AAC Products
AAC Slab Panels
AAC slab panels are reinforced AAC elements used in engineered horizontal assemblies where lightweight panels, installation planning, and project-specific documentation are required. MHE Group is a global AAC producer producing and delivering AAC building systems at its associated AERCON plant, backed by 40+ years of AAC engineering, factory development, installation, and project delivery expertise.
When to choose Slab Panels
Choose slab panels for floors and decks. They are reinforced for floor loads such as occupancy, finishes, and partitions, and span between bearing walls or beams. Roof panels use the same principle for the lighter loads of a roof deck, so a building with AAC floors and an AAC roof typically combines both.
Applications
- Engineered slab systems
- Residential and commercial horizontal assemblies
- Projects that benefit from lightweight panelized construction
- AAC building systems that require coordinated slab panel layouts
Technical data (ICC-ES ESR-1652)
The AERCON plant in Haines City, Florida, which produces the AAC products MHE Group supplies in the United States, holds ICC-ES Evaluation Report ESR-1652 for AERCON reinforced AAC panels (reissued May 2026, valid through May 2027). The values below are quoted from Table 2 of that report. They are material design values for strength category AC4, not whole-wall or whole-assembly ratings; the final design is confirmed by the project engineer.
| Property | AC4 |
|---|---|
| Nominal dry density | 40 pcf (600 kg/m³) |
| Minimum compressive strength, f′c | 626 psi |
| Allowable compressive strength | 157 psi |
| Allowable flexural compressive strength | 209 psi |
| Allowable flexural tensile strength | 24 psi |
| Allowable shear strength | 17 psi |
| Modulus of elasticity, E | 360,000 psi |
| Coefficient of thermal expansion | 4.4 × 10⁻⁶ /°F |
| Thermal conductivity, k≈ 0.16 W/m·K | 1.11 Btu·in/(ft²·h·°F) |
| Thermal resistance per inch, R/in (computed as 1 ÷ k)Material value, not a whole-assembly R-value | ≈ 0.90 |
| Design dead weight | 49 pcf |
Fire resistance
- Reinforced floor and roof panels at least 8 in (203 mm) thick and 2 ft wide: 4-hour restrained assembly rating, and 1-hour unrestrained rating when the reinforcement has at least 7/8 in (19.1 mm) cover (ASTM E119).
- Partition panels 4 in (102 mm) thick, category AC4: 3-hour fire-resistance rating (nonbearing).
- The material is noncombustible per ASTM E136.
Further reading: AAC fire safety and what AAC is. For wider comparisons, see fire-resistant wall systems, building materials for hurricane-prone areas and lightweight vs traditional concrete construction.
Product sizes listed in ESR-1652
| Product | Maximum length | Thickness | Width |
|---|---|---|---|
| Floor Panel | 19 ft 6 in | 8, 10, 12 in | up to 24 in |
- Allowable deflection: roof panels L/180 under total load and L/240 under live load; floor panels L/240 under total load and L/360 under live load.
- Reinforcing bars 3/16 to 1/2 in diameter with anticorrosion treatment per ASTM C1694 and minimum 1/2 in AAC cover. Panel span, load, and reinforcement are designed per project.
Source: ICC-ES ESR-1652 (PDF), Tables 1 and 2, held by AERCON Florida, LLC, Haines City, Florida. Compliance basis: ASTM C1386 and C1694 (material and reinforcement), ASTM E119 (fire tests), ASTM E136 (noncombustibility), for the IBC and IRC. Report status can be checked at icc-es.org; values on this page are updated when the report is reissued.
Technical Considerations
- Panel span, reinforcement, bearing, topping, and connection details must be confirmed by project engineering.
- Handling and lifting plans should be prepared before delivery.
- Panel layout should be coordinated with openings, services, and structural support conditions.
Design and Installation Notes
- Request current product data before final specification.
- Coordinate slab panel drawings with structural and MEP requirements.
- Confirm transportation, lifting, storage, and installation constraints early.
Completed projects
University of South Florida residence hall, Tampa, Florida: AAC hollowcore slab panels combined with AAC wall panels.
Mitsubishi Polysilicon Plant, Theodore, Alabama: AAC floor panels together with AAC roof and wall panels.
SEB Civil Engineering building, Georgia Tech, Atlanta, Georgia: AAC slab and roof panels on load-bearing AAC block walls.
More projects are listed in the North American AAC project reference list.
Related AAC Product Paths
- AAC Roof Panels
- AAC Vertical Wall Panels
- AAC Wall Systems
- Reinforced AAC panels overview
- View the complete AAC product catalog
- Request global supply and export planning
Request a quote for Slab Panels
Request a quote, product documentation, supply information and technical review support for aac slab panels from MHE Group.
Request a QuoteFrequently Asked Questions
What are AAC slab panels used for?
AAC slab panels are used in engineered horizontal assemblies where reinforced AAC panel systems are appropriate for the project design.
Are slab panels selected the same way as roof panels?
No. Slab and roof panels may share AAC material logic, but they have different load, bearing, connection, and assembly requirements.
Can MHE help with panel planning?
Yes. MHE can support product documentation review, panel layout coordination, and supply planning through qualified networks.
What is the difference between AAC slab panels and roof panels?
Both are reinforced spanning panels. Slab panels are designed for floor loads, roof panels for roof loads, which are usually lighter. Thickness and reinforcement are confirmed per project by the engineer.