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: Creating an epoxy mortar by blending Prime Blend sand, a special blend of oven-dried silica sand, with epoxy resin. Use the mortar for spall repair, joint repair and concrete patching.
Problem: Forklift traffic and other wear and tear can damage concrete floors. This results in lower productivity, higher equipment repairs, potential product damage and employee injuries.
Solution: You can repair spalls, broken joints and other defects cost-effectively by making a mortar with epoxy resin and specially blended oven-dried sand. This method is great also for repairing precast and cast-in-place concrete damaged by weather, abuse, or transport and handling of precast elements.
Procedure: Add Prime Blend sand to mixed epoxy at a 1:1 to 5:1 ratio depending on the epoxy used. Mix using a low speed drill with a mixing attachment. Sand to resin mix ratios (by volume) are recommended as follows. Prime Blend sand is about 13 lbs. per volumetric gallon, so a 50-lb. bag of Prime Blend sand is approximately 3.8 gallons.
|Spall repair: for high compressive strengths||Prime Bond 3000 (standard, fast)||4:1|
|Spall repair: for slightly flexible repair||Prime Bond 3100||5:1|
|Spall repair: for large or deep repair areas; overlay of horizontal surfaces (low exotherm)||Prime Bond 3900 LPL||3:1 to 5:1*|
|Spall repair: for chemical resistant patch||Prime Coat 4300 Novolac||3:1|
|Interior joint sealing: for wide joints||Joint Shield 5000||3:1|
|Spall repair: for vertical patching||Prime Gel 2000, Prime Gel 2100||1:1|
* Adjust this ratio to provide the desired wetness and viscosity of the resulting mortar.
For products not listed, contact technical service for the recommended mix ratio.
Drill with mixing head
Bucket or other container for mixing