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High range water reducing plasticizer with added wetting agents for improved surface detail of dry cast concrete production.


Specco W-35 plasticizing admixture is formulated to provide improved placement and lubricity to semi-dry concrete products such as concrete block or brick, dry cast pipe or landscaping paving stones. W- 35 disperses the mix to provide added workability while lowering the overall water to cement ratio. This allows easier hydration of the cement particles and results in improved green strengths and higher ultimate compressive strengths. Improved compaction and swipe are obtained with less overall surface voids or culls.


  • Improved mix lubricity reduces overall compaction resistance and decreases mold fill cycle times.
  • Reduced vibration times provide increased production levels and reduce overall cost per unit.
  • Improves surface appearance, texture, edges and corners, as well as color consistency.
  • Increased density and strength gains reduce splitting, stacking and shipping times and help prevent damage or production breakage.

COMPOSITION: Low viscosity modified sulfonate based solution. W-35 does not contain any calcium chloride or intentionally added chlorides that would initiate or promote corrosion of reinforcement steel, or contribute to efflorescence.

TECHNICAL DATA: By adding fluidity, Specco W-35 plasticizer allows improved cement hydration and dispersion, which improves the workability of the mix. The duration of workability depends on temperature, brand and type of cement, aggregate type and gradation, method of mixing and method of transport. When added at normal dosages, W-35 will not significantly affect the concrete’s heat of hydration. Specco W-35 is compatible with most mineral and chemical components common to Portland cement, calcium alumna cement and calcium sulfate (gypsum).

DOSAGE: Specco W-35 is normally dosed as supplied at a rate of 2 to 6 fluid ounces per 100 pounds of cement (130-390 ml/100 kg). Other dosages may be required depending on specific conditions. For best results, add W-35 after pre-wetting the mix aggregates and cement with part of the required hydration water. Do not add W-35 to dry cement mix if possible. Mix components for at least two minutes to provide optimum lubricity to mix.

AVAILABLE IN: 5 Gallon (18.9 L) pails, 55 Gallon (208 L) drums, 265 Gallon (1000 L) containers.

Available info for -35 PLASTICIZER:
Tech Data MSDS

Tech Data



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