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Pressure air meters are the tool of choice for measuring air content in freshly mixed concrete. From top of the line air entrainment meter to a precise calibration vessel for calibration adjustments, you can measure the air entrained in your concrete mixes with confidence and get optimal performance.
Lightweight coarse aggregates, sand content or dense concrete, our air meters meet ASTM C231 standards. With accurate measurements, you get the control you need over the air content and air voids in your hardened concrete.
Our most popular is the fresh Concrete Air Meter with Stainless Steel Gauge, industrial rack and pinion mechanism, ±1% of full scale.
Our air entrainment meters come as complete kits, including all necessary components for accurate testing and user convenience.
All our air meters meet ASTM C231 standards and have calibration adjustments for precise accuracy. Made from high quality materials like stainless steel and cast aluminum they are durable and long lasting.
The newest are the Pressure Air Meter Kit with a rugged Gorilla Pressure Gauge, tamping rod and plastic carrying case for convenience and the Super Air Meter with digital gauge. For a quicker and cheaper way to test entrainment in a fresh concrete sample our chace air indicator kit.
Our starter kits also come with a plastic carrying case for convenience. Whether you’re working with lightweight coarse aggregate or other types concrete air testing meters have everything you need to test accurately.
Type B air meters are used for the required tests to evaluate air content and ensure the concrete meets design specifications. These tests are crucial to ensure the concrete meets design specifications and environmental needs especially in harsh climates to enhance durability and performance.
Although it may seem counterintuitive, adding it to concrete actually improves its durability through microscopic air voids. It’s important to differentiate between it in concrete and entrapped air, that’s why air meters are necessary for measurement.
By using a type B concrete air meter you can control the quality and performance of the concrete. With precise results you can evaluate the air entrained concrete, including important parts like gaskets and O-rings for air meters, and adjust as needed.
Air meters for testing entrained air in concrete offer many benefits for air content assessment. By measuring air entrainment you can achieve the desired level of entrainment and improve durability against freezing conditions.
Testing is efficient so the bubbles in the concrete mix are correctly assessed for optimal performance.
These tests also give you an overall view of the concrete quality to ensure it meets the specification and standards. Concrete air meters allow you to monitor all bubbles and voids for better workability, finishing and construction quality.
Non entrained concrete has some moisture levels; when the temperature drops to freezing the moisture content expands. Without enough room the surface can crack and scale. The billions of bubbles created with entrainment act as reservoirs to hold the expanding moisture. So having a concrete air meter to check the air content of fresh concrete can be the difference between a beautiful building.
Using concrete air meters to measure entrainment is critical. They measure air voids in fresh concrete for better durability.
When working with fresh concrete entrainment meter you need to use an entrainment meter or testing equipment to make sure you’re treating the air entraining admixture correctly. If not done correctly problems can arise that can compromise the strength of the concrete. When it comes to concrete air entrainment meter the spacing and size of the bubbles is key. The bubbles should be spaced no more than 0.01 inches apart throughout.
Without the right spacing the concrete mixture durability is compromised and you might have to start all over. Entrainment testing equipment gives you the most accurate view of the air content and top quality products is the way to get precise results.
We also have full range of equipment and specialized equipment such as small batch mixing of various materials like this Mortar Mixer, 5L (5.3qt) for concrete mixes. Browse the full list here or contact us for more info.
The air meter is an instrument to test the air content that measures the volume of air in concrete. The meter has a large easy to read gauge that makes it user friendly and accurate in measuring entrained air. This test is important to ensure the concrete mix has the desired level of air entrained concrete as specified for the project’s climate and concrete properties. The meter gauges air content by pressure method which involves applying pressure to a sealed concrete sample and measuring the change in pressure to determine the volume and quantity.
The aggregate correction factor plays a big role in measuring air content as it accounts for the influence of aggregate particles on these measurements. Accurate readings are defined as a percentage at full scale, indicating the maximum range of measurement the devices can provide. Different types of aggregates—coarse or fine, high or low density—affect the results differently. Therefore, accurately adjusting for these variations is crucial for the precision of air content tests which is vital to ensure air entrainment meets durability requirements.
Increased Freeze-Thaw Resistance: Air entrained concrete has tiny chambers for frozen water to expand reducing internal distress and cracking.
Our concrete air meters are designed for reliable operation, ensures accurate measurement every time.
Improved Workability and Cohesion: Air entrained concrete improves the workability of the mix, easier to handle, place and finish. Reduces segregation and bleeding for a more uniform and stable concrete.
Durability Against Salt Scaling and Thaw Cycles: Concrete exposed to deicing salts and harsh freeze-thaw conditions benefits from air entrainment which helps guard against surface scaling and deeper damage.
Air in concrete affects:
Compressive Strength: A slight loss of strength with increasing air content but the gain in durability makes up for it.
Density and Permeability: Entrained air reduces the density of concrete and increases its porosity which affects thermal and acoustic properties.
Resistance to Damage: Air-entrained concrete is highly resistant to environmental stresses especially in freeze-thaw conditions.
Our air meters have large stainless steel clamp levers with a holding capacity of 2,500 lbs for durability and operational reliability.
ASTM standards specifically ASTM C231 requires testing of air content in concrete using a concrete air meter. This ensures consistency and repeatability in testing and provides a basis for evaluating the durability and quality of concrete mix and air entraining admixture.
Testing concrete mixes for air entrainment is critical to ensure the durability and strength of the final product.
Air entrainment involves deliberately adding tiny bubbles into the mix through entraining agents or admixtures. These agents lower the surface tension of the mixing water so more can be trapped as microscopic bubbles. Properly consolidating concrete specimens is critical to achieve uniform distribution of bubbles and accurate test results. It’s not just about adding; it’s about creating a stable system of evenly distributed air voids that can withstand the mechanical stresses of handling and environmental stresses of moisture and temperature.
Increased Freeze-Thaw Resistance: Air-entrained concrete offers better freeze-thaw resistance, it’s necessary for use in cold climates and areas where de-icing is required.
Our air meters have large stainless steel clamp levers with a holding capacity of 2,500 lbs for durability and operational reliability.
Better Workability: The air bubbles in the mix improves the workability of the concrete, making it easier to mix, place and finish. This is very useful in complex formworks or when pumping concrete to heights.
Reduced Segregation and Bleeding: By stabilizing the distribution of aggregate and cement particles in the mix, entrained air reduces the tendency of the heavier aggregates to settle thus decreasing bleeding and segregation.
Increased Durability: Beyond freeze-thaw damage, air entrained concrete is less prone to other durability issues like alkali-silica reactions and sulfate attack because of the cushioning effect of the air voids that reduces stress concentration.
While air entrainment has many benefits it also has several challenges to be managed:
Reduced Compressive Strength: Introducing into concrete reduces its overall density and thus its compressive strength. This must be compensated by adjusting the concrete mix design especially in structural applications.
Consistency in Air Content: Achieving the right air content requires precise control over the batching and mixing process as fluctuations in material proportions or mixing time can result to inconsistent air content and affect the performance.
Readings are defined as a percentage at full scale, indicating the maximum range of measurement the devices can provide.Entrained Air in Hardened Concrete
In hardened concrete, the presence of entrained air bubbles gives the following benefits:
Increased Durability: The bubbles act as internal reservoirs to accommodate the expansion of water upon freezing so internal pressure is relieved and cracking is prevented.
Improved Workability: Entrained air improves the workability of fresh concrete making it easier to mix, place and finish.
Enhanced Resistance to Scaling and Deterioration: By providing voids for water expansion the air bubbles prevent scaling and deterioration due to deicing chemicals or freeze-thaw cycles.
Reduced Permeability: While the direct effect on permeability is complex, the overall effect of entrained air can lead to reduced water and chloride ion penetration.
Testing with our air meters ensures the air content is accurately measured for high quality and durable concrete structures.
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