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Vebe Consistometer (ASTM)
Standard: ASTM C1170, ASTM C1176 Vebe Consistometer (ASTM) Vebe Consistometer (ASTM) is used to measure the consistency and density of roller-compacted concrete, which determines the ease with which concrete can be transported, placed, and compacted. The test involves placing a sample of freshly m ...Read more

Vebe Consistometer (ASTM)
NL 4005 X / 002


  • Description

Standard: ASTM C1170, ASTM C1176

Vebe Consistometer (ASTM)

Vebe Consistometer (ASTM) is used to measure the consistency and density of roller-compacted concrete, which determines the ease with which concrete can be transported, placed, and compacted. The test involves placing a sample of freshly mixed concrete in a cylindrical container and subjecting it to vibration using the Vebe Consistometer apparatus. The time taken for the concrete to undergo a certain degree of deformation under the influence of vibration is measured and used as an indicator of its consistency. 

The test can be performed on both laboratory and field-prepared freshly mixed concrete with a maximum aggregate size of 22” (50mm) or less. In addition to roller compacted concrete, the device can be on cement treated, aggregates & soil cement type mixer. Meets ASTM C1170 Test Method for consistency and density determinations of roller-compacted concrete. Can be used on both laboratory and filed-prepared mixes.

Features of Vebe Consistometer (ASTM)

  • Measurement of Level of Workability and Consistency: The device measures the time taken for the concrete sample to undergo a specific degree of deformation under vibration. This measurement provides a quick indication of the consistency and workability of fresh concrete.
  • Wide Aggregate Test Size: It can handle concrete mixes with a maximum aggregate size of up to 2 inches (50mm), accommodating a variety of mix designs commonly used in construction projects.

Technical Specifications

 Model Number  NL 4005 X / 002
 Dimension (mm)    480 (L) x 430 (W) x 880 (H)   
 Desk Area (mm)  380 (L) x 250(W)
 Amplitude (mm)  0.43 ± 0.08
 Cylindrical Mould (mm)     Ø240 x 200 (H)
 Approx. Weight  110 kg
 Power  220 V, 50 / 60 Hz, 1 ph

Unit Consists Of:

 Model Number  Parts Description
 NL 4005 X / 002 – P 001  Cylindrical Mould  
 NL 4005 X / 002 – P 002  Swivel Arm c/w Sliding Weight (22.7kg/50 lbs) (ASTM C1170 Method A)
 NL 4005 X / 002 - P 004  Foot Switch
 NL 7031 X / 001    Stop Watch
 NL 4013 X / 001 – P 003  Tamping Rod

*1 Copy of Manual Instruction

Optional Accessories

 Model Number  Parts Description
 NL 4005 X / 002 – A 001  Sliding Weight (12.5 kg/27.5 lbs) ( ASTM C1170 Method B )
 NL 4005 X / 002 – A 002  Sliding Weight (9.1 kg/20 lbs) (ASTM C1176)
 NL 4014 X / 015  Ø 150 x 300 mm Mild Steel Cylinder Mould

Standards

  • ASTM C1170: Standard Test Method for Determining Consistency and Density of Roller-Compacted Concrete Using a Vibrating Table: This standard specifies the procedure for determining the consistency and density of roller-compacted concrete (RCC) using a vibrating table. It outlines the apparatus, sampling, specimen preparation, testing procedure, and calculation methods required to assess the workability and density of RCC mixes.
  • ASTM C1176: Standard Practice for Making Roller-Compacted Concrete in Cylinder Molds Using a Vibrating Table: This standard provides guidelines for the preparation of roller-compacted concrete (RCC) specimens in cylinder molds using a vibrating table. It details the procedure for mixing, molding, compacting, curing, and testing RCC specimens to ensure consistency and reliability in laboratory testing.

Test Procedure of Vebe Consistometer (ASTM)

  1. Equipment Check: Ensure that the Vebe Consistometer apparatus is in good working condition and properly calibrated.
  2. Sample Preparation: Prepare a representative sample of fresh concrete according to the project specifications.
  3. Vebe Table Setup: Set up the Vebe table with the appropriate mould, ensuring it is clean and free from any residues.
  4. Sample Placement: Place the fresh concrete sample into the mould on the Vebe table.
  5. Initial Measurement: Set the timer and start the Vebe table. Record the time it takes for the concrete to reach a specified level of consistency.
  6. Recording Vebe Time: Record the Vebe time, which represents the time taken for the concrete to undergo a specified amount of vertical movement.
  7. Repeat Testing: Conduct multiple tests with fresh samples to ensure consistency and reliability of results.
  8. Data Analysis: Analyse the Vebe time data to assess the workability of the concrete. Shorter Vebe times typically indicate higher workability.
  9. Comparisons with Standards: Compare the obtained Vebe time with project specifications or industry standards to ensure the concrete meets the required workability criteria.
  10. Documentation: Document the test results, including the Vebe time, any observations, and details of the concrete mix.
  11. Clean-Up: Clean the Vebe table and mould thoroughly between tests to prevent any residue from affecting subsequent measurements.

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