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.
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
Scope of Work: Prime Resins’ oakum is a fibrous twisted jute rope. It is used in conjunction with Prime Flex resins to seal leaking joints, pipe penetrations and conduits. Prime Resins’ oakum is dry and unoiled to ensure maximum absorption of Prime Flex.
Problem: Wide gaps or high hydrostatic pressure can make it difficult to stop leaks.
Solution: Chemical grouts are used to seal active leaks in concrete or brick structures to help control groundwater infiltration. By slowing the leak with the activated oakum technique, you allow the chemical grout more time to react with water and seal the defect.
This method can also be used to form a primary seal at the surface of wide joints or pipe penetrations in order to fill the space within the joint or around the pipe with chemical grout. The primary activated oakum seal acts to contain the expanding chemical grout within the joint or pipe penetration and to promote a dense cell structure in the cured foam.
Make sure the oakum stays dry until used or its absorption of resin will be diminished. Do not place a box of it on a wet surface. Transfer it to pails or trash bins in preparation for use in a wet space.
Prime Oakum and Prime Flex Grout Volume Requirements for Pipe Joints Sized 1” – 1.5”
|Pipe I.D.||Oakum in feet||Prime Flex in gallons|
It requires approximately 22 gallons of Prime Flex 900 XLV or Prime Flex Hydro Gel SX to saturate one 50 lb. box of Prime Resins unoiled oakum.