Seawall Repair on Lake Oconee and Robin Lake

GCS on Sep 20, 2019 10:28:26 AM

Seawall Repair on Lake Oconee and Robin Lake

Seawall Repair on Lake Oconee and Robin Lake

Lake Oconee and Robin Lake at Callaway Gardens are two of the most significant bodies of water in close proximity to the greater Atlanta area. Do you own or manage property on either of these lakes? If you have a seawall on your property, you may want to check for the following:

  • Settled soil near the wall (a sign of water leaking through the wall and eroding the soil on the land side).
  • Soil deposits near the seams on the water side of the wall (a sign of water leaks bringing soil through the seams into the lake).
  • Visible rust colored cracks or stains in the wall (a sign of water leaking through cracks in the wall and rusting the rebar inside).

These could all be indications that your seawall is leaking and in need of repair.  Polyurethane seawall repair is less expensive and more efficient than tearing out the wall and replacing it completely.

At GCS we use Alchemy-Spetec’s AP Fill 700 high-strength polyurethane foam on our seawall repair jobs.

Proven Strength

Impermeable to water once in place, this foam decreases the likelihood of future erosion versus refilling the void with soil or other material.

Originally developed over 30 years ago, and continuously improved since, this technology has one of the longest histories of success in the field among repair uses of polyurethane foams.

Environmentally Safe

AP Fill 700 has been approved for contact with drinking water (NSF 61-5) by Truesdail Laboratories. While no one will likely be drinking out of the lake water, this extra level of precaution means that the cured resin has no adverse effect on water quality.

Efficient Installation

Results are immediately clear due to the visible exiting of water when the foam is injected.  The foam rapidly sets in less than 10 minutes.  No heavy equipment is needed, as the foam is simply injected through pipes directly into voids and loose soil using a small single component pump.

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Topics: All Posts, Soil Stabilization, Seawall Repair

Repair Your Concrete to Prepare Your Home for Sale

GCS on Sep 5, 2019 10:00:00 AM

Repair Your Concrete to Prepare Your Home for Sale

Repair Your Concrete to Prepare Your Home for SaleProtecting Your Property Value

One effective way to increase the value of your home, and increase the speed at which it sells, is to make some simple soil and concrete repairs.  Sinking driveways, pool decks, garage floors, front steps and foundations can be an eye sore and a safety risk.  When preparing your home for sale, it's important to make sure all of these areas have been inspected and repaired if necessary.

Soil Inspection

Groud Consolidation Services uses a wireless ground penetrating radar system to create accurate images of the area beneath your concrete structures.  This process removes all uncertainty and take the guesswork out of the diagnostic process.  A crystal clear understanding of the problem provides the best foundation for accurate, durable and lasting repairs.

Concrete Leveling

Sunken structures create trip hazards, liability risks and are often a sign of further damage to come. But they can be leveled with high strength polyurethane resin. In optimal conditions, slabs and structures can often be lifted to within 1/8” of their original level. Polyurethane slab lifting is much more efficient and a lot less expensive than demolishing and replacing the slab or structure.

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Topics: Slab Lifting, All Posts, Soil Stabilization, Void Fill

How Constant Rainfall Undermines Concrete Structures

GCS on Aug 30, 2019 1:26:14 PM

How Constant Rainfall Undermines Concrete Structures

How Constant Rainfall Undermines Concrete StructuresRainwater & Erosion

Simply put, rainfall causes erosion. Erosion occurs when rainwater removes soil or rock from a certain location and transports it to another location. Erosion ultimately destabilizes soil and in extreme cases can lead to landslides and sinkholes. Rainwater erosion can also cause smaller scale issues such as sinking slabs, voids underneath your structure, or unstable soil that may at some point become a problem.

Repairing Eroded Soil

After investing money in the construction or purchase of a building, the last thing you want is for erosion to put your investment at risk. GCS can fill voids, consolidate soil and halt water migration by permeating the soil with the highly effective Alchemy-Spetec polymer resins we use. Once the bearing capacity of the soil has been increased with this process, then the structure can be lifted if necessary. 

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Topics: Slab Lifting, All Posts, Soil Stabilization, Void Fill

Put Your Homeowners Association Dues to Better Use with Polyurethane Concrete Leveling

GCS on Aug 28, 2019 10:32:24 AM

Put Your Homeowners Association Dues to Better Use with Polyurethane Concrete Leveling

Put Your Homeowners Association Dues to Better Use with Polyurethane Concrete LevelingDo you live in a neighborhood with a homeowners association?  If so, you need to alert them to the dangers of unstable soil and sinking concrete.

As the humorous graphic included in today's blog post indicates, neglected unstable soil issues can quickly consume your home improvement funds, and it won't be a positive experience. 

Ground Consolidation Services lifts slabsstabilizes soil, and fills voids with efficient and durable high-strength polyurethane resin. Prior to the soil repair process, GCS uses the Deep Look GPR system to reveal the full extent of sub-surface problems endangering your slab or structure.

- From the GCS blog article Ground Consolidation Services: What We Do.  

The illustration below will give you a quick idea of how the polyurethane concrete leveling process works.  High-strength lifting foam is injected underneath the concrete slab to shore up the weak soil or fill the void.

Slab Lift Residential - Web Resolution

Contact GCS today to schedule a presentation for YOUR homeowners association.  Call 678-337-8374 now!

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Topics: Slab Lifting, All Posts, Soil Stabilization, Void Fill

Soil Stabilization with Polyurethane

GCS on Aug 15, 2019 4:29:32 PM

Soil Stabilization with Polyurethan

Soil Stabilization with Polyurethan

Basic Soil Stabilization

Basic soil stabilization concepts are very clearly explained in the blog post Polyurethane Soil Stabilization Explained...

Unstable soil can be defined as soil that will not stay in place on its own, and therefore requires extra support. It should be noted that unstable soil can threaten the stability, security, and safety of infrastructure and can damage, degrade, and even destroy a number of structures, such as buildings, bridges, and roads. 

Soil can be stabilized with high strength polyurethane foam. Once the bearing capacity of the soil has been increased with this process, then the structure can be lifted if necessary. Read more and watch an educational Soil Stabilization animation.

Deep Soil Stabilization

Sometimes unstable soil issues are located deep beneath the surface the endangered structure. This problem calls for a specialized repair process, which is explained in the blog post Deep Soil Stabilization in Metro Atlanta...

Sometimes soil issues occur well below the surface. If the problem is five feet deep or more, then deep soil stabilization is required. GCS technicians detect the depth of soil issues with a soil probe during the standard site evaluation process. Further investigation is available via soil testing probes and ground penetration radar.

The deep soil stabilization process consists of injecting high strength polyurethane resin through long sections of hydraulic tubing. Injection starts from bottom and the technician injects more as the tubing is extracted, creating solid columns of soil stabilization resin.
Read more.

Causes of Unstable Soil

There are a variety of factors that can cause unstable soil including erosion, poor compaction, freeze/thaw cycles and decomposition. For more on the causes of unstable soil, see this multi-part blog series:

The Causes of Unstable Soil - A Brief Overview
The Causes of Unstable Soil - Erosion
The Causes of Unstable Soil - Poor Compaction
The Causes of Unstable Soil - Freezing and Thawing
The Causes of Unstable Soil - Decomposition

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Topics: All Posts, Soil Stabilization

Concrete Slab Repair in Apartment Complexes

GCS on Aug 14, 2019 9:15:30 AM

Concrete Slab Repair in Apartment Complexes

Concrete Slab Repair in Apartment ComplexesSunken or unstable slabs are a threat to all types of apartment properties, from small multi-family units in quiet neighborhoods to busy high rise complexes.  If you own or manage an apartment complex with concrete slab issues, it's important to understand the advantages of lifting with polyurethane vs ripping out and replacing the slab.

The following points are excerpted from our blog post Four Advantages of Lifting vs Replacement...

1. No Excavation

Unlike the disruptive process of tearing out and replacing a slab, polyurethane slab lifting does not require excavation.  No one will have to dig up your drive way and get dirt all over your yard.  Instead, a friendly and professional GCS crew will inject the resin through your existing slab using holes half the size of a dime.  The concrete will be leveled and the small holes will be plugged with either a non-shrink cement grout, durable epoxy or a high strength polymer cement.

2. Clean & Environmentally Friendly

The main lifting foams we use, Alchemy-Spetec's AP Lift 430 and AP Lift 475, are NSF certified safe for contact with drinking water after they cure.  With that high level of safety certification, you don't have to worry about the long term environmental impact.  Meanwhile, what happens to torn out concrete?  Very often, it ends up in landfills.

3. No Heavy Equipment Required

Slab lifting crews are like a small SWAT team: focused, efficient and precise.  There will be no need for heavy equipment on the job, tearing up your yard or making loud noises that disturb your family and/or your neighbors.  Instead, you would have a small truck parked near the slab and a small crew running hoses out of the truck to the slab surface where they are pumping the foam. 

4. No Permitting Required in Most Cases

One last thing to keep in mind: new construction often requires permitting.  Don't want to spend hours down at your local permitting office dealing with the bureaucracy?  You most likely won't have to if you just have the slab lifted instead.

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Topics: Slab Lifting, All Posts, Soil Stabilization

School Floor Collapse

GCS on Aug 7, 2019 2:07:17 PM

School floor collapse

School floor collapse

As we state on our Filling Voids page...

Undetected voids are a silent threat that can cause slabs and structures to sink or collapse without warning. Neglect can result in serious injury, litigation and even death.  GCS can protect your property and assets from these possibilities with the latest void detection and repair technologies.

Nothing illustrates this concept more clearly than a recent video from Brazil.  Luckily, no one was seriously injured when a school floor collapsed beneath a room full of students.

Click here to see the video which is embedded in an article about the incident.

The students and school administrators were lucky in this case, since everyone escaped unscathed for the most part.  Will you be as lucky if a similar incident occurs on your property?

As we point out on our Ground Penetrating Radar page...

The Deep Look wireless ground penetrating radar system uses a patent pending unique triple frequency antenna design to create the most accurate image possible of the area beneath your valuable structures.  Ground Consolidation Services will use the Deep Look GPR to take remove all uncertainty and take the guesswork out of the diagnostic process.  A crystal clear understanding of the problem provides the best foundation for accurate, durable and lasting repairs.

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Topics: All Posts, Soil Stabilization, Void Fill

Leveling and Stabilizing Steps and Stoops

GCS on Aug 2, 2019 5:05:26 PM

Leveling and Stabilizing Steps and Stoops

Leveling and Stabilizing Steps and StoopsIf you notice your steps or stoop separating from your house (as pictured at the bottom of this article) you may very well have a problem with unstable soil.  Loose and weak soil can undermine structures of all types.  When faced with a sinking structure, you generally have 4 choices:

The "Before" photo below shows a front stoop that was separated from a house due to unstable soil.  GCS stabilized the soil and lifted the stoop back into place, as pictured in the "After" photo.

stoop-before-and-after

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Topics: Slab Lifting, All Posts, Soil Stabilization

Leveling and Stabilizing Pool Deck Slabs in the Atlanta Area

GCS on Jul 31, 2019 5:12:59 PM

Leveling and Stabilizing Pool Deck Slabs in the Atlanta Area

Leveling and Stabilizing Pool Deck Slabs in the Atlanta AreaWe posted a blog article this past Spring titled Eliminate Pool Deck Trip Hazards Before the Summer.  In case you missed it, here's an excerpt...

There are a couple very common causes for the soil washout that creates the environment for a sinking pool deck slab:

  1. Cracks in the pool structure leaking water into and soil and washing it out.

  2. Loose back-fill on sloping properties.

The first cause is pretty self explanatory.  The second cause may need a little elaboration. Basically, if a pool is built on sloping property, the construction team will back-fill soil onto the side of the pool that needs it. If this soil is not compacted properly, it can start to washout over time.

Regardless of the cause, soil washout removes support from the pool deck slab and creates the condition for sinking.

In our blog post Atlanta Area Pool Deck Repair, we describe the GCS pool deck repair process from an actual job...

We repaired the problem by first filling the void with high strength polyurethane foam, and then leveling the sunken slabs.  The foam strengthens the soil as it cures, to prevent it from washing out.  In addition to the incredible strength of the foam, its light weight provides an advantage over alternate methods such as “mudjacking” with cementitious grout.  Heavier cement-based grouts will often sink or slide over time.

An additional advantage was the reduction of trip hazards due the leveling of the slabs.  Potential injury and litigation risks due to unlevel slabs were eliminated.

This repair took a maximum of about 6 hours.  The pool deck was ready for use 30 minutes after the crew cleaned up and left.  The customer was happy with the efficient and thorough repair job.

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Topics: Slab Lifting, All Posts, Soil Stabilization, Void Fill

Deep Soil Stabilization in Metro Atlanta

GCS on Jul 17, 2019 2:31:53 PM

Deep Soil Stabilization in Metro Atlanta

Deep Soil Stabilization in Metro AtlantaUnstable soil often causes structural cracking, cave-ins, and sinkholes.  Fortunately, soil can be stabilized, and water infiltration stopped with polyurethane resins. Once the soil has been consolidated and strengthened, any slabs or structures resting on it can be leveled if needed.

Sometimes soil issues occur well below the surface.  If the problem is five feet deep or more, then deep soil stabilization is required.  GCS technicians detect the depth of soil issues with a soil probe during the standard site evaluation process.   Further investigation is available via soil testing probes and ground penetration radar.

The deep soil stabilization process consists of injecting high strength polyurethane resin through long sections of hydraulic tubing.  Injection starts from bottom and the technician injects more as the tubing is extracted, creating solid columns of soil stabilization resin.

This process is also known as pressure grouting.  See the illustrations below...

Stabilize-Soil---Permeation-vs-Compaction-Grout

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Topics: All Posts, Soil Stabilization, Pressure Grouting