Crack Injection
Crack injection uses either chemical grouts or epoxies to stop water intrusion or address structural concerns. CJGeo specializes in crack injection using polyurethane, chemical and acrylic grouts to stop water infiltration. We also do some epoxy grouting to address structural cracks, but that’s not our specialty.
Crack injection uses either chemical grouts or epoxies to stop water intrusion or address structural concerns. CJGeo specializes in crack injection using polyurethane, chemical and acrylic grouts to stop water infiltration. We also do some epoxy grouting to address structural cracks, but that’s not our specialty.
Materials Used
CJGrout Polyurethane Grouts
We use CJGrout, our own line of dual-component polyurethane grouts. We have a wide range of products that are good for different things so we can always find the right one for the job. A few of the common ones used for Crack Injection are...
22SHV
Polyurethane can be used to seal under concrete and stop water from coming through. Learn More>
20SDB
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Been There Grouted That
National Mall Sinkholes
Panel 19 of the National Mall in Washington, DC, is a high-traffic, 16,000-square-foot lawn area situated directly above a WMATA metro tunnel. For over a decade, this specific section of the Mall was plagued by chronic sinkhole formation, creating significant safety hazards and maintenance challenges. Read More >
National Mall Sinkholes
Panel 19 of the National Mall in Washington, DC, is a high-traffic, 16,000-square-foot lawn area situated directly above a WMATA metro tunnel. For over a decade, this specific section of the Mall was plagued by chronic sinkhole formation, creating significant safety hazards and maintenance challenges. Read More >
National Mall Sinkholes
Panel 19 of the National Mall in Washington, DC, is a high-traffic, 16,000-square-foot lawn area situated directly above a WMATA metro tunnel. For over a decade, this specific section of the Mall was plagued by chronic sinkhole formation, creating significant safety hazards and maintenance challenges. Read More >
Additional Information Section (if needed)
Polyurethane grouting excels compared to cement-based grouting primarily due to cleanliness, speed and control. These combine to reduce overall costs compared to cement-based grouting. Polyurethane grouting can be used in place of cement-based grouts. This includes for processes such as compaction grouting, slabjacking, void filling and leak sealing. Polyurethane grouting is…
Cleaner
Polyurethane grouting is the cleanest concrete lifting and stabilization process. The injection equipment is mechanically connected to the slab or structure. Mechanical seals engage when not injecting material, no loose material is introduced to the repair area. Extruded material is easy to clean up because it cures very quickly.
Less Disruptive
Polyurethane grouting is the quietest and fastest process for stabilizing and raising settled concrete slabs. Because of the small hole size, drilling is fast and quiet. There is virtually no noise associated with the injection process itself. The equipment for polyurethane grouting is self-contained in a box truck. The trucks can park up to 400 feet away from the injection point.
Immediate Traffic
Foot traffic during work is functionally OK, and immediate resumption of vehicular traffic after work is completed can be expected. Polyurethane grouting is not affected by foot traffic during the injection process. Vehicular traffic may resume immediately after work finishes. This includes heavy loading such as trucks and industrial equipment like fork lifts, and even trains.
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