ASTM C1170 Vibrating Table Roller-Compacted Concrete Test

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ASTM C1170 Roller Compacted Concrete Test Machine | UnitedTest

UnitedTest supplies ASTM C1170 compliant testing equipment for measuring Vebe consistency and hardened density of roller-compacted concrete (RCC). This vibrating table test characterizes zero-slump stiff concrete mixtures where standard slump tests do not apply.

ASTM C1170 Standard Test Method for Determining Consistency and Density of Roller-Compacted Concrete Using a Vibrating Table

ASTM C1170 measures Vebe consistency and hardened density of zero‑slump roller‑compacted concrete (RCC) using a vibrating table and weighted surcharge assembly. Conventional slump tests fail to evaluate extremely dry, stiff, no‑slump RCC mixtures, and this vibration-based Vebe-type test provides the reliable alternative for concrete quality control and mix design validation. UnitedTest manufactures the full ASTM C1170 testing machine for civil engineering and concrete laboratories.

Core Test Principle

This is a modified Vebe‑consistometer principle for zero‑slump concrete.

1. Fresh stiff concrete is placed in the cylindrical mold mounted firmly on the vibrating table.

2. The weighted surcharge is lowered onto concrete surface. Vibration is activated.

3. Vibration mobilizes aggregate particles, expels entrapped air, consolidates concrete under combined vibration and static surcharge pressure. Vebe time is the elapsed vibration time until full consolidation is visually achieved.

4. After consolidation, total mass of mold‑specimen assembly is measured. Density = consolidated specimen mass ÷ calibrated internal mold volume.

Standard slump test relies on gravitational slumping, which produces zero slump for stiff RCC and cannot differentiate workability grades; this vibration‑and‑surcharge method quantifies workability by consolidation time and also yields compacted density data.

ASTM C1170 Vibrating Table Roller-Compacted Concrete Test

Specific Test Methods

Two alternative test procedures are defined, differentiated by surcharge mass, selected based on concrete consistency class

Procedure A	Uses 22.7 kg (50 lb) surcharge. Applied for extremely‑dry consistency concrete, or when Procedure‑B Vebe time ≥ 30 s.
Procedure B	Uses 12.5 kg (27.5 lb) surcharge. Applied for stiff consistency concrete, or when Vebe time ＜ 20 s.

For very‑stiff consistency (Vebe time 20‑30 s), either Procedure A or B is acceptable.

Consistency output is reported as Vebe consistency: the vibration time (seconds) required for full consolidation under surcharge load. Density is calculated as consolidated specimen mass divided by mold internal volume

Specimen Information

Test material: Freshly mixed, unhardened concrete (laboratory‑prepared or field‑sampled).

Aggregate size limit: Nominal maximum aggregate size ≤ 50 mm (2 in). If aggregates exceed 50 mm, wet‑sieve sample over 50‑mm sieve following ASTM C172, test only the passing fraction.

Mold: Cylindrical,

Inside diameter: 240 ± 2 mm [9½ ± 1/16 in.]

Depth: 200 ± 2 mm [7¾ ± 1/16 in.]

Wall thickness: 6 ± 2 mm

Testing Equipment Required for ASTM C1170 Vibrating Table Roller-Compacted Concrete Test

Concrete Test Vebe Consistometer

Recommend UnitedTest Concrete Test Vebe Consistometer, consist of:

Vibrating table: Steel deck ~380 mm × 250 mm, minimum total mass ≥ 90 kg; sinusoidal vibration frequency 60 ± 2 Hz, double amplitude 0.43 ± 0.08 mm under 27 kg simulated load; must be anchored to prevent shifting during testing.

Cylindrical steel mold: Inner diameter 240 ± 2 mm, depth 200 ± 2 mm, wall thickness 6 ± 2 mm, with clamping brackets for rigid mounting to vibrating table.

Swivel arm + guide sleeve: Holds surcharge shaft vertically and allows free vertical sliding; can swing away from the mold for sample loading.

Surcharge assembly: Cylindrical steel mass with bottom plastic plate, vertical metal shaft, and circumferential spacing spacers. Two mass versions:

- Procedure A: 22.7 ± 0.5 kg (50 ± 1 lb)

- Procedure B: 12.5 ± 0.5 kg (27.5 ± 1 lb)

Spacers keep surcharge centered inside mold, radial clearance ≤ 0.5 mm, no jamming during vertical travel.

Tools

1. Weighing balance: readable to 5 g (0.01 lb) for mass measurement of mold plus concrete specimen.

2. Strike‑off plate: Flat rigid plate larger than mold diameter for surface trimming; 50‑mm (2‑in) test sieve conforming to ASTM E11; stopwatch reading to 1‑second resolution; hand tools (shovel, scoops, feeler gauges, etc.)

Key Test Parameters & Stipulations

Vibration frequency	60 ± 2 Hz (3600 ± 100 vibrations/min)
Double vibration amplitude	0.43 ± 0.08 mm under 27 kg load
Procedure‑A surcharge mass	22.7 ± 0.5 kg
Procedure‑B surcharge mass	12.5 ± 0.5 kg
Mold inner dimension	Φ240 ± 2 mm, height 200 ± 2 mm
Surcharge‑to‑mold radial clearance	≤ 0.5 mm
Weighing resolution	5 g
Timing resolution	1 s
Maximum permitted delay after mixing	45 min
Maximum aggregate size (original sample)	50 mm; oversized aggregates shall be removed by sieving

Standard Test Procedures of ASTM C1170 Vibrating Table Roller-Compacted Concrete Test

1. Calibrate mold internal volume; inspect and calibrate vibrating table, surcharge assembly and spacers.

2. Obtain fresh concrete sample complying with ASTM C172; wet‑sieve if oversize aggregates exist; ensure test starts within 45 min post‑mixing.

3. Secure cylindrical mold firmly onto anchored vibrating‑table fixture. Fill mold with fresh concrete specimen.

4. Swing surcharge assembly over mold center, lower weighted surcharge onto concrete surface.

5. Switch on vibration and start stopwatch. Record Vebe consistency time when full consolidation is completed.

6. Stop vibration, lift surcharge away, strike‑off specimen surface flush with mold top rim.

7. Weigh the mold plus consolidated concrete specimen, calculate specimen net mass.

8. Compute consolidated density by dividing specimen mass by calibrated mold volume.

9. Report selected procedure (A or B), Vebe time (seconds), density value, unit system (SI or inch‑pound) used.

Industrial & Engineering Application Fields

Primary application: Roller‑Compacted Concrete (RCC), especially for dams, pavements, heavy‑duty industrial slabs, transportation infrastructure. RCC is very dry, zero‑slump concrete compacted by roller compaction machinery on‑siteASTM Inter....

Secondary applicable materials: cement‑treated aggregates, soil‑cement‑like stabilized mixtures with stiff/no‑slump characteristics, both laboratory mixture development and field quality‑control testing.

Outputs (Vebe time and compacted density) support mixture proportioning, batch‑to‑batch consistency checking, construction‑quality verification for RCC projects.

Related Test Standard:

ASTM D1557	Modified‑effort laboratory soil compaction test
ASTM C143	Standard Test Method for Slump of Hydraulic-Cement Concrete
ASTM C1170	Standard Test Method for Determining Consistency and Density of Roller-Compacted Concrete Using a Vibrating Table
ASTM C1176	Standard Practice for Making Roller-Compacted Concrete in Cylinder Molds Using a Vibrating Table
EN 12350-3	Testing fresh concrete - Part 3: Vebe test

Importance of This Test for Fiber‑Reinforced‑Concrete Material

1. RCC is zero‑slump concrete; conventional slump test yields zero slump and cannot distinguish workability differences. ASTM C1170 provides a quantitative workability index (Vebe time) for mixture proportioning and QC monitoring.

2. Compacted density measured by this test correlates with on‑site roller‑compaction performance; target lab density helps predict field achievable density, which directly controls strength, permeability and durability of RCC structures (such as RCC dams).

3. Vebe time characterizes how easily the given RCC mixture consolidates under vibration‑plus‑weight; it guides mixture adjustments for cement content, water content, aggregate gradation.

4. Enables consistent comparison between laboratory trial mixtures and field production batches for quality assurance of stiff compacted‑concrete infrastructure.

Keywords: ASTM C1170 test machine, roller compacted concrete test, RCC vebe consistency test, vibrating table concrete density test, zero slump concrete test, vebe test apparatus, hardened concrete density measurement, concrete mix design testing, civil engineering concrete lab equipment, roller compacted concrete quality control, stiff concrete consistency test, concrete surcharge test, concrete laboratory testing instrument, ASTM C1170 test equipment, ASTM C1170 vibrating table, RCC Vebe consistometer, roller compacted concrete consistency density tester, Vebe test for zero‑slump concrete, UnitedTest concrete laboratory instruments.

Vebe Consistometer determines the consistency and density of low slump roller-compacted concrete. The sample is placed in the mold and the surcharge weight is placed on top. The vibrator is started and the time for the concrete to consolidate and form a mortar ring is recorded.

Fiber reinforced concrete (FRC) Flexural Testing Machine can according ASTM C1550 determines the flexural toughness of fiber-reinforced concrete. Flexural toughness is the maximum stress (put) onto a specimen before it cracks or breaks.

Q1: What is ASTM C1170 test used for? Why is this test important?

A1: ASTM C1170 measures Vebe consistency (workability) and consolidated density for zero‑slump, stiff‑to‑extremely‑dry roller‑compacted concrete (RCC) using a vibrating table plus surcharge weight. Standard slump test gives zero slump for RCC and cannot differentiate workability. Vebe time reflects how easily RCC can be compacted on‑site by rollers. The measured lab consolidated density correlates with field compaction performance, directly predicting RCC strength, permeability and long‑term durability for dams, pavements and heavy‑duty slabs. It supports mix proportioning, batch quality control and construction acceptance for RCC projects.

Q2: Why cannot I use conventional slump test for roller‑compacted concrete?

A2: Roller‑compacted concrete is zero‑slump material. The slump cone test only relies on gravity flow. All stiff RCC mixtures produce zero slump, so you cannot tell whether one RCC mix is easier or harder to compact than another. ASTM C1170 applies vibration plus static surcharge load to simulate roller compaction, and quantifies workability by Vebe consolidation time in seconds.

Q3: What is the difference between Procedure A and Procedure B in ASTM C1170? When do I pick each procedure?

A3: - Procedure A: 22.7 kg (50 lb) surcharge. Use for extremely‑dry consistency concrete, or when Procedure‑B Vebe time ≥ 30 s.

- Procedure B:12.5 kg (27.5 lb) surcharge. Use for stiff consistency concrete, when Vebe time ＜ 20 s.

- For very‑stiff consistency (Vebe time 20‑30 s), either Procedure A or B is acceptable.

Always report clearly which procedure you used in final test reports

Q4: What aggregate size limits apply for ASTM C1170 testing? What if my aggregate is larger than 50 mm (2 in)?

A4: Nominal maximum aggregate size ≤ 50 mm (2 in) for direct testing. If aggregate particles exceed 50 mm, perform wet‑sieving over 50‑mm sieve following ASTM C172, test only the passing fraction; discard over‑size aggregates before preparing test specimen.

Q5: How long after mixing should I finish ASTM C1170 test?

A5: Testing shall be completed within 45 minutes after mixing completion, unless project specification states other requirements. Fresh concrete properties change over time; delayed testing will give wrong Vebe time and density results.

Q6. What does ASTM C1170 actually measure?

A6: Two results:

Vebe consistency — the time in seconds required for a given mass of concrete to be consolidated by vibration in a cylindrical mold under a surcharge mass.

Density — mass of the consolidated specimen divided by the calibrated volume of the mold.

Q7. What does the surcharge assembly consist of?

A: A cylindrical steel mass with:

a circular plastic plate ≈ 13 mm thick, 230 ± 3 mm diameter (edge must not be chipped or rounded)

a metal shaft ≥ 450 mm long, 16 ± 2 mm diameter, sliding freely through the guide sleeve

at least six spacers around the circumference; spacer-to-mold clearance ≤ 0.5 mm, spacers must not bind

Total mass 22.7 ± 0.5 kg (A) or 12.5 ± 0.5 kg (B)

A swivel arm with guide sleeve holds the shaft perpendicular to the table, keeps the mass centered, and swings clear for filling.

Q8: What is Vebe consistency value? How to interpret test result?

A: Vebe consistency is the seconds of vibration time required for full consolidation of concrete specimen under surcharge mass. Longer Vebe time means drier, harder‑to‑compact concrete; shorter Vebe time means wetter, more workable mix. Combine Vebe time with consolidated density to judge whether the RCC mix meets project compaction requirements.

Q9: Why choose ASTM C1170 Vibrating Table Vebe Consistometer | Roller‑Compacted Concrete Tester from UnitedTest?

A: UnitedTest manufactures ASTM C1170 vibrating table test machine for roller‑compacted concrete. Measures Vebe consistency and consolidated density for stiff zero‑slump RCC, cement‑treated aggregate and soil‑cement mixtures. Complete set with 22.7 kg &12.5 kg surcharge assemblies, calibrated vibration parameters for civil engineering laboratory & site QC testing.

UnitedTest is a professional manufacturer of civil engineering and concrete laboratory testing instruments. Our ASTM C1170 Vebe Consistometer (Vibrating Table Test System) fully complies with ASTM C1170/C1170M‑14 standard test method for determining consistency and density of roller‑compacted concrete (RCC).

Roller‑compacted concrete is zero‑slump stiff concrete widely used for RCC dams, heavy‑duty pavements, industrial slabs and transportation infrastructure. Ordinary slump test cannot evaluate its workability. UnitedTest ASTM C1170 test equipment delivers reliable Vebe‑time and compacted density data for mix design, laboratory trial batches and on‑site quality control.

Key Machine Features

- Complies strictly with ASTM C1170/C1170M‑14: sinusoidal vibration frequency 60 Hz ±2 Hz, double amplitude 0.43 ± 0.08 mm under simulated test surcharge load.

- Complete dual‑surcharge set: 22.7 kg (Procedure A) and 12.5 kg (Procedure B) surcharge assemblies, with calibrated circumferential spacing spacers.

- Heavy‑duty steel cylindrical test mold (240 mm inner diameter ×200 mm depth), rigid clamping brackets for firm mounting on vibrating deck.

- Swivel guide‑sleeve arm: allows surcharge to swing away for specimen filling, keeps surcharge shaft vertical and free sliding during vibration.

- Robust total table‑vibrator mass ≥90 kg; pre‑drilled anchor holes for bolting onto concrete base to avoid displacement during testing.

- Supplied with stopwatch, strike‑off plate, 50 mm test sieve and auxiliary hand tools as required by ASTM C1170 standard.

- Suitable for lab testing and field‑sampled fresh RCC, cement‑treated aggregates, soil‑cement‑like stabilized mixtures.

What you can test with UnitedTest ASTM C1170 machine

✅ Measure Vebe consistency (workability) of stiff‑to‑extremely‑dry roller compacted concrete

✅ Calculate consolidated density of compacted fresh concrete specimen

✅ Lab RCC mix proportioning trials

✅ Batch‑to‑batch quality verification for RCC dam and pavement projects

✅ Test cement‑treated aggregate and soil‑cement stabilized materials

Why choose UnitedTest ASTM C1170 test machine

All units are pre‑calibrated before delivery. We provide technical guidance for ASTM C1170 test procedures, equipment calibration schedules and troubleshooting support. Our equipment helps civil labs, construction QC departments, material research institutes produce test results that meet ASTM C1170 reporting requirements for RCC construction projects worldwide.

We offer customization to meet your specific needs. Our expert team will collaborate with you to develop the perfect product for you