486Star_Data_Sheet.pdf

Product Description

486STAR is a two component high density expanding thermo set polyurethane resin system formulated for the under sealing, void filling & lifting of settled pavement, the stabilizing & stiffening of weak soils, and for the encapsulation & sealing of buried infrastructure. 486STAR coupled with minimally invasive injection techniques achieves repairs without the necessity of excavation or demolition.

Unique Properties

486STAR is capable of expanding 25 times its original starting volume in unconfined conditions. Fully cured 486STAR material is inert and non-toxic. 486STAR polymers are formulated in various densities and expansive coefficients for specific project applications. The low viscosity & lubricity of 486STAR polymer allows for easy penetration into soils while compacting surrounding soils and displacing water without detrimental dilution or loss of dimensional stability to the resin system.

486STAR has a patented chemical composition developed by Bayer Material Science that allows for direct application into water or very damp regions while still maintaining good physical properties. The patented chemical nature of 486STAR goes beyond available hydrophobic technologies currently available. 486STAR will form proper polyurethane linkages even while being injected directly into water. This property makes it ideal for lifting and stabilizing in areas with elevated soil moisture. Because of the monolithic and hydrophobic nature of 486STAR the polyurethane grout will resist underground water erosion or weakening.

Processing Parameters

486STAR is a two component system that must be applied with a proportioning unit designed to allow 1 to 1, by volume, metering of materials. The proportioning equipment must be capable of maintaining recommended injection temperatures and pressures.

Applications Include

Slab Jacking Foundation Repair Soil Stabilization Void Filling Concrete Lifting Bridge Approaches Infrastructure Repair Increasing Load Bearing Capacity of Weak Soils

Liquid Components

“A” Component “B” Component

Viscosity 175 cps 225 cps Specific gravity 1.24 1.00 Bulk density 10.3 lbs/gal 8.3 lbs/gal

Storage and Handling

486STAR components have a shelf life of 1 year when stored at 60

– 80ºF out of direct sunlight and extreme humidity, >80% RH.

486STAR “A” component is water sensitive and caution must be taken to ensure “A” component is not exposed to moisture. If material remains in a receptacle be sure to tightly seal lid to minimize moisture exposure.

The “A” and “B” components should not be stored in temperatures less than 50ºF for prolonged periods. Some phase separation in the “B” component may be noticed at these temperatures. If there is phase separation the material must be warmed and thoroughly mixed prior to use. Consult Bayer for proper warming and mixing guidelines. If the “A” component is allowed to crystallize or separate from exposure to cold temperatures, it is not useable and must be replaced.

Safety Precautions

Appropriate literature has been assembled which provides information concerning the health and safety precautions that must be observed when handling 486STAR components. Before working with these products, you must read and become familiar with the available information on their hazards, proper use, and handling. Information is available in several forms, e.g., material safety data sheets and product labels. Contact Bayer’s Product Safety and Regulatory Affairs Department in Pittsburgh, Pa. at 1.800.221.3626.

486STAR

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Technical Data

Chemical Resistance

* DISCLAIMER: Physical properties generated under controlled laboratory conditions. Actual properties may vary under real world conditions. No warranty expressed or implied is given as individual results will vary.

486STAR

Po lyu re thane Po lyu re thane Foam Grou tFoam Grou t

Techn ica l Da ta Shee t : 04 /20 /2010Techn ica l Da ta Shee t : 04 /20 /2010

* DISCLAIMER: chemical resistance is for cured foam.