In the early years of concrete construction, engineers quickly recognized that trapped air within fresh concrete could drastically affect its durability, especially in freeze-thaw environments. The need to accurately measure and control air content led to the development of the first practical air meters in the mid-20th century. Early researchers discovered that by applying air pressure to a sample of fresh concrete, they could determine the percentage of entrained air using the principles of Boyle’s Law. This innovation provided an effective way to gauge the quality of concrete mixtures and ensure long-term strength and durability.

As concrete technology advanced, engineers began to understand that not only the total amount of air but also the size and spacing of the air voids played a key role in preventing cracking and scaling. Traditional pressure meters evolved over time to become more precise and easier to use, offering accurate field readings that could be relied on for quality assurance. These improvements made it possible to detect subtle variations in mixes before the concrete hardened, reducing costly failures and ensuring that materials met design specifications.

Today, air meters are an essential tool in the field and laboratory for measuring the air content of fresh concrete. Used in conjunction with testing standards such as ASTM C231 (pressure method) and ASTM C173 (volumetric method), they allow technicians and engineers to verify that each batch meets performance and durability expectations. The invention and continued refinement of the air meter have transformed how concrete is tested and produced, ensuring safer, longer-lasting infrastructure projects across the world.

At Kuka Sales Group, we’re proud to support the concrete testing industry with a full range of Air Meters, replacement parts, and repair kits—all backed by decades of experience and trusted service. Visit kukasales.com to explore our selection or contact our team for expert assistance. Plus, for a limited time, Air Meter Repair Kits are 10% off, making it easier than ever to keep your testing equipment performing at its best.