Lab ASTM Soil Multifunctional Compactor Electric Compaction Instrument

 Soil ASTM Multifunctional compactor

It is suitable for the foundation engineering construction such as water conservancy dam, traffic, railway, airport and building etc. With standard compaction method to determine the relationship between density and water ratio, then confirm the dry density and moisture content of soil.
It could satisfy the specimen preparation requirements of CBR tests and resilience modulus tests.
Product Description

Automatic Soils Compactor 

Complies to ASTM D558, ASTM D698, ASTM D1557, AASHTO T99, AASHTO T134, AASHTO T180 standards

The time and effort required to prepare specimens for compaction studies and other test methods can often be costly and time-consuming. The use of an automatic, mechanical compactor will show considerable cost benefits over hand compaction methods. 

These machines automatically compact specimens eliminating the laborious hand compaction method. The height and weight of the rammer are adjustable to suit test requirements.

An automatic blow pattern ensures optimum compaction for each layer of soil in compliance with the standards. The rammer travels across the mould and the table rotates the mould in equal steps on a base that is extremely stable. The number of blows per layer can be set at the beginning of the test. 

Preset blow pattern ensures an even compaction, includes solid state controls for reliability and maintenance. An automatic digital counter resets to zero on the completion of a test. The selectable rammer has a drop height of 300-450mm, a selectable rammer weight of 2.5 or 4-5kg. A preset number of blows per layer can be set by thumb wheel control. A compaction rate of approximately 26 blows per minute. Accepts BS Standard Compaction and CBR moulds; also meets the requirements of ASTM D558, ASTM D698, ASTM D1557, AASHTO T99, AASHTO T134, AASHTO T180.

 Proctor CBR (California Bearing Ratio) Soil Compactor is used for proctor compaction tests on soil samples, allowing for determining maximum dry density and optimum moisture content in geotechnical engineering according to standardized procedures. This process involves compacting soil samples in a standard mold under controlled conditions. This helps evaluate the mechanical strength of natural ground, subgrades, and base courses for pavement design, measuring the load-bearing capacity of soil when compacted to specific density and moisture content.

Newly upgraded model by using ECO-SMARTZ system for energy saving and consistency operation. Solid and compact design allows uniform and correct compaction of Proctor and CBR samples.

Features of Proctor CBR Soil Compactor

Controlled compaction of soil samples in a standard mold under controlled conditions, ensuring consistent results.

Perform Proctor compaction tests on soil samples to determine the maximum dry density and optimum moisture content.

Single version mechanism for most international standard

Pre-set blow system ensures even compaction

Solid state controls reliability & ease of maintenance

Separated control box unit protects against vibration damage

Standard

1. ASTM D558: This standard covers the determination of the moisture content of soil and rock by drying the material in an oven. It provides procedures for accurately measuring the moisture content, which is essential for understanding the behavior of soil and for compaction testing.

2. ASTM D698: This standard outlines the test method for determining the moisture-density relations of soils using a standardized compaction apparatus. It helps determine the maximum dry density and optimum moisture content of soils, crucial parameters for engineering applications such as road construction and foundation design.

3. AASHTO T99: This standard specifies the method for determining the moisture-density relations of soils using a standardized compaction apparatus. Similar to ASTM D698, it aims to determine the maximum dry density and optimum moisture content of soils for engineering purposes.

4. AASHTO T134: This standard covers the test method for the moisture content of soils by using calcium carbide gas pressure moisture testers. It provides procedures for rapid and accurate determination of the moisture content, which is vital for assessing soil properties and compaction characteristics.

5. AASHTO T180: This standard outlines the test method for determining the moisture-density relations of soils using a standardized compaction apparatus. Like ASTM D698 and AASHTO T99, it focuses on determining the maximum dry density and optimum moisture content of soils to ensure proper compaction and stability in construction projects.

Test Procedure of Proctor CBR Soil Compactors

1. Sample Preparation:

   • Collect representative soil samples from the site.
   • Air-dry the samples and break up any aggregates.
   • Sieve the soil to remove any large particles or debris.

2. Determination of Moisture Content:

   • Take a portion of the prepared soil sample and determine its initial moisture content using an appropriate method, such as ASTM D558 or AASHTO T134.

3. Compaction Test:

   • Set up the Proctor/CBR Soil Compactor according to the manufacturer's instructions and calibrate it if necessary.
   • Place a specified amount of soil into a standard compaction mold (usually a cylindrical mold with known dimensions).
   • Determine the compaction effort required based on the type of Proctor test being conducted (Standard Proctor or Modified Proctor).
   • Compact the soil in layers by applying a specified number of blows from the compaction hammer. The blows are evenly distributed over the surface of each layer.
   • Measure and record the height of each compacted layer.
   • Repeat the compaction process for additional soil samples at varying moisture contents.

4. Determination of Dry Density:

   • After compacting all the samples, carefully extract them from the molds.
   • Determine the dry weight of each compacted sample by oven-drying them to remove all moisture (ASTM D558 or AASHTO T134).
   • Calculate the dry density (bulk density) of each sample using the known volume of the mold and the dry weight of the soil.

5. Plotting the Compaction Curve:

   • Plot a graph of dry density versus moisture content for the tested soil samples.
   • Identify the maximum dry density and the corresponding optimum moisture content from the curve.

6. Interpretation:

   • Evaluate the results to determine the suitability of the soil for engineering applications, such as road construction or foundation design.
   • The maximum dry density and optimum moisture content provide crucial information for achieving the desired level of compaction in the field.