© 2014 Foundation Supportworks
®
,
Inc.
All Rights Reserved
p 345
Chapter 5
PolyLEVEL
®
Polyurethane Foam and Resin
APPENDIX 5A
TECHNICAL INFORMATION
PolyLEVEL
®
250
Technical Information
Description
PolyLEVEL
®
250 is a two-component, water
blown, nominal 2.5 pcf density, polyurethane
foam system designed to fill voids and lift
concrete slabs.
Typical Resin Properties
PolyLEVEL
®
250 R PolyLEVEL
®
250 A
Viscosity
(1)
850 cps
200 cps
Unit Weight
9.4 lb/gal
10.25 lb/gal
Shelf Life
6 months
6 months
Mix Ratio
PolyLEVEL
®
250 R PolyLEVEL
®
250 A
By Weight
100 parts
109 parts
By Volume
100 parts
100 parts
Typical Reaction Properties
Cream Time
(1)
7.5 sec
Rise Time
(1)
25 sec
Density
(2)
2.5 pcf
Typical Compressive Strength
(2)
35 psi
Typical Physical Properties
(3)
Typical In-Place Density
(ASTM D1622)
4 pcf
Compressive Strength
(ASTM D1621)
70 psi
Closed Cell Content
>90%
Water Absorption
(ASTM D2842)
<0.02 lb/sq ft
Resistance to Solvents
Excellent
Resistance to Mold and Mildew
Excellent
Maximum Service Temp
200°F
(1)
At 77°F
(2)
FRC = Free Rise Condition
(3)
Average value from laboratory testing and should serve only as
a guideline.
Storage and Cleanup
Shelf life is 6 months, in original, unopened
factory containers, under normal storage
conditions of 55° to 85° F. Do not store in direct
sunlight. Keep drums tightly closed when not in
use. Cured product may be disposed of without
restriction. Excess liquid “A” and “R” material
should be mixed together and allowed to cure,
then disposed of in the normal manner.
Safe Handling of Liquid Components
Use caution in removing caps and bungs from the
container. Loosen caps and bungs first to let any
built up gas escape before completely removing.
Avoid prolonged breathing of vapors. In case of
chemical contact with eyes, flush with water for
at least 15 minutes and get medical attention.
For further information refer to “MDI-Based
Polyurethane Foam Systems: Guidelines for
Safe Handling and Disposal” publication AX-119
published by the Center for the Polyurethanes
Industry 1300 Wilson Blvd, Suite 800, Arlington,
VA 22209.
Caution
Polyurethane products manufactured or
produced from this liquid system may present a
serious fire hazard if improperly used or allowed
to remain exposed or unprotected. The character
and magnitude of any such hazard will depend
on a broad range of factors which are controlled
and influenced by the manufacturing and
production process, by the mode of application
or installation and by the function and usage
of the particular product.
Any flammability
rating or reference contained in this or other
PolyLEVEL
®
250 literature is not intended
to reflect hazards presented by this or any
other material under actual fire conditions.
These ratings are used solely to measure and
