Metco WR
Metco WR is a liquid admixture for concrete and mortar that allows water reduction without sacrificing slump or workability. Through a chemical process, it internally lubricates the cement matrix to increase the efficiency of any cementitious system. This allows the production of concrete and mortars with higher strengths, better freeze/thaw resistance, and lower permeability. It can also be used to increase the workability of concrete and mortar while maintaining water content.
Product families
- Concrete Admixtures
Other characteristics
- Brand
- Metco
- Features
- Freeze/Thaw Stability, Low Permeability
- Product Type
- Mortar
- Application Area
- Masonry
- Markets
- Building & Construction
- Storage
- Keep Metco WR from freezing in storage.
- PACKAGING
Metco WR is available in 1-gal. (3.8 liter) jugs (4 jugs per case), 5-gal. (18.9 liter) pails, and 55-gal. (208 liter) drums. Metco WR is also available in bulk.
- Composition
Metco WR is a blend of chemicals in a water-based system that are non-corrosive to concrete and mortar.
- Applications
Building & Construction — Other Building & Construction Applications
- Technology
- Ready-to-Use Products
- Benefits and Features
Easy to use by direct addition to concrete or mortar.; Reduces required water thereby enhancing hardened properties.; Normal set times virtually unaffected with normal dosage rates.; Contains no added calcium chloride or other corrosive agents.; Takes hard to work concrete to easily placed high slumps.; Can be used with air entrained systems.; Excellent for use as a pumping aid.
- Use Direction
Preparation: Normally, standard concrete or mortar mixes should be mixed with an approximately 5% water reduction as a starting point. Add Metco WR and mix for 3 minutes and check for desired slump or flow. Add additional water to make final adjustments and mix for 2 additional minutes. Keep track of water and Metco WR dosage for additional batches. On applications where additional slump or flow is needed, add Metco WR to the standard mix and blend for 3 to 5 minutes. Adjust Metco WR to achieve desired workability. Concrete utilizing Metco WR will flow farther and expect greater form pressures than with standard concrete. Forms should be built accordingly.
- Estimating and Coverage
To properly dose with Metco WR, the cement factor or content of the concrete or mortar must be known. Most applications will use 2 oz. (0.06 liter) to 5 oz. (0.15 liter) of Metco WR per 100-lbs. (45 kg) of cement.
- Applicable Standards
ASTM C 494, Standard Specification for Chemical Admixtures for Concrete, Types D.
- Compressive Strength
- Metco WR vs. control at a 4 in. (102 mm) slump.
- 1,350 psi (9 MPa)
- 2,170 psi (15 MPa)
- 3,430 psi (24 MPa)
- 4,480 psi (31 MPa)
- Typical Applications
- Ready-mix concrete
- Mass concrete
- Job mixed concrete
- Footers
- Grouts
- Flatwork
- Heavily reinforced structural concrete
- High strength concrete.
- Ready to Use Product Features
- Freeze/Thaw Stability
- Low Permeability
- Compatible Substrates and Surfaces
- Concrete
