Developed by Sandia National Laboratories, our pozzolanic cementitious grouts are composed of a finely ground mixture of Portland cement, pumice, and super-plasticizer. With an average particle size of 3-4 microns for the ultrafine and 6-8 microns for the microfine, our grouts will penetrate and seal rock fractures and stabilize soils previously impermeable to standard cementitious grouts.
A Superior Grout:
Sourced, refined, and produced in the United States; distributed and supported by recognized American grouting expert Avanti International, U.S. Grout products are the obvious choice for those critical grouting applications where only a superior, high-performance grout will do.
- U.S. Grout products are ready to mix and pump.
- Competitively priced.
- Stable North American supply.
- Stringent quality control and modern plant facilities ensure uniformity.
- Expert support with an international distribution network.
- Smaller particle size will penetrate smaller fractures and finer grained soils.
- Low internal cohesion means greater penetration and lower drilling costs.
- Composed of non-hazardous materials.
GROUT CHARACTERISTICS—
Our Pozzolanic Grouts are Engineered for:
- Possible to achive very low water to cement ratio.
- Little or no bleed (at recommended water-to-grout ratios).
- Very stable (excellent longevity).
- Enhanced strength and decreased permeability.
- Two hours of injectability (or more if required).
- Volume stability, less than 0.1% linear shrinkage.
- Low superplasticizer content.
- Enhanced strength and decreased permeability.
- Water soluble lime and alkalinity are greatly reduced.
- Extremely low hydraulic conductivity (often referred to a permeability).
- Improved resistance to chemical attack due to extremely low hydraulic conductivity.
- The low heat of hydration results in high resistance to thermal contraction cracking.
Permeation Grouting (injecting the grout with pressure):
An extensive large-scale permeation test, completed in January, 2000, proved that U.S. Ultrafine Grout can pass through, and completely grout, a silty sand with a hydraulic conductivity as low as 5 x 10 - 2 centimeters/ second (the equivalent of a fine-grained sand with a silt content of 5%). The hydraulic conductivity of the grouted mass was reduced to 1 x 10 - 7 centimeters/second.
Particle Size Information
Particle size determines a grout's ability to penetrate extremely small openings, not viscosity. 90% of the particles in Ultrafine grout are smaller than 8 microns and average 3-4 microns.* The average for the Microfine Grout particles is between 6-8 microns.
Heavy Metals
As in all Portland Cements, US Ultrafine Grouts have a tendency to absorb and immobilize heavy metals (such as plutonium, actinium, strontium, uranium, etc.) This is important if the task is immobilizing radioactive waste.
