The geotechnical needs of DOTs and other agencies responsible for roads and bridges are vast. Issues include: Culvert repair Soil stabilization Void filling Concrete slab lifting Sinkhole remediation Slope control Slough control in tunneling
Protecting concrete usually means shielding it from the elements of nature or from harsh manmade chemicals. But it’s not just concrete that needs such protection. Corrugated metal pipe, steel surfaces, material hoppers, rail cars and masonry all can come in contact with corrosive or abrasive materials or harsh conditions.
Prime Flex 985 LX20 is a polyurethane foam that fills voids behind and under structures. This versatile product is a two-component, low exotherm polyurethane foam used to fill voids, stabilize soil and underseal concrete slabs. Its low viscosity (270-280 cps) allows for moderate permeation effects as well. This formulation has double the expansion capacity of Prime Flex 985 LX10. It has been independently tested and certified to meet NSF/ANSI Standard 61.5 for contact with potable water.
• AK Steel – Middletown, OH
• Duke Energy – New Richmond, OH
When cured 985 LX20 has a compressive strength of (ASTM D-1621) 4,900 p.s.f., an expansion rate of 20 times, a density of 2.5 pounds per cubic foot, and no shrinkage (ASTM D-1042 / D756).