Lightweight Concrete Roll-A-Meter is a lightweight version of the popular roller meter. It is a simple and accurate device for measuring the air content, including entrained air, of concrete mixes. It is required for use with lightweight aggregate concrete, but can reliably be used with any mix and strike off bar. The lightweight hard-anodized aluminum version is less than half the weight of earlier bronze models. The base and top are highly scratch and wear-resistant and fastened together with quick-acting stainless steel clamps. Water and isopropyl alcohol are added to the zero graduation on the neck, and the meter is inverted, rolled, and rocked until the air is removed from the concrete. Percent of air is read directly from the liquid level on the scale.
HM-32L may also be used as a pycnometer for determining the specific gravity of sand, gravel, and cement. Unit is supplied in foam-lined plastic carrying case with Strike Off Bar, Tamping Rod, Syringe, Baffle-Bottom Funnel, and instructions. The strike off bar andthe unit has a 130in³ (2,130ml) base volume and a maximum diameter of 8in (203mm).
Features:
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Works with any concrete, but is required for lightweight aggregate concrete mixes
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Lightweight and portable
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Assembly is wear- and scratch-resistant hard-anodized aluminum
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Can be used as a pycnometer in determining specific gravity
Included Items:
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Lightweight Concrete Roll-A-Meter
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Syringe
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Baffle-Bottom Funnel
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Plastic Carrying Case
Meets Test Methods:AASHTO T196 ASTM C 173
Features and Benefits
The Lightweight Concrete Roll-A-Meter boasts a range of features that make it an ideal tool for measuring the air content of concrete mixes. Some of the key benefits of this device include:
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Lightweight and Portable: Constructed from hard-anodized aluminum, the strike off bar and the Roll-A-Meter is less than half the weight of earlier bronze models. This makes it exceptionally easy to transport and use in the field, ensuring that you can take accurate measurements wherever you need them.
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Simple and Accurate: Designed for ease of use, this simple and accurate device allows users to quickly and reliably determine the air content of their concrete mixes. This ensures that your concrete meets the necessary specifications without any hassle.
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Durable and Corrosion-Resistant: Featuring a hard-anodized coating, the Roll-A-Meter is built to last. Its corrosion-resistant finish ensures that it can withstand the rigors of regular use in the field, providing you with a reliable tool for years to come.
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Watertight Seal: The fast-acting one-piece self-locking stainless steel clamp ensures a watertight seal between the top section and bowl. This prevents water from entering the device and affecting the accuracy of the readings, giving you peace of mind that your measurements are precise.
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Easy-to-Read Scale: The see-through window in the neck of the meter features an easy-to-read engraved scale graduated from 0 to 9% with 0.25% sub-graduations. This makes it simple to read the air content of the concrete mix, ensuring that you can quickly and accurately assess your materials.
Applications and Technical Details
The Lightweight Concrete Roll-A-Meter is designed for use in a variety of applications, making it a versatile tool for professionals in the field. Some of the key applications and technical details include:
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Concrete Mixes: The Roll-A-Meter is used to determine the air content of various concrete mixes, including those containing lightweight aggregates, air-cooled slag, or highly porous aggregates. This makes it an essential tool for ensuring the quality and consistency of your concrete.
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Lightweight Aggregate Concrete: Particularly useful for testing lightweight aggregate concrete, the Roll-A-Meter can accurately measure the air content of these mixes. This ensures that your lightweight concrete meets the necessary specifications and performs as expected.
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Field and Laboratory Settings: Designed for use in both field and laboratory settings, the Roll-A-Meter is a versatile tool that can be used in a range of environments. Whether you’re on-site or in the lab, this device provides reliable and accurate measurements.
Some of the technical details of the meter include:
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ASTM C-173 Compliance: The Roll-A-Meter meets ASTM C-173 specifications, ensuring that it meets industry standards for accuracy and reliability. This gives you confidence that your measurements are precise and trustworthy.
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Calibration Measuring Vessel: The meter comes with a calibration measuring vessel, allowing users to calibrate the device for accurate readings. This ensures that your measurements are always reliable.
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Tamping Rod and Baffle Funnel: Included with the meter are a tamping rod and baffle funnel, which are used to prepare the concrete mix for testing. These accessories ensure that your concrete is properly prepared for accurate measurements.
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Carrying Case: The meter comes with a durable plastic carrying case, providing protection and storage for the device and its accessories. This ensures that your Roll-A-Meter is always safe and ready for use.
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Spanner Wrench: The meter includes a spanner wrench, which is used to adjust the device and ensure accurate readings. This tool ensures that your Roll-A-Meter is always properly calibrated and ready for use.
By incorporating these features and technical details, the new sections provide a comprehensive overview of the benefits and applications of the Gilson HM-32L Lightweight Roll-A-Meter, ensuring that readers have all the information they need to make an informed decision.
Accessories to Concrete Air Entrainment Test: Air Content
Tamping Rods for Slump Cone Test have hemispherical tips and are for use when consolidating concrete specimens in required tests that include slump, air content with tamping rod, and tamping rod strength
Concrete Strike Off Bar is used to remove excess material. A measuring cup is included in the kit for accurately measuring and calibrating air content in concrete mixes.
Replacement Gauges in Concrete Air Meter Parts are quality, dependable gauges that fit most Type B Concrete Air Meters along with the strong strike off bar and tamping rod.
Replacement Air Pump fits Gilson Concrete Air Meters (and those from other manufacturers) with solid construction that offers a longer service life. For a list of more replacement parts, view our concrete air meter replacement parts page.
