Sikagard®-200 HD WB
(former MasterKure® CC 200WB)
HARDENING, SEALING AND DUSTPROOFING COMPOUND
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Sikagard®-200 HD WB is a water-soluble, inorganic, silicate-based curing, hardening, sealing and dustproofing compound. Use it for freshly placed and finished concrete and in the renovation of aged concrete.
- Protects floors during construction
- Easy to apply and quick drying for quick turnaround
- Water-based; no VOCs and easy to clean up
- Aids curing of concrete; minimizes shrinkage cracking and improves strength development
- Hardens concrete to withstand moderately heavy-duty traffic
- Improved abrasion resistance to extend wearability
Usage
- Interior and exterior
- Above or below grade
- Concrete floors and pavements
- Curing of fresh concrete
- Renovation of aged concrete
Advantages
- Protects floors during construction
- Easy to apply and quick drying for quick turnaround
- Water-based; no VOCs and easy to clean up
- Aids curing of concrete; minimizes shrinkage cracking and improves strength development
- Hardens concrete to withstand moderately heavy-duty traffic
- Improved abrasion resistance to extend wearability
Packaging
5-gallon (18.9 L) pails
55-gallon (208 L) drums
Color
Clear
Product Details
APPROVALS / STANDARDS
USDA compliant for use in meat and poultry areas
Chemical Base
Sikagard®-200 HD WB is an alkalisilicate hardener.
Shelf Life
15 months when properly stored.
Storage Conditions
Store in unopened containers in a cool, dry area between 35°F and 85°F (4°C and 29°C). Keep from freezing.
Abrasion Resistance
Untreated sample | 8 g loss 1,000 g load, 1,000 revolutions(100%) |
Sikagard®-200 HD WB treated* | 6 g loss 1,000 g load, 1,000 revolutions (78%) |
20% increase in abrasion resistance over untreated samples
*Application to fresh mortar. Abrasion resistance measured at 7 days, 70° F (23° C) and 50% relative humidity.
Water retention
Untreated sample | 90 g loss |
Sikagard®-200 HD WB treated* | 63 g loss |
30% improvement in moisture retention
*Application to fresh mortar. Abrasion resistance measured at 7 days, 70° F (23° C) and 50% relative humidity.
Chemical Resistance
Alkali-silicate hardeners can be used to increase resistance to chemicals including (but not limited to) the following:
Acetic acid, <10% | Cresol | Paraffin |
Aluminum sulfate | Cumol | Peanut oil |
Ammonium carbonate | Ethyl alcohol | Phenanthrene |
Ammonium chloride | Ferric chloride | Phenol, 25% |
Ammonium hydroxide | Ferric nitrate | Phosphoric acid, 80% |
Ammonium nitrate | Ferric sulfate | Poppy seed oil |
Ammonium sulfate | Fish oil | Potassium aluminum sulfate |
Anthracene | Formaldehyde, 37% | Potassium carbonate |
Arsenious acid | Formic acid, 90% | Potassium chloride |
Barium hydroxide | Fruit juices | Potassium dichromate |
Beef fat | Glucose | Potassium hydroxide, 15% |
Benzene | Glycerine | Potassium nitrate |
Borax | Honey | Potassium persulfate |
Boric acid | Humic acid | Potassium sulfate |
Buttermilk | Hydrochloric acid, 10% | Rapeseed oil |
Calcium chloride | Hydrogen sulfide | Rosin |
Calcium hydroxide | Iodine | Sea water |
Calcium nitrate | Lactic acid, 25% | Sodium bicarbonate |
Calcium sulfate | Lead nitrate | Sodium bromide |
Carbazole | Lead-refining solutions, 10% | Sodium carbonate |
Carbonic acid | Lignite oils | Sodium chloride |
Castor oil | Linseed oil | Sodium dichromate |
China wood oil | Machine oil | Sodium hydroxide, 10% |
Chromic acid, 10% | Magnesium chloride | Sodium nitrate |
Chrysen | Magnesium nitrate | Sodium nitrite |
Cider | Manure | Sodium sulfate |
Coal | Methyl alcohol | Sodium sulfite |
Coal-tar oils | Mine water, waste | Sodium thiosulfate |
Cobalt sulfate | Mineral spirits | Soybean oil |
Coconut oil | Molasses | Sugar |
Copper chloride | Mustard oil | Sulfur dioxide |
Copper sulfate | Nickel sulfate | Toluene |
Corn syrup | Nitric acid, 40% | Zinc chloride |
Cottonseed oil | Oleic acid, 100% | Zinc nitrate |
Creosote | Olive oil | Zinc sulfate |
Application
Drying Time
- Sikagard®-200 HD WB penetrates in approximately 30-60 minutes after application, depending on temperature, humidity, and job conditions. Each application must penetrate thoroughly before proceeding with the next.
- A floor treated with Sikagard®-200 HD WB must completely dry before accepting any traffic. Allow 24 hours before subjecting to heavy traffic.
Coverage
150–200 ft2 /gal (3.68 – 4.9 m2 /L)
Coverage may vary with application method, surface conditions, and porosity
APPLICATION INSTRUCTIONS
For Best Performance
- On exterior applications, rapid drying conditions may greatly reduce the effectiveness of Sikagard®-200 HD WB as a curing aid. It is the responsibility of the user to adjust the curing rate to properly regulate the hydration of the concrete.
- If Sikagard®-200 HD WB freezes, warm and restir to uniformity. If separation is persistent, discard product.
- Install joint sealants before application of Sikagard®-200 HD WB; if not possible, test first for adhesion.
- For subsequent coating applications, perform proper surface preparation and consult the coatings manufacturer for more instructions.
- Spray application will yield best results.
- Dry buffing 24 hours after application will improve sheen of finished floor.
- Application method and concrete porosity will affect final appearance of Sikagard®-200 HD WB. White residue signifies too strong a mix or the surface reaching maximum hardness. Applications should be stopped and the surface flushed with clean hot water, scrubbed with a stiff-bristled broom and allowed to dry. If any applications remain, dilution of the product may be required to prevent whitening.
- Applications to concrete containing pozzolanic additives will require additional Sikagard®-200 HD WB.
- Do not allow Sikagard®-200 HD WB to come in contact with any glass, fabric, metal, or painted surfaces. Immediately wipe contaminated surfaces with a clean water-saturated cloth, then wipe dry with a second clean cloth.
- Allow at least 7 days after application before using adhesives over Sikagard®-200 HD WB.
- One application of Sikagard®-200 HD WB is normally sufficient. Repeat applications will ensure complete densification of concrete surface.
- For professional use only; not for sale to or use by the general public.
- Make certain the most current versions of product data sheet and SDS are being used; visit usa.sika.com to verify the most current versions.
- Proper application is the responsibility of the user. Field visits by Sika personnel are for the purpose of making technical recommendations only and not for supervising or providing quality control on the job site.
SUBSTRATE PREPARATION
New Concrete
- Freshly finished concrete surfaces require no surface preparation if Sikagard®-200 HD WB is applied immediately after the final finishing operation in place of a resin or acrylic curing compound.
- On areas where forms have been recently removed, all form oil or breaking compound residue must be removed prior to application.
Existing Concrete (Cured 28 Days or Longer)
- Remove all dust and dirt, and ensure the surface is completely dry.
- The surface must be free from all contaminants to allow penetration of Sikagard®-200 HD WB into the pores of the concrete.
- If acid is used to remove surface coatings, the acid must be neutralized and the surface flushed with water and allowed to dry completely before application of Sikagard®-200 HD WB.
- Apply Sikagard®-200 HD WB to a test area to verify effectiveness and final surface finish
APPLICATION
Sikagard®-200 HD WB must fully saturate the concrete for maximum effect. Apply sufficient product to saturate the concrete without puddling.
New Concrete
- After final finishing, as soon as all surface water has evaporated and the concrete can bear foot traffic, apply Sikagard®-200 HD WB with a low-pressure sprayer. Keep the entire surface wet with Sikagard®-200 HD WB for a full 30 minutes by spraying or by brooming excess material from low spots to saturate dry spots.
- As Sikagard®-200 HD WB begins to penetrate into the surface, lightly sprinkle the surface with water to aid penetration.
- When the surface begins to dry a second time, flush with water and use a squeegee or broom to remove excess material or impurities that may have been brought to the surface.
- To improve sheen, dry buff with a non-abrasive pad the following day.
Existing Concrete (Cured 28 Days or Longer)
- Saturate the surface with undiluted Sikagard®-200 HD WB. Keep the entire surface wet with Sikagard®-200 HD WB for a full 30 minutes by spraying or by brooming excess material from low spots to saturate dry spots.
- After 30-40 minutes, if most of the Sikagard®-200 HD WB has been absorbed into the surface, broom or squeegee any excess material from the low spots so it may be absorbed into the surface or completely removed from it. Flush floor clean with water.
- Alternatively, use a floor buffing machine with a non-abrasive pad to help work Sikagard®-200 HD WB into fully cured concrete during application.
CLEANING OF TOOLS
Clean brushes, tools and equipment with clean water immediately after use. Thoroughly flush sprayers. Dispose of unused material according to local regulations.