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
A property owner is plagued by a failing seawall. Soil washes away with every wave or tidal cycle through gaps in or under the wall. Maybe the wall joints are failing. Perhaps the footer no longer meets a solid foundation.
The symptoms are clear
The ground is caving in behind the wall. Voids are visible. Sinkholes are forming. Nearby walkway, sidewalk, patio or pool deck slabs have settled, resulting in trip and fall hazards. Unseen consequences can include compromised foundations of adjacent structures.
Cracks or failing joints in a seawall can cause erosion behind the wall, compromising the integrity of the structure
These symptoms are caused by erosion of the ground behind the wall. Typically, this is caused by leaks in the wall, improper drainage of land-side runoff, or ground behind the wall that was not sufficiently compacted during construction. The latter can happen when the original contractor worries about putting too much force against the wall and consequently doesn’t tamp the earth hard enough. Over time that ground will settle or will get saturated and mushy. Either will result in voids and erosion, undermining the integrity and effectiveness of the wall.
Seawall Repair Options
You could fill voids with dirt and aggregate or a cementitious fill. But this won’t remove the reason there is erosion or settlement in the first place.
You could replace some or all of the wall. That is a major construction project that is highly disruptive to the property owner and possibly to the environment. An environmentally sensitive area could mean an extensive (and expensive) permitting process, delaying remedy by weeks or months. Depending on the location, you could be looking at needing to use a barge or crane to do the construction.
There are absolutely times when replacement is the best or only option. That is often not the case though.
What if you could:
And what if you could do all of that with material so eco-friendly that it is certified for contact with drinking water?
Yes, you can
You can do all those things with polyurethane injection resins from Prime Resins. For 35 years, our products have been used to stabilize soil, seal leaks, and repair concrete—including more than 200 seawalls and bulkheads.
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Resources for seawall repair: