Additionally, structural grouting may be done within a structure to fill cracks or correct structural deficiencies. Typical grouting programs that are done for structural reasons include: Contact grouting Modified contact grouting combined with inflow reduction Annular space grouting Backfill grouting Preplaced aggregate grouting Grouting to correct cracking or concrete defects Rehabilitation of tunnels, penstocks, and dams Many structural grouting applications are unique.
The projects require special grout formulations designed to perform specific tasks under specific circumstances. We have the experience to formulate grouts which can deal with these conditions as well as in-house testing capabilities to verify that the required performance characteristics have been met during grout trials and on the job site.
Additionally, many of the projects require operational plans and equipment specific to the task at hand. We have the capability of assessing each grouting situation and providing unique grouting solutions. Contact Grouting Contact grouting involves the filling of void space between a cast-in-place CIP structure and the in-situ geo-material or another structure.
It may be similar to annular space grouting, however, when contact grouting, normally the extent of the void space is not known. Generally, the intent of contact grouting is to increase the structural integrity of the structure. Contact grouting is often done in association with CIP liners for tunnels, shafts, mine plugs, etc.
Contact grouting may be necessary for numerous reasons, but the primary function is to ensure intimate contact of a CIP structure and the host material. Examples of where contact grouting may be used include the following: Within pressure tunnels to prevent expansion of the tunnel liner under pressure Around bulkheads and mine plugs to ensure contact with the surrounding rock To ensure a minimum thickness of liner is achieved in any cast in place liner system Within sewer tunnels to prevent sulfate attack of concrete liners from behind the liner The term contact grouting does not define the type of grout used.
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This grouting technique involves the injection of an asphalt material similar to roofing tar. The method is almost exclusively used for stopping large inflows generally greater than 1, gpm , although may be used in applications where its elasticity in the cured state is desirable. Bituminous grouting is generally used where void size or water flow is too great to allow other grouting methods to work due to grout washout. The advantage of bituminous grout is that as the hot bitumen is pumped into the ground, eventually, a leading edge of cured, elastic bitumen forms.
Additionally grout fills the cured leading edge and expands the grout mass, similar to inflating a balloon. The leading edge forms a protective layer, keeping additional grout from being washed out.
Eventually, the mass will grow large enough to either fill the void space available at the injection point, creating a seal within the void. Bituminous grouting applications are most often associated with mining operations such as quarries or with dams which are experiencing large volumes of seepage. Goettle has the capability to design and place bituminous grouts based on the project requirements. However, this can be confusing due to the large number of chemical grouts available and the numerous grouting techniques for which they can be utilized.
Generally, chemical grouts may be applicable for any type of grouting technique structural, permeation, consolidation. The decision to use a chemical grout should be based on the advantages of the chemical grout over cementitious grouts, as the material cost is generally higher. This, along with other characteristics, often makes it the preferred choice when performing water cutoff grouting.
It is often used to seal off rock faces, concrete, or other leaking structures. Additionally, polyurethane is used in permeation grouting to provide bearing capacity improvements, in structural applications, or to fill large voids due to some formulations expansive characteristics. Our drilling experience includes top drive rotary percussive, top drive rotary, down-hole-hammer, wire-line core drilling, and thinwall core drilling.
Our drillers have performed drilling up to several thousand feet in depth and up to 18 inches in hole diameter. Typical applications for our drilling services include: Instrumentation installation piezometers, inclinometers, etc. Our personnel have performed drilling operations in structures with less than 5 ft of working room and thousands of feet from power and personnel access.
We commonly performed work within dam galleries, on dam faces and spillways, and within tunnels and adits of all sizes. Landslide Remediation TBD — Landslide Remediation description Ground Modification Soil Anchors A soil anchor is a device designed to support a structure and is used in geotechnical and construction applications. Marine Construction Braced Cofferdams When your construction operations take place in or near the water, a cofferdam is a simple solution.
Salk Hall. Project Facts. Project Scope. Completed For. Contact Us. Related Projects. This Art Deco-style building was later renovated and expanded to accommodate the Salk Hall and the dental department.
This building also houses the interesting Dental Museum and the Pharmacy Museum. Add To Collection. Email Location. What's Nearby? Similar Locations. Get Directions - Salk Hall. Note: Please seperate each email address with a comma. Sign in with Facebook. Sign in with Google. Keep me logged in. Forgot your password? The Art Deco building is named after Jonas Salk, who conducted his research on the first polio vaccine in a basement laboratory while on the faculty at the University of Pittsburgh.
See More. It was designed by Richard Irving and Theodore Eicholz. The bed hospital was originally part of the Medical Center associated with the University and was intended to be used primarily to treat communicable diseases. However, when antibiotics virtually eliminated the need to quarantine patients, the building had become a financial burden on the city.
For a time, the upper floors of the building served as a residence for students. Page Transparency. Facebook is showing information to help you better understand the purpose of a Page.
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