
  • Can be applied over partially cured concrete substrates (> 4% mass (pbw –part by weight) as measured with Tramex® CME/CMExpert type concrete moisture meter surface moisture).
  • Can be applied to concrete substrates where <100 % relative humidity is measured as per ASTM F2170.
  • Resists a very wide range of organic and inorganic acids, alkalis, amines, salts and solvents. Consult Sika Technical Service for full details.
  • Similar coefficient of thermal expansion of concrete allowing movement with the substrate through normal thermal cycling. It will perform and retain its physical characteristics through a wide temperature range from -40 °F (-40 °C) up to 248 °F (120 °C).
  • Steam cleanable at 1/8'' to 1/4'' (125 to 250 mils) thickness.
  • Non-tainting, odorless.
  • Behaves plastically under impact / deforms but will not crack or debond.
  • High abrasion qualities result from its aggregate structure.
  • Maintain and extend existing expansion joints up through the Sika® Ucrete® Flooring System.
  • Minimal maintenance costs, superior life cycle cost advantage versus tile.
  • Meets the requirements of USDA for use in food plants.
 

Packaging

Part 1:

0.50 US gal 

Part 2:

0.35 US gal

Part 3:

47.92 lbs in a bag (powder)

Part 1+2+3:55.82 lbs

Color

RAL 7042 Traffic Grey

Product Details

Product Information

Shelf Life

Parts 1, 2, 3:

1 year in original unopened packaging

Storage Conditions

Store dry between 50° - 77° F (10° - 25° C). Protect from freezing.

Density

17.53 lb/US gal. (1.40 kg/L)

ASTM C905

at 73 °F (23 °C) and 50% R.H
Technical Information

Shore D Hardness

80 - 85

ASTM D2240

at 73 °F (23 °C) and 50% R.H

Abrasion Resistance

CS-17/1,000 cycles/1,000 g - 0.09 g loss

ASTM D4060

at 73 °F (23 °C) and 50% R.H

H-22/1,000 cycles/1,000 g - 4.01 g loss

ASTM D4060

at 73 °F (23 °C) and 50% R.H

Impact Strength

6.70 ft-lb (9.08 joules)

at 1/8" (3 mm) of thickness

ASTM D2794

at 73 °F (23 °C) and 50% R.H

Compressive Strength

2,901 psi (20 MPa) 24 hours

ASTM C579

at 73 °F (23 °C) and 50% R.H

Flexural Strength

1175 psi (8.1 MPa)

ASTM C580

at 73 °F (23 °C) and 50% R.H

>254 psi (1.75 MPa) 

substrate failure

Pull-off Strength

ASTM D4541

at 73 °F (23 °C) and 50% R.H

Tensile Strength

363 psi (2.5 MPa)

ASTM C307

at 73 °F (23 °C) and 50% R.H

Thermal Compatibility

Pass

ASTM C884

at 73 °F (23 °C) and 50% R.H

Coefficient of Thermal Expansion

0.72 x 105 in/in/°F (1.3 x 105 mm/mm/°C)

ASTM D696

at 73 °F (23 °C) and 50% R.H

Chemical Resistance

Please consult Sikafloor Technical Services

Microbiological Resistance

Resistance to Fungi Growth rated 0

(no growth)

ASTM G21

at 73 °F (23 °C) and 50% R.H

Resistance to Mold Growth rated 10

(highest resistance)

ASTM D3273

at 73 °F (23 °C) and 50% R.H

Indentation

~ 0%

MIL-PRF-24613

at 73 °F (23 °C) and 50% R.H

Water Absorption

0.16%

ASTM C413

at 73 °F (23 °C) and 50% R.H

Softening point

266 °F (130 °C)

 

Application

Application Information

Ambient Air Temperature

Minimum/Maximum: 40 ° F/85 ° F (4 °C/30 °C)

Substrate Temperature

Minimum/Maximum: 40 °F/85 °F (4 °C/30 °C)

Pot Life

Material Temperature

Time

+ 50 °F (10 °C)

~ 30 - 35 minutes

+ 68 °F (20 °C)

~ 20 - 25 minutes

+ 86 °F (30 °C)~ 10 - 15 minutes

Cure Time

Ambient & Substrate Temperature

Full Cure

+ 50 °F (10 °C)

~ 7 days

+ 68 °F (20 °C)

~ 5 days

+ 86 °F (30 °C)~ 3 days

Waiting / Recoat Times

Before applying sealer coat on Sika® Ucrete® RG29 NA allow

Substrate Temperature

Minimum

Maximum

+ 50 °F (10 °C)

24 hours

5 days

+ 68 °F (20 °C)

12 hours

48 hours

+ 86 °F (30 °C)

6 hours

36 hours
Consumption

Coverage

At 1/8 inch thick and 1 inch radius: 

Cove height: 6 in = 25 linear feet

Cove height: 4 in = 30 linear feet

(The above figures do not allow for surface porosity, profile or waste)
Application steps

SUBSTRATE PREPARATION

Concrete surfaces must be clean and sound. Remove all dust, dirt, existing paint films, efflorescence, exudates, laitance, forms oils, hydraulic or fuel oils, brake fluid, grease, fungus, mildew, biological residues or any other contaminants which may prohibit good bond. Prepare the surface by any appropriate mechanical means, in order to achieve a profile equivalent to ICRI-CSP 3-6. The compressive strength of the concrete substrate should be at least 3,625 psi (25 MPa) and a minimum of 218 psi (1.5 MPa) in tension at the time of application.

 

Repairs to cementitious substrates, filling of blowholes, leveling of irregularities, etc. should be carried out using an appropriate Sika profiling mortar. Contact Sika Technical Service for a recommendation.

 

Edge Terminations

All free edges of Sika® Ucrete® floor, whether at the perimeter, along gutters or at drains require extra anchorage to distribute mechanical and thermal stresses. This is best achieved by forming or cutting grooves in the concrete. Grooves should have a depth and width of 2 times the thickness of the Sika® Ucrete® floor. Contact Sikafloor Technical Service for more information and construction details.

 

If necessary, protect all free edges with mechanically attached metal strips. Do not featheredge, always turn into an anchor groove.

 

Expansion Joints

Expansion joints should be provided in the substrates at the intersection of dissimilar materials. Isolate areas subject to thermal stresses, vibration movements or around load-bearing columns and at vessel sealing rings. Refer to details at https://usa.sika.com/flooring.

 

Priming

Priming for concrete substrate is required. Prime with either Sikafloor®-160, Sikafloor®-161,Sikafloor®-165 FS or Sikafloor®-1620 at a rate of 160 – 200 ft2/gal., using a brush or roller to provide uniform coverage. Primer must be tacky during the application of Sika® Ucrete® RG29 NA mortar. Only mix and apply enough primer that can be overlaid before it cures (approximately 3 hours at 68 °F/20 °C). If the primer loses tackiness, remove any surface contaminates then recoat with additional primer coat.

 

Please refer to the individual most current and respective product data sheet for specific and detailed information.

 

MIXING

Mix Ratio: Parts 1 : 2 : 3

 

Note: Mix full units only

 

A “kol” type mixer, incorporating a motor spun mixing pail and a shear angle mixing blade, or a forced action mixer is recommended. Mixing will be affected by temperature; condition materials for use to 65 - 75 °F (18 - 24 °C). Premix parts 1 and 2 separately, make sure all pigment is evenly distributed. Pour part 1 and 2 into a clean mixing bucket/container large enough to accommodate the mix size quantity and mix for 30 seconds. Add part 3 (powder) pouring slowly over a period of 20 seconds. Note: Do not dump powder into resin! Allow part 3 to blend for an additional 2 1/2 minutes after all powder is emptied into the resin to ensure complete mixing and that all powders are evenly distributed. During the mixing operations, scrape down the sides and bottom of the container with a flat or straight edge trowel at least once to ensure complete mixing (Parts 1+2+3).

APPLICATION

Mix and apply Sika® Ucrete® RG29 NA using steel trowels to spread and compact the mortar on vertical surfaces. Minimum of a 3/4'' radius cove trowel recommended. A light brushing while the mortar is still workable will close any surface voids. Low level halogen light will assist in identifying trowel marks and waves while finishing the cove base.

  • Do not apply to polymer modified cement mortars (PCC) that may expand when sealed with an impervious resin.
  • Do not apply to water-soaked, glistening-wet concrete substrates. (i.e standing water)
  • Do not use on exterior, on-grade substrates; for interior use only.
  • Do not apply to surfaces where moisture vapor can condense and freeze.
  • Do not apply to un-reinforced sand cement screeds, asphaltic or bitumen substrate, glazed tile or non-porous brick, tile and magnesite, copper, aluminum, soft wood, or urethane composition, elastomeric membranes, fiber reinforced polyester (FRP) composites.
  • Do not apply while ambient and substrate temperatures are rising, as pinholes may occur.
  • Freshly applied material should be protected from dampness, condensation and water for at least 24 hrs.
  • Protect substrate during application from condensation from pipes or any overhead leaks.
  • Do not featheredge.
  • Color uniformity cannot be completely guaranteed from batch to batch (numbered). Take care when using Sika® Ucrete® products to draw from inventory in batch number sequence, do not mix batch numbers in a single floor area.
  • Some colors may produce noticeable shade variations between Sika® Ucrete® systems (e.g. difference between floor and coving mortars). In order to achieve a uniform appearance, the use of top coats (e.g. Sika® Ucrete® TC31 NA) throughout entire area may be required.
  • Will discolor over time when exposed to sunlight (UV) and under certain artificial lighting conditions. Use of clear UV resistant top coat may not prevent discoloration of underlying coatings.
  • Do not apply Sika® Ucrete® RG29 NA to concrete substrate containing aggregates susceptible to ASR (Alkali Silica Reaction) due to risk of natural alkali redistribution below the Sika® Ucrete® RG29 NA product after application. If concrete substrate has or is suspected to have ASR (Alkali Silica Reaction) present, do not proceed. Consult with design professional prior to use.
  • Any aggregate used with Sika® Ucrete® systems must be non-reactive and oven-dried.
  • This product is not designed for negative side waterproofing.
  • For professional use only by experienced applicators.

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