Projects/Gallery

Are you interested in some of our previous projects? We take pride in the quality our work and strive to satisfy our customers. Check out the gallery below to see some of our most recent completed projects. If you are interested in how SiteMix can help you, please contact us or Get A Free Estimate.

A geotechnical engineering firm contacted SiteMix Pressure Grouting, LLC to address an issue with poor soil conditions at the excavation site of an underground detention pond. The soils at the bottom of the excavation were found to have organics down to six feet below the bottom of the detention pond (20’ below grade). The GC’s grading contractor could not excavate further down to remove and replace the bad soil because there was no room on the property to layback the excavation walls. The area in need of treatment was approximately 1,500 square feet.

Repair Materials
AP Lift 475 was chosen for the project because of its industrial strength and ability to compact soil and fill voids to increase load bearing capacity

Procedures
AP Lift 475 was injected six feet deep on four-foot centers with adjoining rows offset two feet. This tight spacing ensured communication between injection points to provide maximum support, stabilize soils, and encapsulate organics. Material was injected at 30 pounds per injection rod. The soil showed signs of lift and fracturing using AP Lift 475 which was an indication that all voids were filled, soils were compacted and the area stabilized to support the design load.

Results
The job took two days to complete and used a total of 3,217 pounds of AP Lift 475 with over 100 injection points. The soil was lifted or fractured using AP Lift 475 which was an indication that all voids were filled, soils were compacted and the area stabilized to support the design load. The ability to quickly implement the grouting solution and the tremendous cost saving over a deeper excavation project resulted in the general contractor keeping the project on time and much less of a hit to the construction cost.

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A South Georgia roadway developed a sinkhole over a double 48-inch RCP storm line about 10 feet deep, threatening lane safety and mobility. Replacement costs were prohibitive and would require extended closure and excavation.

Initial Assessment
The pipe exhibited joint leakage and surrounding soil loss, creating voids under pavement and shoulder with settlement risk across the travel path. Traditional open- cut replacement would demand deep shoring, traffic detours, and high restoration costs, making trenchless stabilization preferable. SiteMix Pressure Grouting LLC was called in to do the work.

Proposed Solution
FWe selected AP Lift 475 for hydrophobic chemistry, industrial strength, and rapid set to encapsulate pipe exteriors, seal soil paths, and rebuild bearing capacity with minimal downtime.

Procedures

Lay out three rows on 3-foot centers around both barrels.
Inject at 6 lb per vertical foot to refusal for soil reconsolidation.
Pull the injection tubing vertically while injecting to form grout columns.
Encapsulate/seal pipe perimeter and monitor lift response.
Verify surface support and closure readiness.

Results

Completed in one day with 1,400 lbs placed; roadway lifted and voids eliminated.
Zero excavation and minimal traffic disruption during work.
Approximately 95% cost savings compared to pipe replacement.

A general contractor working with a homeowners association reached out to SiteMix Pressure Grouting, LLC about a detention pond wall that was leaking along the footer in several places. A detention pond is designed to collect rainwater and then let it drain slowly in a controlled manner. But in this case, water was washing out quickly in an uncontrolled manner in multiple spots under the footing.

Repair Materials
To rapidly address the problem, the technicians at SiteMix chose AP Fill 720. This single component, closed cell, hydrophobic, water-reactive, solvent and phthalate-free, low viscosity polyurethane foam has a high expansion rate, and is ideal for filling voids. In this case, AP Fill 720 was the perfect choice for filling the soil voids underneath the footer created by water erosion.

Procedures
First, the crew injected AP Fill 720 along 150 feet of the wall, installing approximately one gallon underneath the footing every two feet. Next, they installed another 75 gallons, spot treating larger voids.

Results
The job was completed in only 2 days. The detention pond wall was ready for use immediately upon completion of the work. The general contractor and the homeowners association manager were very happy with the results.

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Repairing a Leak in a Retention Pond

A property management company in metro Atlanta contacted SiteMix Pressure Grouting, LLC to address an issue with a neighborhood retention pond that was not holding water at the proper level. The customer reported that the water level was not running through the top of the concrete outlet control structure as designed, but water was exiting on the other side of the earthen dam through the concrete outlet pipe. Upon inspection, it was discovered that the pond water was piping along the outside of the concrete outlet pipe and leaking back into the outflow pipe through several bad joints in the concrete pipe.

Repair Materials
The SiteMix Pressure Grouting crew choose AP Fill 700, a single component, water-activated, hydrophobic, low viscosity, closed-cell polyurethane injection resin for the repair. Specifically, AP Fill 700 is NSF-approved for contact with drinking water, safe for the environment and allows the crew the ability to adjust the catalyst for set time. The polyurethane material is ideal for permeating soil, filling voids and water cutoff.

Procedures
AP Fill 700 was injected on 18-inch centers around the base of the OCS and outlet pipe in order to inject resin into the flow of the piping water. Specifically, the set time of the resin was reduced so that the piping water would take the resin the length of the pipe to the leaking joints. The goal was to have the AP Fill 700 react from downstream back up to the OCS. Crew members observed the pipe joints until AP Fill 700 presented and all the leaks stopped.

Results
The job took one day to complete and less than 50 gallons of resin. Within three days the pond was at full pool and the management company and neighborhood residents were very satisfied with the work. The treatment plant was extremely happy with the results.

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