Super Slump Buster

  • Overview
  • Packaging
  • FAQs
  • Advantages
  • Resources

Super Slump Buster is a dry powdered slump reducing admixture packaged in a patented, ready-to-use, water-soluble bag. Super Slump Buster is uniquely formulated to provide the ready mix producer with an economical solution to a concrete mix with too high a slump for proper placement. This viscosity modifying admixture thickens the water in concrete, thus increasing the support capabilities of the aggregates. It is recommended for slip-forming or concrete placed on slopes, is environmentally safe, and is compatible with all conventional materials. It contains no cementitious materials, soaps, or air-entraining agents, and does not affect air content, strengths, or water to cement ratio. Super Slump Buster is a viscosity modifier.

971808 oz. (227 g.) water-soluble bag6042
What is Super Slump Buster?
It is a water thickener.
How does Super Slump Buster work?
As the water thickens, it is able to maintain particles in suspension better than just plain water. So the thickened water holds the cement, the cement paste holds the sand, and the sand holds the aggregates, thus reducing slump.
Does Super Slump Buster work the same in all mixes?
No. In mixes with low cement content, Super Slump Buster is less effective. Also gapgraded mixes slump differently than properly graded mixes. Reverse mixes (i.e. low aggregate, high sand content) also slump differently.
Does Super Slump Buster increase the strength of concrete?
No. Whatever amount of water was used in the mix does not change, so strength is not increased.
What standards does Super Slump Buster meet?
Super Slump Buster falls in the category of Viscosity Modifying Admixtures (VMA). At present there are no ASTM standards for this group of materials.
Does Super Slump Buster affect set time?
Does it affect air entrainment?
What are the best applications for Super Slump Buster?
Super Slump Buster is most commonly used in slipforming or curb mixes. Normally these mixes require a low slump. Low slump concrete is difficult to batch because just a small amount of excess water can increase the slump. So adding Super Slump Buster can easily correct the slump.
What is the mixing procedure of Super Slump Buster when adding to the concrete?
e recommend 5 minutes of mixing at high speed to insure good dispersion throughout the concrete and then an additional 5 minutes at slow speed to allow for Super Slump Buster to develop its full thickening properties.
How long has Super Slump Buster been in the market?
Super Slump Buster has been sold since 1994.
Can I use Super Slump Buster to pour concrete on an incline?
Can I pour concrete for flatwork first and then add Super Slump Buster to the same load to pour a curb of slip forming?
What is the maximum reduction in slump I can achieve using Super Slump Buster?
3 to 4 inches.
  • Permits controlled slump reduction
  • Allows concrete placement on inclines
  • Excellent for forming curbs
  • Permits placing different flows from the same load
  • Minimizes segregation
  • Does not change water-cement ratio
  • Allows for maximum truck utilization
  • Faster discharge of concrete from trucks
  • Improves finishing characteristics
  • Easier placement of concrete in slip-form machines


Super Slump Buster is compatible with all air-entraining admixtures as well as other conventional admixtures. When used with other admixtures, each one must be dispensed separately into the mix.