Polyurethane pressure grouting – Slabjack Geotechnical

Slabjack Geotechnical

1-855-752-2522

www.SlabjackGeotechnical.com

Deep injection grouting –

Pressure Grouting is the process of pumping a cement or chemical grout into soft or weak strata of soil or voids. The grout fills these voids, thus stabilizing and strengthening the soil. Pressure Grouting has many applications. One of these includes support for existing structures or where foundations have shifted.

1: The purpose of Pressure Grouting is to control the amount of grout going into the pipe. As the process is repeated at additional elevations, the soil is compacted.
2: The process begins with the pumping of grout at the lowest elevation. The pipes are withdrawn slightly and the grout is allowed to set.
3: The process is repeated at the next elevation. Upon completion, the pipe is again withdrawn slightly to the next elevation. The grout is allowed to set. Each level of grout pumping will push the soil upward.
4: The number of grout pumpings at these different elevations that are needed to compact the soil will vary. Once the soil is compacted, it causes lift. This lift then pushes the footing and wall upward.

Slabjack Geotechnical

Superior technology, Superior polymers, Superior results.

Pressure grouting Wiki – Slabjack Geotechnical

Slabjack Geotechnical

1-855-752-2522

www.SlabjackGeotechnical.com

Pressure grouting involves injecting a grout material into generally isolated pore or void space of which neither the configuration or volume are known, and is often referred to simply as grouting. The grout may be a cementitious, resinous, or solution chemical mixture. The greatest use of pressure grouting is to improve geomaterials (soil and rock). The purpose of grouting can be either to strengthen or reduce water flow through a formation. It is also used to correct faults in concrete and masonry structures. Since first used in the 19th century, grouting has been performed on the foundation of virtually every one of the world’s large dams, in order to reduce the amount of leakage through the rock, and sometimes to strengthen the foundation to support the weight of the overlying structure, be it of concrete, earth, or rock fill. Although very specialized, pressure grouting is an essential construction procedure that is practiced by specialist contractors and engineers around the world.

Slabjack Geotechnical specializes in polyurethane pressure grouting and permeation grouting. These methods are commonly used to solidify loose soil under foundations, under-seal and stabilize concrete slabs, culverts, tanks and other liquid storage facilities.

Superior technology, Superior polymers, Superior results.

Chemical grouting – Slabjack Geotechnical

18557522522
1-855-752-2522

1-855-752-2522

www.SlabjackGeotechnical.com

Chemical Grouting is another common form of Permeation Grouting that has gained popular acceptance to strengthen granular soils is the injection of chemical solution grouts that bond the individual grains together into tone like masses that are capable of carrying loads of the structures. The chemical solutions typically consist of a base material that is mixed with a hardening agent that causes the mix to harden at a predetermined rate, depending on the compounds used and length of set time desired for a particular application.

Chemical grouting is also commonly extensively used in leaking subterranean structures, to control water flow, and to limit ground movement during excavation and construction ( lagging operation), as well as for footing support, grouted tunnel support and for pit excavation below water.

If you find yourself needing these services consult with us today.

Superior technology, Superior polymers, Superior results.

Pressure grouting? Slabjack Geotechnical

Slabjack Geotechnical

1-855-752-2522

www.SlabjackGeotechnical.com

Do you have voids? Are you dealing with water permeation? Do you have a tank that is settling or in need of support?

Slabjack Geotechnical is a leader in compaction grouting with polyurethane. With a wide range of densities and reactivities we can easily stabilize huge warehouse floors, raise tanks and structures, under-seal culverts and form curtain walls behind leaking manholes.

If you have an issue you are concerned about call us today for a consultation about how Slabjack Geotechnical can partner with you to solve your problems.

Superior polymers, Superior technology, Superior results.

Geotechnical solutions with Slabjack Geotechnical

Slabjack Geotechnical

1-855-752-2522

www.SlabjackGeotechnical.com

Geotechnical polymers have begun to revolutionize infrastructure repair and engineers are finding more and more ways to utilize the incredible power of polymers. For example;

Culvert and ditch repair; By under sealing ditches and sealing erosion at joints and inlets, ditches, dam spillways and roads are preserved. High water flows often create alternate paths for water. Given enough time or flow and failure of the culvert or ditch is assured. Injecting hydrophobic polyurethane into these voids seals out water and stabilizes the structure.

Concrete road stabilization and leveling; Commonly done at the bridge deck junction or above utility trenches to raise settled concrete roads built above, high density polymer foam is injected   Under the slab to gently raise the roadway back to proper elevation. This process typically takes as few as a couple of days verses weeks for replacement.

Railroad crossings; These are prone to settling which creates a very uncomfortable transition for both train and automobile traffic. High density polymer foam is injected underneath the rail bed, incredibly the polymer supports far in excess the weight of fully loaded trains. Often this can be completed around already scheduled traffic.

Heavy weight bearing slabs often large warehouses which house heavy machinery such as milling equipment and the like. Geotechnical scans are often performed to determine if the slab will carry the weight of the additional machinery and if not a plan to stabilize the sub grade decided upon. The least invasive by far is geotechnical foam. Through a series of injection points, liquid polymer is pumped under the slab. This expands many times in volume and sets to a ridged, high density structural foam capable of supporting thousands of pounds per square foot.

These are just a few of the many uses of today’s polymers.

Call today, Slabjack Geotechnical

Superior technology, Superior polymers, Superior results.

Chemical grouting – Slabjack Geotechnical

Slabjack Geotechnical
Slabjack Geotechnical

 

Slabjack Geotechnical has been an industry leader in chemical grouting since 2011.

The injection of high density, structural polyurethane is a fairly recent phenomenon that has many applications. Some of the most common are;

Slabjacking – where high density foam is injected underneath the slab to “float” the slab back to the proper grade. Chemical injection has several advantages over the older method of mud jacking. The ability to consolidate loose and organic materials is one of them. Because it is injected as a liquid it has a tendency to follow voids and fissures in the soil, once the reaction occurs this loose material is consolidated in the polyurethane foam.

Foundation waterproofing – injectable hydrophobic or hydrophilic polyurethane foam is injected through the foundation which creates a curtain wall on the soil side of the slab sealing out moisture. If cracks in the foundation are present holes are drilled at a 45° angle through these cracks. When the chemical is injected it completely seals the crack in addition to forming a curtain wall on the soil side of the foundation.

Void filling – Due to its relative light weight, injectable polyurethane is an ideal material for void filling and vessel decommissioning. Many formulations are available from very light polymers to polymers that are fairly heavy, as much is 40 pounds a cubic foot. For typical void filling under a concrete basement floor or a warehouse floor a good choice would be a structural polyurethane in the range of 3 to 4 pounds per square foot. These typically have compressive strength in the 60 to 100 psi range. Enough to support loads up to 5 tons per square foot.

Trench breaks – typical trench breaks are made of sand bags. While effective there are several drawbacks in the use of sandbags such as; someone needs to be in the trench, which is a dangerous place to be. It can take a significant amount of time to stack up sandbags in the trench and it can be fairly costly. Today there is a better method. Polyurethane trench break foam can be applied quickly and economically without getting in the trench. In addition the same trench break foam can be sprayed over the pipe in the trench as a “rock guard” to protect the pipe.

Through the miracle of modern chemistry, better methods and materials provide more economical and longer lasting repairs to our infrastructure. Let Slabjack Geotechnical be part of your project today.

1-855-752-2522

www.SlabjackGeotechnical.com

Superior technology, Superior polymers, Superior results.

 

 

 

 

 

 

Grain bins settling? Call 1-855-752-2522

 

18557522522
1-855-752-2522

If you have a slab on grade grain bin or silo there’s a chance it is beginning to settle. In addition to settling, over time voids can develop, left untreated settling is sure to result.

Using our patented Geo-polymer injection method we can raise and support your leaning grain bins for a fraction of the cost of replacement and generally in a few hours not days.

Call for an on-site, no pressure estimate to have your leaning or tilting grain bin leveled today.

1-855-752-2522

www.SlabjackGeotechnical.com

Superior technology, Superior polymers, Superior results.

 

 

Municipal and industrial concrete leveling and repair

18557522522
1-855-752-2522

City managers and public works directors are always looking for ways to stretch their budgets. Slabjack Geotechnical is a resource for municipalities, Public Works managers, warehouse managers, school district maintenance managers and property management firms looking for ways to reduce their infrastructure and facility maintenance costs.

Weather it be to level a roadway, stabilize a bridge over a culvert, raise and level a warehouse floor, stabilize a sea wall or support a boat launch or simply eliminate a trip hazard, Slabjack Geotechnical is your one stop shop for concrete repair and maintenance.

Using state of the art equipment and the finest polymers on the market Slabjack Geotechnical is your choice for concrete raising, leveling, and stabilizing in Washington and northern Idaho.

Call today for an on-site consultation,

1-855-752-2522

www.SlabjackGeotechnical.com

Superior technology, Superior polymers, Superior results.

 

Settled grain silos & bins

18557522522
1-855-752-2522

Occasionally a large grain silo begins to tip, with a huge investment on the line what should be done?

Geo-polymer slab lifting is an excellent option to correct the problem before catastrophic failure happens.

A series of small holes are drilled through the concrete slab and an expanding grout is pumped under the slab where it has settled. Exerting thousands of pounds of lifting force per square foot the polymer slowly lifts the slab and silo back to the proper grade.

This method is for slab on grade grain bins and silos, not “piered” foundations, those require additional repair to the piering system.

If you are dealing with a settled grain silo give the concrete raising and leveling professionals a call today, 1-855-752-2522

www.SlabjackGeotechnical.com

Superior technology, Superior polymers, Superior results.

Leaning or tilted grain silos and bins

18557522522
1-855-752-2522

A leaning grain silo or bin is a scary thing –  the potential loss of a building that can cost tens of thousands of dollars or more.

1-855-752-2522 can level your un-level slab on grade silo for a fraction of the cost of other methods such as foundation replacement or Piering.

Using our patented structural grade polymer we make careful injections under the settled side of the silo resulting in gentle lifting of the settled concrete. Using gauges accurate to 5/1000’s” we can place your silo back on a secure foundation in hours not days.

Based on the size of the Silo we either use one or if needed two rigs. This enables us, if needed to make simultaneous injections from two different areas which puts less stress on the concrete slab thus reducing the possibility of slab fracturing.

In some cases more drastic repairs are needed including soil stabilization up to twenty feet below the surface. Injecting soil stabilizing material to solidify weak layers followed by polymer injection Slabjacking to re-level concrete is a proven way to repair leaning or tilting grain silos and bins.

Call today for a no obligation consultation and estimate to repair your silo/bin today.

1-855-752-2522

www.SlabjackGeotechnical.com

Superior technology, Superior polymers, Superior results.