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HEAVY COMPACTION TEST AZA0865
The AZA0865 Heavy Compaction Test Apparatus from Azalab is designed for performing the Heavy Compaction Test, commonly known as the Modified Proctor Compaction Test. This test establishes the relationship between moisture content and dry density of soils under high compaction energy, simulating field conditions achieved by modern heavy compaction equipment.
The apparatus is essential for determining Maximum Dry Density (MDD) and Optimum Moisture Content (OMC) for soils used in heavy-duty pavements, airfield runways, embankments, dams, and foundations, where higher strength and durability are required.
Purpose of Test
The Modified Proctor Test applies significantly greater compactive effort compared to the Standard Proctor test. The results are used by engineers to:
-
- Specify target field compaction densities
- Control moisture during earthwork
- Ensure long-term stability and load-bearing performance
Description
Description
Main Components
1. Heavy Compaction Mould
- Cylindrical steel mould with detachable collar and base plate
- Designed to hold a larger soil volume for heavy compaction
2. Heavy Compaction Rammer (Hammer)
- Precisely machined hammer with specified weight and drop height
- Delivers standardized high compaction energy
3. Accessories (Optional)
- Sample extruder
- Mixing pan and preparation tools
Test Procedure Summary
- Soil is compacted at different moisture contents
- Compaction is carried out in five layers, each receiving a fixed number of blows
- Wet density is determined after compaction
- Moisture content is measured
- A compaction curve is plotted to determine MDD and OMC
Standards Compliance
- ASTM D1557 – Modified Effort Compaction Test
- IS 2720 (Part VIII) – Heavy Compaction Method
- BS 1377‑4 – Compaction-related Tests
Specifications
| Parameter | Specification |
|---|---|
| Model Number | AZA0865 |
| Test Method | Heavy / Modified Proctor Compaction |
| Compaction Effort | Modified / Heavy |
| Application | Roads, airfields, embankments, dams |
Compaction Mould – ASTM Type
- Internal Diameter: 152.4 mm (6 in)
- Effective Height: 116.4 mm
- Volume: ~2124 cm³
Compaction Mould – IS Type (Optional)
- Internal Diameter: 150 mm
- Height: 127.3 mm
- Volume: 2250 cm³
Heavy Compaction Rammer
- ASTM D1557: 4.54 kg, 457.2 mm drop, 50.8 mm face
- IS 2720 Part VIII: 4.9 kg, 450 mm drop, 50 mm face
Construction
- Heavy-duty steel, corrosion-resistant finish
Applications
- Highway and pavement construction
- Airfield runway design
- Earth dams and embankments
- Foundation and subgrade evaluation
- Geotechnical and civil engineering laboratories
What’s Included
- Heavy compaction mould with collar and base plate
- Heavy compaction rammer
- User manual
Frequently Asked Questions (FAQ)
Q1: What does the AZA0865 test determine?
It determines the maximum dry density and optimum moisture content under heavy compaction effort.
Q2: How is it different from the Standard Compaction Test?
It uses a heavier hammer, higher drop height, and more layers, resulting in higher compaction energy.
Q3: Which projects require Modified Proctor testing?
Airfields, heavy-duty pavements, dams, and high-load foundations.
Q4: Does it comply with international standards?
Yes. ASTM D1557, IS 2720 (Part VIII), and BS 1377‑4.
Q5: Is automation available?
This is a manual system. Automatic compactors are available separately.
Key Benefits
- Accurate determination of MDD and OMC under heavy compaction
- Essential for high-performance earthworks
- Robust construction for long-term lab use
- Fully standards compliant
- Trusted Azalab quality
Additional information
Additional information
| Model Number |
AZA 0865 |
|---|---|
| Test Method |
Heavy Compaction Test (Modified Proctor Compaction Test) |
| Purpose |
To determine the Maximum Dry Density (MDD) and Optimum Moisture Content (OMC) of soils under heavy compaction effort. |
| Material |
Heavy-duty steel |
Related products
AUTOMATIC SOIL COMPACTOR AZA0867
The AZA0867 Automatic Soil Compactor from Azalab is a precision-engineered laboratory machine designed to perform Standard Proctor and Modified Proctor compaction tests with high repeatability and minimal operator dependency. The system mechanizes the hammer lifting and dropping process, ensuring consistent compaction energy in strict accordance with international standards.
This apparatus is essential for geotechnical laboratories involved in road construction, airfield pavements, embankments, earth dams, and foundation engineering, where accurate determination of Maximum Dry Density (MDD) and Optimum Moisture Content (OMC) is critical for quality control and design validation.
LIQUID LIMIT DEVICE (MOTORISED) AZA0854
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The AZA0854 is fully compliant with IS 2720 (Part 5) and ASTM D4318, making it suitable for soil classification, road and pavement design, foundation investigations, and routine geotechnical laboratory testing. The unit operates on 230V AC, 50 Hz, single-phase, ensuring compatibility with standard laboratory power supplies.
The system is supplied complete with Casagrande and ASTM grooving tools and a 1 cm height calibration block, enabling immediate setup, verification, and testing.
MOTORISED SAND EQUIVALENT SHAKER AZA0861
The AZA0861 Motorised Sand Equivalent Shaker is a precision-engineered laboratory instrument designed to automate the agitation phase of the Sand Equivalent Test. It ensures uniform, repeatable shaking in full compliance with ASTM D2419, AASHTO T176, and IS 2720 (Part 37), eliminating operator variability associated with manual shaking.
This shaker is an essential accessory for soil, aggregate, and construction material testing laboratories where accurate assessment of sand cleanliness and clay-like fines is critical.
Purpose & Function
The Sand Equivalent Test evaluates the relative proportion of sand versus clay-sized or plastic fines in fine aggregates. During testing, the sample and calcium chloride solution must be agitated for a defined stroke length and rate.
The AZA0861 automates this process using a controlled reciprocating motion, delivering consistent agitation that improves repeatability, reduces operator fatigue, and enhances overall test reliability.
PARTICLE SIZE SEDIMENTATION (HYDROMETER METHOD) AZA0857
AZA0857 – Particle Size Sedimentation Apparatus (Hydrometer Method)
The AZA0857 Particle Size Sedimentation Apparatus (Hydrometer Method) from AZA Lab is designed for determining the particle size distribution of fine-grained soils, particularly silts and clays smaller than 75 microns. This method is widely adopted in soil mechanics, geotechnical engineering, civil construction quality control, and academic laboratories where accurate characterization of cohesive soils is essential.
The hydrometer method is based on the sedimentation principle governed by Stokes’ Law, measuring changes in the density of a soil–water suspension over time. By recording hydrometer readings at defined intervals, the percentage of soil particles remaining in suspension is calculated, enabling precise determination of grain size distribution for fine soils beyond the practical limits of sieve analysis.
PLUMMET BALANCE AZA0862
The AZA0862 Plummet Balance is a specialized laboratory apparatus designed for determining the specific gravity of fine-grained soils, particularly clays and silts that are difficult to test using conventional pycnometer methods. It is widely used in geotechnical engineering, soil mechanics laboratories, and construction quality control applications.
Manufactured by Azalab, the instrument complies with ASTM D854 and IS 2720 (Part 3 / Sec 1) standards and provides rapid, repeatable, and reliable results for dispersed soil samples commonly used in sedimentation, pipette, and hydrometer analyses.
Working Principle
The plummet balance method determines the specific gravity of soil solids by measuring the apparent weight of a suspended plummet immersed in a soil–water suspension. The balance pointer directly indicates the percentage of soil in suspension via a calibrated scale, eliminating lengthy calculations.
A rack-and-pinion height adjustment allows the plummet to be positioned at the required depth. The percentage of soil in suspension is read directly from the graduated scale, making this method faster and more user-friendly than traditional sedimentation calculations.
The set is supplied with a temperature correction chart relating the constant K to suspension temperature for soils with specific gravity ranging from 2.4 to 2.8, facilitating accurate application of Stokes’ law.
PROCTOR NEEDLES (SPRING TYPE) AZA0868
The AZA0868 Precision Proctor Needles (Spring Type) from Azalab are designed for rapid, on-site estimation of soil compaction and moisture condition. This portable instrument provides a practical alternative to full laboratory Proctor testing for preliminary assessment and quality control, particularly on cohesive and semi-cohesive soils encountered in embankments, subgrades, and trench backfills.
The instrument employs a calibrated, spring-loaded plunger to measure penetration resistance directly (0–40 kg range). Two graduated stems allow accurate tracking of penetration depth, while a comprehensive set of interchangeable needle tips enables testing across a range of soil densities and particle characteristics.
Applications
- Field assessment of soil compaction
- Estimation of optimum moisture condition
- Subgrade, fill, and trench inspection
- Construction quality control checks
- Geotechnical and educational field investigations
SHRINKAGE LIMIT SET AZA0849
The AZA0849 Shrinkage Limit Set from AZALAB is a precision-engineered laboratory instrument used for determining the shrinkage limit of cohesive soils, a critical parameter within the Atterberg limits framework. This test plays a vital role in understanding the volume change characteristics of fine-grained soils when subjected to drying.
The shrinkage limit represents the maximum moisture content at which further reduction in water content does not cause any appreciable decrease in soil volume. Beyond this point, air begins to enter the soil voids, and the soil mass maintains a constant volume. Accurate determination of this parameter is essential for predicting soil behavior in foundations, embankments, earth dams, and pavement structures.
Standards Compliance
The AZA0849 Shrinkage Limit Set conforms to major national and international testing standards, ensuring reliable and universally accepted test results:- IS 2720 (Part VII)
- ASTM D427
- BS 1377
- AASHTO T 92
STANDARD COMPACTION TEST AZA0863
The AZA0863 Standard Compaction Test Apparatus from Azalab is designed to perform the Standard Proctor Compaction Test, a fundamental geotechnical laboratory procedure used to determine the Maximum Dry Density (MDD) and Optimum Moisture Content (OMC) of soils. These parameters are essential for ensuring proper soil compaction in the construction of roads, embankments, foundations, and other earth structures.
This apparatus simulates light compaction effort typically applied in the field and provides reliable, repeatable results for laboratory quality control and design verification.
Purpose & Principle
The Standard Compaction Test establishes the relationship between soil moisture content and dry density under a standard compactive effort. Soil samples are compacted in layers within a cylindrical mould using a specified hammer weight and drop height. By testing at varying moisture contents and plotting a compaction curve, the MDD and OMC are obtained.