Terry Waschke

Alaska Concrete Technologies Inc. dba Mobile Concrete and Grout of Alaska is a locally owned company incorporated in 2000, providing concrete and grouting services throughout Alaska. Terry Waschke, owner, has over 40 years of experience in the production, pumping, and quality control of concrete and grout. We use portable batch plants, mixer trucks, volumetric mixers, and super bags, individually, or in combination, for concrete or grouting operations, anywhere in the state. We also use foaming equipment to produce cellular concrete, and specialized injection equipment for lifting buildings and slabs.

Terry has extensive experience using many admixtures in designing cellular grout mixes form 85 psi, to concrete and shotcrete mixes in excess of 12,000 psi. That knowledge along with the equipment to produce concrete and grout, combined with many years of pumping, puts Terry in the unique position to know what equipment, materials, and methods would be the most cost effective and efficient for local and remote projects.

We also have compaction grouting equipment to produce and inject low-mobility grout, to stabilize poor soils under roads, railroads, buildings, or airports, and raise to desired elevations. 2.625" injection pipes are driven down to stable ground so there is minimal ground disturbance, and most times, buildings can be raised from the outside.

Concrete Services

30+ years experience batching, with dry batch, central mix, Fastway, super bags, and a volumetric truck, most of which are computer controlled. I have set up plants in Anchorage as well as remote locations such as Kwethluk, Whittier, Sand Point, Kaliganek, New Stuyahok, and Platinum.

Use Silica Fume, low water to cement ratios with plasticizers to produce consistent high strength batches over 12,000 psi on bridge decks in remote areas such as Dutch Harbor, Healy, and Hurricane Gulch, as well as locally in Anchorage. In Seward we used super bags in the dead of winter with temperatures down to 0*F to batch 10,000 psi shotcrete for Lowell Creek Tunnel.

Lightweight Cellular Concrete from 30 pcf low-density grout to 110 pcf for floors, backfill, void fills, abandonments, and slab jacking in cold regions where low weight and good insulation are factors.

Densities from 30 pcf to to 80 pcf with neat cement used for backfill applications where dynamic and or static loading is important. Applications include backfilling marine sheet pile bulkheads with lightweight, structural support without possibility of washing out , filling MSE walls or retaining wall systems, replacing soft ground under roadways, bridge approaches, or runways. The low-density also works well in cold regions when lifting slabs or filling voids to help insulate the ground from

We have 3 foam generators to produce stable pre-formed foam for all cellular applications and do our own field testing for flow and density on every load to determine buoyancy force and volume.

Have extensive experience shipping equipment and materials and batching, at remote areas around the state including Shemya, Adak, Atka, Dutch Harbor, Sand Point on the Aleutians, to Wainwright, Barrow, and Deadhorse on the North Slope, to Bethel, Platinum, Nikolai, Kaliganek, and New Stuyahok in Western Alaska, to Circle and Fort Yukon on the East, to Ketchikan, Wrangell, Petersburg, Sitka, Juneau, and Hoonah in Southeast.

I have 40 years of experience pumping concrete with booms to 38 meters and many brands of line pumps, operating in extreme conditions in remote areas around the state. I currently use Putzmeister ThomKat line pumps from the TK20 HP for compaction grouting and shotcrete, along with a 2065 and 2070 to the TK70 for larger projects.

I can help determine what the most cost effective and efficient method to get materials and equipment to any remote location. I have extensive experience developing mix designs with many admixes for unusual and difficult projects such as plugging the legs of a gas platform 160’ deep in Cook Inlet with anti-washout, fast setting grout during 30 min slack tide schedules. I work with local providers if possible or supply what is needed. I am in the unique position of understanding the difficult logistics and realities of concrete production and QA/QC, as well as pumping in remote locations under extreme conditions.

Grouting Services

Injecting low-mobility grout to densify loose soils or unstable ground under buildings, structures, roadbeds, railroads, or runways, and then lift the structure or ground back to its original elevation, without excavation.

Use customized injection equipment and grout designs with fluidifiers, to fill voids and abandon pipes down to 1” in diameter and lengths in excess of 3000’. Building bulkheads can be an option on many projects.

Inject fluid grout underneath sunken concrete slab or floor to completely fill all voids stabilizing it, and then raise the slab back to original elevation. Standard weight or cellular grout can be used.

Low-density cellular concrete, or grout is used to fill the annular space between an older damaged host pipe and a new plastic liner pipe, usually HDPE. The pipes can be for sewer lines, or culverts under roads or railroads. The grout density is usually kept between 40-55 pcf which is lighter than water so that the water-filled liner will not float. It also needs to be extremely flowable to keep injection pressure to a minimum, around 5 psi and travel long distances (800’) or very small spaces (1-2”) and still achieve 100-500 psi. QC is very critical on every load.

We use swing-tube line pumps as well as a small hand-carried piston pump along with gauges, packers and line from 2” to 4” to handle all of our grouting needs. All can be flown, trucked, or barged to jobsites.

We use a two part polyurethane foam resin, heated, and injected under high pressure to fill voids and raise slabs. This works well for some applications but is limited in effectiveness and cost on many projects.

Means and methods for a variety of underground grouting applications including ground stabilization, building lifting, void filling, bulkheading pipes for abandonment or sliplining, as well as vent and fill port locations on pipes.