Laval Aircraft Apron Concrete Built for Gear Loads
Aprons and taxiway sections at aviation facilities must carry concentrated landing gear loads, resist jet fuel and de-icing chemicals, and survive Quebec's freeze-thaw cycles without spalling or joint failure. Laval Concrete engineers each slab to the aircraft fleet it serves, pours with air-entrained freeze-thaw mix, and seals joints and surfaces to aviation standards. Free written estimate on every project.
The slab thickness, reinforcement pattern, and joint spacing on an apron are not chosen from a standard table. They come from the aircraft load analysis. A Bombardier CRJ landing on a single main gear wheel creates a point load that the concrete must spread across the subgrade without cracking or settling. That load, multiplied by the number of landings per year and the freeze-thaw cycling, determines how thick the slab must be and how the joints must be spaced and dowelled.
We start every apron project by confirming the aircraft fleet, the landing frequency, and any existing pavement tie-ins. From there, the engineer sizes the slab. We then excavate to subgrade, compact the base, form the joint pattern, place reinforcement and dowels where the design calls for them, and pour a freeze-thaw-rated concrete mix with the right air entrainment to resist winter spalling.
We review the aircraft fleet, landing gear configuration, and any existing pavement. The engineer then specifies slab thickness, reinforcement, joint pattern, and dowel placement based on the load profile.
Excavate and prepare subgrade
The apron footprint is excavated to the engineered subgrade elevation, compacted in lifts, and the gravel base is placed and compacted to the specified depth. Grade is verified for proper drainage slope.
Form, reinforce, and pour
Edge forms are set to the joint pattern, rebar and load-transfer dowels are placed per the engineer's layout, and the freeze-thaw-rated concrete mix is poured, screeded level, and finished for the aviation surface.
Joint saw-cut and seal
Control joints are saw-cut on the engineered schedule, cleaned, and filled with aviation-rated joint sealant. The surface is sealed with a penetrating sealer rated for jet fuel and de-icing fluid exposure.
Common failure modes
Water Pooling and Unsealed Joints Cause Most Apron Failures
We assess failed aprons regularly, and the pattern is consistent. Water pools on the surface because the slope was too shallow or settled over time. That standing water freezes, expands, and spalls the concrete. Or joints were never sealed, or sealed with a product that does not resist jet fuel and de-icing fluid, so the sealant fails and water enters the joint, freezes, and breaks the slab edge.
We design drainage into the apron from the start, with slopes that shed water to engineered low points and perimeter drains if needed. Joints are sealed with aviation-rated sealant that resists the chemical exposure and the thermal cycling. The result is an apron that stays intact through multiple winters and heavy aircraft use. Explore our aviation facility concrete services for broader site work, or review ready mix concrete options for large pours.
Slab thickness, joint pattern, jet blast and freeze-thaw mix design.
Several inches to a foot or more, depending on the heaviest aircraft served. Engineering analysis from the aircraft gear load drives the spec; we will not pour thinner than the engineering specifies even if budget pressure exists.
For aprons that serve heavier aircraft or have larger slab panels, yes. Dowels transfer load across joints so the slab edges do not fail individually. The engineer specifies dowel size and spacing based on the joint geometry and load profile.
Aviation-rated penetrating sealers that resist jet fuel, de-icing fluid, and thermal cycling. We spec from the aviation sealer chart based on the actual exposure your apron sees, including engine run-up locations if relevant.
Air entrainment is the key, the right air content in the cured concrete lets water freeze inside the matrix without spalling. Combined with the right water/cement ratio and admixtures, the mix resists Quebec winters.
From a few weeks for a small new apron to multi-month projects for taxiway connections requiring engineering and coordination with airport operations. The full schedule is in the quote.
New apron poured to engineering for our heaviest based aircraft. Joints dowelled, sealed properly, freeze-thaw mix verified. Three winters in, zero surface scaling, zero joint failure.
Z. B5
Airport Manager, Laval
★★★★★
They knew the aviation specs cold, coordinated with our engineer on slab thickness and joint pattern. The result has held through heavy aircraft turn and full winter cycling.
Y. B5
FBO Director, Montreal
★★★★★
Apron expansion to handle a new based aircraft. Engineered specifically for the new load, tied into existing pavement cleanly. The transition joint has held perfectly.
Q. B5
Hangar Operations Lead, Terrebonne
★★★★★
Apron with engine run-up area required jet-blast-rated sealer. They specified the right product, applied to spec, the surface has held with no erosion at the run-up zone.
X. B5
Aviation Maintenance, Longueuil
From the blog
Concrete Guides & Articles
Practical reading on planning, finishes and caring for concrete in Laval.
