Humboldt provides a complete selection of concrete testing equipment for fresh and in-place concrete structures in accordance with ASTM, AASHTO, and other standards. We’re your one-stop source for concrete air meters, compression machines, concrete test hammers, corrosion testing, ultrasonic tests, testing for moisture in cured slabs, concrete cylinder testing, and all related accessories.
Fresh Concrete Testing
Humboldt provides a full range of fresh concrete testing equipment for construction jobs of all sizes, in accordance with ASTM C321 and other standards.
The H-2784 Super Air Meter – This high-quality air meter measures air void spacing and air volume of fresh concrete to help users better understand the freeze-thaw durability of fresh concrete.
The H-2783A Concrete Air Meter – This easy-to-use meter features Humboldt’s all-brass Super Pump, the most reliable and highest quality pump available.
Slump Test Equipment -- The concrete slump test measures the consistency, or workability, of fresh concrete in accordance with ASTM C143 and ASTM C143M. A slump cone or Abrams cone is filled with fresh concrete. When the cone is lifted from the concrete, the distance between the top of the cone and the top of the subsided concrete is known as the slump.
The H-3637 Standard Slump Cone Set provides the basic test components, including slump cone, base plate, and tamping rod, in an easy-carry configuration.
The H-3635 Deluxe Slump Cone Set includes the Standard Cone Set plus a brush, scoop, and funnel to aid in filling the slump cone.
Maturity Meters -- Concrete maturity testing assesses compressive strength, supporting ASTM C107. The testing can aid in decisions regarding concrete curing conditions and mix design.
Humboldt Concrete Maturity Sensor System – Our complete maturity sensor system utilizes CMOTS to provide a wireless and reusable system for continuous monitoring of concrete temperatures, maturity, and strengths by computer, phone, or tablet.
SmartRock2 Wireless Maturity Sensor – This rugged, mobile app-based sensor continuously monitors concrete temperatures from fresh to hardened stage. It’s also used to estimate strength based on the maturity concept.
Unit weight – Humboldt provides measures, strike-off plates, and scales that support ASTM C29, C138, C192 standards for accurate measurement of the unit weight of concrete, a key step in determining strength, workability, and durability.
Self-consolidating concrete – Humboldt offers a range of tools to measure the fluidity and rapid assessment of static segregation resistance, in line with ASTM C1621, C1621M, C1611 standards on of self-consolidating concrete.
Flexural Beam Testing
Flexural tests evaluate a concrete sample’s flexural strength, also known as the modulus of rupture – the amount of applied force required to cause a concrete specimen to fail. Flexural tests measure a combination of three types of stress – compressive, tensile, and shear.
Flexural tests on concrete are performed two ways. Center-point load tests (ASTM C293) concentrates stress at the sample’s center point, while three-point load tests (ASTM C78) apply force uniformly to the middle one-third of the specimen. Center-point load tests typically show results 10 to 15 percent higher than three-point test results.
Humboldt Flexural Test Solutions
Humboldt offers a wide range of flexural test methods, including compression machines designed specifically for flexural tests, and hydraulically driven portable continuous load machines for field testing beam cross-sections. In addition, beam attachments can be mounted to all of our HCM-0030 compression machines. We also provide a wide selection of beam testing equipment and accessories from several manufacturers.
Portable Concrete Beam Tester (ASTM C293) for 6" x 6" beams of 16" to 18" in length - hydraulically driven beam breaker uses the center-point loading method. Adding a micro-pump provides a continuous load pressure to the testing procedure in accordance with ASTM C293 and ASTM C78.
H-3031CL Continuous-Load Beam Breaker (ASTM C293) for 4" x 4" x 14" beams - To enable quick and accurate measurement of flexural strength, the H-3031CL incorporates a screw jack that provides a continuous application of force against the test beam.
Compression Tests
Compression tests reveal the compressive strength of a concrete structure by applying force sufficient to crush the sample. Compressive strength is a primary consideration in design and construction of concrete structures.
Humboldt Compression Testing Solutions
Humboldt offers a complete range compression machines for measuring the compressive strength of concrete beams, cylinders, cubes and other structures. Our machines meet or exceed ASTM C39, C78, C293, C469, C496, C1019 and C109 standards.
HCM-0030 Compression Machine, 30,000lbs (133.5kN) – Suitable for cylinders, cubes, beams and cores of standard strength concrete mixes.
HCM-1000 Compression Machine, 100,000lbs – Based on 2500 frame, configured for use with lower strength materials.
HCM-2500 Compression Machine, 250,000lbs
HCM-3000 Compression Machine, 300,000lbs
HCM-4000 Compression Machine, 400,000lbs
HCM-5000 Compression Machine, 500,000lbs
HCM-4000B Masonry Series Block Machines
HCM-5000B Masonry Series Block Machines
HCM-4000P Masonry Series Prism Machines
HCM-5000P Masonry Series Prism Machines
HCM-5080 Automatic Controller – This easy-to-use controller automates testing work flow for concrete compression frames of all types.
HCM-5070 Automatic Controller – It’s designed to control two compression machines, typically cylinders and beams.
HCM-5090 Digital Indicator – Our high-quality controller for concrete compression machines produces precise results.
Cylinder Prep Tests
Construction and engineering firms use concrete test cylinders for quality control purposes – to ensure that concrete cures properly, that structures can support desired loads, and that different batches of concrete uniformly meet design strength standards. A variety of machines and tools are used for cylinder testing and end grinding, as well as the storage and monitoring of cylinder specimens during the curing process.
Humboldt Cylinder Testing Solutions
We offer a robust line of cylinder capping equipment, vibrating tables and accessories for cylinder compaction tests, as well as concrete cylinder end grinders,
H-2951 Cylinder Capping Kit – Includes cylinder capper for 6” and 12” cylinders, compound melting pot, flake-style capping compound and ladle.
H-3755 Vibrating Table – Used for cylinder compaction, this cushioned impact vibrating table has a 300lb. load capacity.
Concrete Cylinder End Grinders
Humboldt’s line of end grinders and specimen grinding machines supports ASTM D4543, ASTM C31, ASTM C39, ASTM C192, and ASTM C617.
H-2962 120V Concrete Cylinder End Grinder – This automatic cylinder end grinder quickly grinds specimen ends plane and parallel prior to compression tests.
HC-2979.5F.3 Specimen Grinding Machine
Concrete Curing and Storage
Humboldt offers a complete range of concrete curing and storage machines and systems that support ASTM C192, ASTM C511, and ASTM C31.
H-2748 UltraMist Curing Room Humidity System Kit is designed to maintain concrete curing rooms within ASTM C511 specifications by controlling temperature at 23°C ±2°C and keeping relative humidity above 95% using a timed hot and cold water misting system, eliminating the need for HVAC while evenly covering a 10 x 15 ft. room to keep specimens consistently moist.
lH-2968 Concrete Curing Box, Deluxe – This plastic curing box for concrete cylinders is rugged, lightweight, and portable.
Non Destructive Testing
Non-destructive testing (NDT) of concrete provides ways to monitor the condition of concrete structures without permanently altering the concrete in the process. Various NDT tests use sound, vibration, radar, and ultrasonic waves to identify the effects of time, weather and geological factors on the condition of concrete buildings and infrastructure.
Various non-destructive test procedures are conducted using different tools. Schmidt hammers, or Swiss hammers, measure properties of elasticity such as surface hardness and penetration resistance. Ground penetrating radar systems are used to measure the thickness of sub-surface concrete and to locate cable and other steel objects embedded in the concrete.
Rebar locators use the eddy current pulse induction principle to identify rebar in reinforced concrete, which is critical prior to drilling or cutting, and can used for corrosion analysis. Corrosion testers are used to detect corrosion before the expanding rust exerts pressure inside the concrete, causing it to expand, crack and damage the surrounding concrete.
Ultrasonic testing of concrete is an in-situ test to measure the thickness of concrete and tunnel linings, and to determine localized defects such as voids, honeycombing and delaminations. Ultrasonic testing is also used to detect objects like pipes and tendon ducts beyond the rebar layer. Resistivity meters use data from use of electrodes (pins), and test leads to measure earth resistance, or the resistance to earth of a buried electrode, such as a ground rod or an anode.
Humboldt offers a complete line of non-destructive test equipment for concrete testing in the field and lab. Our NDT products conform to ASTM C805, ACI 318, ASTM C876, ASTM C597, AASHTO T358.
Schmidt Hammers ASTM C805
Ground Penetrating Radar (GPR)
Rebar Location ACI 318
Corrosion Testing ASTM C876
Ultrasonic Testing ASTM C597
Resistivity ASSHTO T358
Crack Monitors
Crack monitors are used to measure cracks in the concrete, as well as caliper marks.
Humboldt provides only the highest quality concrete crack monitors available, in support of ACI 2242. Our crack monitors feature highly accurate scales and a unique pin system, which ensures accurate zeroing of the monitor when affixing it to the surface to be monitored.
Contact a Humboldt representative for more information or specifications on our complete line of concrete testing products.
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