Polyurethane Chemical Systems for Geotechnical Applications: Concrete Lifting, Void Fill, Undersealing, Poly Backfill & Cavity Fill

We use the TerraThane™ product line from NCFI Polyurethanes. TerraThane™ is specifically designed for Geotechnical applications, such as concrete lifting and leveling, poly back-fill, rock grout, void fill, undersealing, polyurethane grout, crack & joint sealants, and protective coatings. Complete technical data on these products can be found below.

Concrete Lifting, Void Fill, And Undersealing 24-003 is a 3.0 to 4.0 lbs per ft³ density, plural component, polyurethane foam designed for concrete lifting and void filling applications. This system is hydrophobic, making it ideal for applications where water may be present under or around a concrete slab. This system offers excellent compressive and tensile strength values (based on ASTM test methods) and is highly resistant to chemicals and solvents.

24-486 is a 4.0 lbs per ft³ density, plural component, polyurethane foam ideally suited for concrete lifting and void fill applications. This system has excellent compressive and tensile strengths (based on ASTM test methods) and is highly resistant to chemicals and solvents.

Product Code	Compressive Strength (Free Rise) ASTM 1621	Tensile Strength (Free Rise) ASTM 1623	Compressive Strength (Confined) ASTM 1621	Tensile Strength (Confined) ASTM 1623
24-003	55 psi	70 psi	90 psi	110 psi
24-486	60 psi	82 psi	69 psi	146 psi
24-486 SLOW	60 psi	82 psi	69 psi	146 psi
24-010	35 psi	45 psi	75 psi	75 psi
24-031	120 psi	130 psi	240 psi	220 psi

Poly Backfill and Cavity Fill

23-004 is a 2.65 lb per ft³ density, closed-cell, plural component, polyurethane foam designed for masonry cavity fill and other void filling applications. It is formulated for use where building codes specify 25 flame spread and less than 450 smoke density based on the ASTM E-84 test procedure.

Complete technical data on these products can be found here.