Free swell index test pdf

Free swell index test pdf
6. DETERMINATION OF FREE SWELL INDEX OF SOILS STANDARD IS: 2720 (Part 40) 1977. DEFINITION Free Swell Index is the increase in volume of a soil, without any external
test program for swelling or expansive soils There is a small group of soils which can display the characteristics of objectionable volumetric expansion after being compacted and subjected to subsequent saturation.
advisable to use a standard test liquid, such as described in 6.1.1 and 6.1.2, covering the range of properties that may be encountered in the particular service.
The swell index test results reveal differences between the various bentonites as shown in Table 4. The natural calcium bentonites swell indices were lower than 10 cm 3 /2 g whereas the swell indexes for the sodium-activated calcium bentonites and the natural sodium bentonites were higher than 29 cm 3 /2 g.

done in order to test the accuracy of the several neuronet topologies in predicting the desired outputs as shown in Table 4. The selection strategy of the various parameters from the input parameter list is by assuming that they are most influential to swelling pressure. The parameters such as Grain size, Atterberg’s limits are most influential whereas Differential Free swell and Activity
Conclusions The shrink swell test is a simple and economical laboratory test that is performed on undisturbed clay soil samples to yield a reactivity index that enables free surface ground movements to be predicted. It has been employed in routine geotechnical practice in Australia for the past 20 years, and during that period, it is considered to have served the Australian geotechnical
Effects of Textile Effluent on the Differential Free Swell Index of Expansive Soil – Free download as PDF File (.pdf), Text File (.txt) or read online for free. The rapid growth in population and industrialization cause generation of large quantities of effluents. The bulkeffluents generated from industrial activities are discharged either
03 Determination of Differential Free Swell Index – Download as PDF File (.pdf), Text File (.txt) or read online. a
The shrink–swell capacity of clay refers to the extent certain clay minerals will expand when wet and retract when dry. Soil with a high shrink–swell capacity is problematic and is known as shrink–swell soil, or expansive soil.
The shrink swell test is a simple test that is routinely employed in Australian geotechnical engineering practice to assess quantita- tiv ely the expansiv e potential of undisturbed or remolded
301.4 Free Swell Index Test 301.5 Deleterious Content (Organic Matter) 301.6 Deleterious Content (Soluble Sulphate) B Construction & Workmanship 301.7 (a) Water Content of Soil – Oven Drying Method (Standard Method) 301.7 (b) Sand Bath Method (Subsidiary Method) 301.7 (c) Alcohol Method (Subsidiary Method) QUALITY ASSURANCE HANDBOOK FOR RURAL ROADS VOLUME II …

Effects of Textile Effluent on the Differential Free Swell




STABILIZATION OF CLAYEY SOIL USING POLYPROPYLENE FIBER

1 Alpha Test House M‐577, Guru Harkrishan Nagar, Plasticity Index Free Swell Index Specific Gravity Shrinkage Limit Light Compaction (MDD & OMC) Heavy Compaction (MDD & OMC) CBR Direct Shear Test Unconfined Compression (without pore
method of test for swell of bituminous mixtures CAUTION: Prior to handling test materials, performing equipment setups, and/or conducting this method, testers are required to read “SAFETY AND HEALTH ” in Section I of this method.
The UBC index test does not attempt to replicate any particular moisture or loading conditions that actually exist in the field, it is simply a relative index of swell potential.
While the restricted swell test slightly underestimated swell pressure, swell-consolidation and zero swell tests overestimated it. The double oedometer test did not provide swell pressures correlatable with those found using the direct method. Free swell data correlated reasonably well with swell pressure data from the direct method, so an empirical form was established from which swell
Based on experimental study on swelling percent and pressure of compacted clays, artificial neural networks were utilized in order to predict free-swell percent and swelling pressure from clay size fraction, liquid limit, plasticity index, void ratio and degree of saturation.
To predict free swelling potential and pressure, the multiple regression analyses were performed for the different values of dry unit weight, initial water content and plasticity index of three samples. The proposed relationships and the equations in the literature were compared with the test results of these samples in optimum water content and maximum dry unit weight and of another compacted
Free swell and swelling pressure tests have also been performed with this solutions and with a series of KCI and CaCl 2 solutions with a concentration varying from 0.001 M to 1 M. The overlapped samples were analysed in large scale laboratory permeameters at different effective stresses. In addition, swelling pressure tests on single sheet samples were conducted to analyse the swelling


The shrink-swell test consists of axial swell strain obtained from one dimensional In soil physics, the soil suction is referred to as consolidation test and axial shrinkage strain obtained the potential energy state of water in the soil (Jury et from an unrestrained core shrinkage test (AS1289, al., 1991). Therefore, the soil suction and Hs depend 1992). Then the total vertical strain can be
Designation: D 4318 – 00 Standard Test Methods for Liquid Limit, Plastic Limit, and Plasticity Index of Soils1 This standard is issued under the fixed designation D 4318; the number immediately following the designation indicates the year of
• coal having mean reflectance of more than 0.60 and swelling Index or CSN of 1 and above ( Indian Gov ) • Coking coals are those coals that soften, swell and then solidify as they are
free swell test A comparative study of these methods was done bySridharan & Prakash (2000). According to that study, Free Swell Ratio (FSR) method is a very competitive method, involving very simple procedure, for the prediction of swell potential of a soil. This method overcomes the limitation of free swell index method (IS 2720, 1977), which gives negative free swell indices for kaolinite
• Free swell of clay particles This test tries to give a fair approximation of the degree of expansiveness of a given soil sample. Test Procedure Pouring very slowly 10cc of dry soil passing No. 40 sieve into 100cc of distilled water Letting the content stand for about 24 hrs until all the sample completely settles on the bottom of the cylinder. Record the final volume of the sample
This test measures the free swelling of a disturbed soil (i.e. ground and sieved finer than 0.425 mm) on wetting from air-dry to saturation. The swell is calculated on a volumetric basis
a Department of Civil Engineering, Indian Institute of Technology Bombay, Mumbai-400076, India. Expansive soils exhibit significantly high volumetric deformations and hence, pose a serious threat to stability of structures and foundations. As such, determination of their swelling properties (viz


The test results indicate that, the free swell index linear variation with the non swelling residual soil. The time-swell response of soils follow rectangular hyperbola relationship.
The Free Swell Index test has been conducted on soil sample with the addition of 0%, 0.5%, 1% and 1.5% of fibre content. From the graph (chart – 1), it is seen that, the free swell index
Sample kept for free swell index Allow the samples to settle in both the cylinders. Record the individual and the mean results to the nearest second decimal. Sufficient time.
Plasticity Index and high Free Swell Index in contrast to non-expansive soils characterize potentially expansive soils. The exact numeric range of each of the soil properties namely Liquid Limit, Plasticity Index,
Existing Methods for Swelling Tests Free swelling test and oedometric test with dead load A potential problem of free swelling tests is that the specimens can disintegrate, leading to questionable measurements. Furthermore, measuring the radial deformation with a metal band (Fig. 5b) is useless. Usually all deformation measurements of an apparatus should have the same order of accuracy. In
The free swell index test discussed in this paper involves a very simple, user-friendly testing procedure, requiring negligible instrumental sophistication. The test results in the form of free swell ratio proposed can be used to obtain quite reliable information about the …
parameters like free swell index (FSI), swell potential, swelling pressure, plasticity, compaction, strength and hydraulic conductivity of expansive soil was studied. The ash blended expansive soil with FLY ASH contents of
V 303.3 Proctor Density 303.4 Free Swell Index 303.5 Deleterious Content (Organic Matter) 303.6 Deleterious Content (Soluble Sulphate) 303.7 CBR of Remoulded and Soaked Samples
Given the low seating pressure (1.5 kPa) in the free swelling test and the no applied load in the swell-shrink test, results from the two tests can be used in conjunction. Specifically, the swelling potential and swelling pressure can be determined for any initial degree of saturation using a graphical procedure.



Swell index oedopermeametric filter press and rheometric

1.1 This test method 2 is a small-scale test for obtaining information regarding the free-swelling properties of a coal. The results may be used as an indication of the caking characteristic of the coal when burned as a fuel.
swelling percent using CBR-instrument as well as free swelling of the studied soil were measured before and after the treatment. An optimum lime content to treat the studied clayey silt was 5% according to pH -test.
Soil Shrinkage Characteristics in Swelling Soils 471 The objectives of this presentation are to: • understand soil swelling and shrinkage mechanisms, and the development of
The Free Swell Index (FSI) test is not a common laboratory experiment for the determination of volume change potential of a clay soil and a standard pr ocedure does not exist for this test. Ho

Test Program for Swelling or Expansive Soils tpub.com

Crucible swelling index (free swelling index) The simplest test to evaluate whether a coal is suitable for production of coke is the free swelling index test. This involves heating a small sample of coal in a standardised crucible to around 800 degrees Celsius (1500 °F).
5.1 The wetting-induced swell/collapse strains measured from Test Methods A and B can be used to develop estimates of heave or settlement of a confined soil profile (1 and 2). 4 They can also be used to estimate the magnitudes of the swell pressure and the free swell strain.
vi Modified Free swell index (MFSI) and swell potential of the mixtures were assessed. The correlations between the swelling behavior of test samples and fundamental
between Free Swell Index and Clay Percentage in the soil is tried. The plot of the same is shown in Fig. 3. The points lie in a conical band having the vertex on clay axis at about 15% value. It is clear from the graph that with increase in clay percentage, the free swell index also increases. The clay minerals Montmorillonite, Kaolinite, Ellite etc, exhibit different swelling characteristics
To evaluate the free swell potential of the untreated and lime-treated soil samples, a free swell test was performed using the standard one-dimensional oedometer …
One test per source – R A 2) Free swell Index Lab test MORTH Clause No.305.2 Less than 50 % – R A 3) Liquid limit Lab test MORTH Clause No.305.2 & Quality Control notebook. Not more than 70 % One test
the swelling properties of the soil within 24 hours of the start of testing. Traditional free-swell testing to achieve Traditional free-swell testing to achieve the same level of characterization required approximately 30 days for the highly plastic clay evaluated in the
Test results indicate that properties of BC soil, which are important for pavement construction, get enhanced by bio enzyme stabilization. Keywords – Bio enzyme, CBR, Durability test, Free swell index, Permeability, UCS.
The physical index properties of the soil sample were determined and the results are summarized in Table 1. Based on the free swell index tests conducted on the soil sample, the soil can be

ESTABLISHING RELATIONSHIP BETWEEN SWELLING PRESSURE


Standard Test Method for Rubber Property—Effect of Liquids1



The caking index is modified from Roga index by changing the particle size of standard anthracites sample from 0.1 to 0.2 mm, and reducing the tumbling test numbers from 3 times to Coal
The SNF furnace is designed to test the swelling index number of coal in accordance with the following standard test methods. BS 1016-107.1:1991 Methods for analysis and testing of coal and coke.
Free Swell Index is the increase in volume of a soil, without any external constraints, on submergence in water. APPARATUS 425 micron IS sieve. Graduated glass cylinders 100 ml capacity 2Nos (IS: 878 -1956). Glass rod for stirring. Balance of capacity 500grams and sensitivity 0.01 gram. PROCEDURE Take two representative oven dried soil samples each of 10 grams passing through 425 micron sieve
SOIL MODEL w wSW ∆V/V wSH 0 γw/γd Shrink-Swell Index 1 Free Swell Test Free Shrink Test ∆ W max UNSAT. S A T U R A T E D (∆V/V)max J.L. Briaud –Texas A&M University.
5.4.1 Method A—This test method measures ( a) the free swell, (b) percent heave for vertical confining pressures up to the swell pressure, and (c) the swell pressure.
suitable for production of coke is the free swelling index test. It involves heating a small sample of coal in a standardized crucible to around 800 degrees Celsius (1500 °F). The free swelling index in British Standards Index (BSI) nomenclature (the crucible swelling index number (CSN) in ISO nomenclature) is a measure of increase in the volume of coal when heated, with the exclusion of air
Free Swell Index 10 Consolidation 11-12 Specific Gravity 13 Average of at least two specimen test results i.e. one from top and the other from bottom of the sample should be reported. OBSERVATION AND CALCULATION Determination No. I II Container No. Top Bottom Wt. of container + wet soil W 1 g 202.00 Wt. of container + oven dry soil, W 2 g 181.90 Wt. of container W 3 g 96.26 Wt. of water
6/02/2011 · The soil samples, kerosene being a non-polar liquid does not cause swelling of the soil. The level of the soil in the distilled water cylinder shall be read as the free swell level. The free swell index of the soil shall be calculated as follows:

(PDF) The Shrink Swell Test Share and discover research


ESTIMATION OFCOALSWELLINGINDEX BASED ON CHEMICAL

The free swell index test should be performed in accordance with IS 2720(Part 41):1977. If the free swell index of a soil is more than 100, the soil may be expansive. If the free swell index is lower than 100, the soil may be treated as non-expansive.
@inproceedings{398296, abstract = {Exposure to liquids with high electrolyte concentrations or high cation valence present in landfill leachates can cause significant increases in hydraulic conductivity of clays due to a reduction in the thickness of the double layer.
eb 15-025 page 1 of 16 geotechnical test method: test method for liquid limit, plastic limit, and plasticity index gtm-7 revision #2 state of new york
Expansion Index Test (ASTM D4829-11) • A soil specimen is remolded into a standard 102 mm (4.01 in) diameter, 24.5 mm (1 in) tall ring at a degree of saturation of about

(PDF) Some relationships between shrink-swell index

Free Swell Index: The determination of free swell index also known as differential free swell of soil helps to identify the potential of a soil to swell which might need further detailed investigation regarding swelling …

wSW max Index 1 ceprofs.civil.tamu.edu

SWELL AND SWELLING POTENTIAL PRESSURE TEST

Classification procedures for expansive soils


Free-Swell and Swelling Pressure of Unsaturated Compacted

Swelling Pressure of Soil using a Predictive Tool

ESTABLISHING RELATIONSHIP BETWEEN SWELLING PRESSURE
Final List Of Labs iitk.ac.in

eb 15-025 page 1 of 16 geotechnical test method: test method for liquid limit, plastic limit, and plasticity index gtm-7 revision #2 state of new york
vi Modified Free swell index (MFSI) and swell potential of the mixtures were assessed. The correlations between the swelling behavior of test samples and fundamental
The SNF furnace is designed to test the swelling index number of coal in accordance with the following standard test methods. BS 1016-107.1:1991 Methods for analysis and testing of coal and coke.
The caking index is modified from Roga index by changing the particle size of standard anthracites sample from 0.1 to 0.2 mm, and reducing the tumbling test numbers from 3 times to Coal
301.4 Free Swell Index Test 301.5 Deleterious Content (Organic Matter) 301.6 Deleterious Content (Soluble Sulphate) B Construction & Workmanship 301.7 (a) Water Content of Soil – Oven Drying Method (Standard Method) 301.7 (b) Sand Bath Method (Subsidiary Method) 301.7 (c) Alcohol Method (Subsidiary Method) QUALITY ASSURANCE HANDBOOK FOR RURAL ROADS VOLUME II …
6/02/2011 · The soil samples, kerosene being a non-polar liquid does not cause swelling of the soil. The level of the soil in the distilled water cylinder shall be read as the free swell level. The free swell index of the soil shall be calculated as follows:
swelling percent using CBR-instrument as well as free swelling of the studied soil were measured before and after the treatment. An optimum lime content to treat the studied clayey silt was 5% according to pH -test.
The free swell index test discussed in this paper involves a very simple, user-friendly testing procedure, requiring negligible instrumental sophistication. The test results in the form of free swell ratio proposed can be used to obtain quite reliable information about the …
Effects of Textile Effluent on the Differential Free Swell Index of Expansive Soil – Free download as PDF File (.pdf), Text File (.txt) or read online for free. The rapid growth in population and industrialization cause generation of large quantities of effluents. The bulkeffluents generated from industrial activities are discharged either
Sample kept for free swell index Allow the samples to settle in both the cylinders. Record the individual and the mean results to the nearest second decimal. Sufficient time.

Soil Volume Expansion Test NSW Environment & Heritage
(PDF) Classification procedures for expansive soils

@inproceedings{398296, abstract = {Exposure to liquids with high electrolyte concentrations or high cation valence present in landfill leachates can cause significant increases in hydraulic conductivity of clays due to a reduction in the thickness of the double layer.
5.4.1 Method A—This test method measures ( a) the free swell, (b) percent heave for vertical confining pressures up to the swell pressure, and (c) the swell pressure.
Free Swell Index: The determination of free swell index also known as differential free swell of soil helps to identify the potential of a soil to swell which might need further detailed investigation regarding swelling …
5.1 The wetting-induced swell/collapse strains measured from Test Methods A and B can be used to develop estimates of heave or settlement of a confined soil profile (1 and 2). 4 They can also be used to estimate the magnitudes of the swell pressure and the free swell strain.
Designation: D 4318 – 00 Standard Test Methods for Liquid Limit, Plastic Limit, and Plasticity Index of Soils1 This standard is issued under the fixed designation D 4318; the number immediately following the designation indicates the year of
Given the low seating pressure (1.5 kPa) in the free swelling test and the no applied load in the swell-shrink test, results from the two tests can be used in conjunction. Specifically, the swelling potential and swelling pressure can be determined for any initial degree of saturation using a graphical procedure.
between Free Swell Index and Clay Percentage in the soil is tried. The plot of the same is shown in Fig. 3. The points lie in a conical band having the vertex on clay axis at about 15% value. It is clear from the graph that with increase in clay percentage, the free swell index also increases. The clay minerals Montmorillonite, Kaolinite, Ellite etc, exhibit different swelling characteristics
The SNF furnace is designed to test the swelling index number of coal in accordance with the following standard test methods. BS 1016-107.1:1991 Methods for analysis and testing of coal and coke.

(PDF) Classification procedures for expansive soils
(PDF) Some relationships between shrink-swell index

method of test for swell of bituminous mixtures CAUTION: Prior to handling test materials, performing equipment setups, and/or conducting this method, testers are required to read “SAFETY AND HEALTH ” in Section I of this method.
The shrink-swell test consists of axial swell strain obtained from one dimensional In soil physics, the soil suction is referred to as consolidation test and axial shrinkage strain obtained the potential energy state of water in the soil (Jury et from an unrestrained core shrinkage test (AS1289, al., 1991). Therefore, the soil suction and Hs depend 1992). Then the total vertical strain can be
parameters like free swell index (FSI), swell potential, swelling pressure, plasticity, compaction, strength and hydraulic conductivity of expansive soil was studied. The ash blended expansive soil with FLY ASH contents of
5.4.1 Method A—This test method measures ( a) the free swell, (b) percent heave for vertical confining pressures up to the swell pressure, and (c) the swell pressure.
Designation: D 4318 – 00 Standard Test Methods for Liquid Limit, Plastic Limit, and Plasticity Index of Soils1 This standard is issued under the fixed designation D 4318; the number immediately following the designation indicates the year of
the swelling properties of the soil within 24 hours of the start of testing. Traditional free-swell testing to achieve Traditional free-swell testing to achieve the same level of characterization required approximately 30 days for the highly plastic clay evaluated in the
The Free Swell Index test has been conducted on soil sample with the addition of 0%, 0.5%, 1% and 1.5% of fibre content. From the graph (chart – 1), it is seen that, the free swell index
test program for swelling or expansive soils There is a small group of soils which can display the characteristics of objectionable volumetric expansion after being compacted and subjected to subsequent saturation.
• Free swell of clay particles This test tries to give a fair approximation of the degree of expansiveness of a given soil sample. Test Procedure Pouring very slowly 10cc of dry soil passing No. 40 sieve into 100cc of distilled water Letting the content stand for about 24 hrs until all the sample completely settles on the bottom of the cylinder. Record the final volume of the sample
Free Swell Index 10 Consolidation 11-12 Specific Gravity 13 Average of at least two specimen test results i.e. one from top and the other from bottom of the sample should be reported. OBSERVATION AND CALCULATION Determination No. I II Container No. Top Bottom Wt. of container wet soil W 1 g 202.00 Wt. of container oven dry soil, W 2 g 181.90 Wt. of container W 3 g 96.26 Wt. of water
advisable to use a standard test liquid, such as described in 6.1.1 and 6.1.2, covering the range of properties that may be encountered in the particular service.
free swell test A comparative study of these methods was done bySridharan & Prakash (2000). According to that study, Free Swell Ratio (FSR) method is a very competitive method, involving very simple procedure, for the prediction of swell potential of a soil. This method overcomes the limitation of free swell index method (IS 2720, 1977), which gives negative free swell indices for kaolinite
• coal having mean reflectance of more than 0.60 and swelling Index or CSN of 1 and above ( Indian Gov ) • Coking coals are those coals that soften, swell and then solidify as they are
The UBC index test does not attempt to replicate any particular moisture or loading conditions that actually exist in the field, it is simply a relative index of swell potential.

Determination of Swelling and Shrinkage Properties of
The Shrink Swell Test [PDF Document]

This test measures the free swelling of a disturbed soil (i.e. ground and sieved finer than 0.425 mm) on wetting from air-dry to saturation. The swell is calculated on a volumetric basis
free swell test A comparative study of these methods was done bySridharan & Prakash (2000). According to that study, Free Swell Ratio (FSR) method is a very competitive method, involving very simple procedure, for the prediction of swell potential of a soil. This method overcomes the limitation of free swell index method (IS 2720, 1977), which gives negative free swell indices for kaolinite
To evaluate the free swell potential of the untreated and lime-treated soil samples, a free swell test was performed using the standard one-dimensional oedometer …
The shrink–swell capacity of clay refers to the extent certain clay minerals will expand when wet and retract when dry. Soil with a high shrink–swell capacity is problematic and is known as shrink–swell soil, or expansive soil.
The Free Swell Index test has been conducted on soil sample with the addition of 0%, 0.5%, 1% and 1.5% of fibre content. From the graph (chart – 1), it is seen that, the free swell index
Conclusions The shrink swell test is a simple and economical laboratory test that is performed on undisturbed clay soil samples to yield a reactivity index that enables free surface ground movements to be predicted. It has been employed in routine geotechnical practice in Australia for the past 20 years, and during that period, it is considered to have served the Australian geotechnical
Existing Methods for Swelling Tests Free swelling test and oedometric test with dead load A potential problem of free swelling tests is that the specimens can disintegrate, leading to questionable measurements. Furthermore, measuring the radial deformation with a metal band (Fig. 5b) is useless. Usually all deformation measurements of an apparatus should have the same order of accuracy. In
The shrink-swell test consists of axial swell strain obtained from one dimensional In soil physics, the soil suction is referred to as consolidation test and axial shrinkage strain obtained the potential energy state of water in the soil (Jury et from an unrestrained core shrinkage test (AS1289, al., 1991). Therefore, the soil suction and Hs depend 1992). Then the total vertical strain can be
The free swell index test should be performed in accordance with IS 2720(Part 41):1977. If the free swell index of a soil is more than 100, the soil may be expansive. If the free swell index is lower than 100, the soil may be treated as non-expansive.
Sample kept for free swell index Allow the samples to settle in both the cylinders. Record the individual and the mean results to the nearest second decimal. Sufficient time.
Soil Shrinkage Characteristics in Swelling Soils 471 The objectives of this presentation are to: • understand soil swelling and shrinkage mechanisms, and the development of
method of test for swell of bituminous mixtures CAUTION: Prior to handling test materials, performing equipment setups, and/or conducting this method, testers are required to read “SAFETY AND HEALTH ” in Section I of this method.
5.4.1 Method A—This test method measures ( a) the free swell, (b) percent heave for vertical confining pressures up to the swell pressure, and (c) the swell pressure.

Prediction of Swelling Potential and Pressure in Compacted
SWELL AND SWELLING POTENTIAL PRESSURE TEST

method of test for swell of bituminous mixtures CAUTION: Prior to handling test materials, performing equipment setups, and/or conducting this method, testers are required to read “SAFETY AND HEALTH ” in Section I of this method.
The free swell index test discussed in this paper involves a very simple, user-friendly testing procedure, requiring negligible instrumental sophistication. The test results in the form of free swell ratio proposed can be used to obtain quite reliable information about the …
03 Determination of Differential Free Swell Index – Download as PDF File (.pdf), Text File (.txt) or read online. a
The Free Swell Index test has been conducted on soil sample with the addition of 0%, 0.5%, 1% and 1.5% of fibre content. From the graph (chart – 1), it is seen that, the free swell index
To predict free swelling potential and pressure, the multiple regression analyses were performed for the different values of dry unit weight, initial water content and plasticity index of three samples. The proposed relationships and the equations in the literature were compared with the test results of these samples in optimum water content and maximum dry unit weight and of another compacted
Crucible swelling index (free swelling index) The simplest test to evaluate whether a coal is suitable for production of coke is the free swelling index test. This involves heating a small sample of coal in a standardised crucible to around 800 degrees Celsius (1500 °F).
Sample kept for free swell index Allow the samples to settle in both the cylinders. Record the individual and the mean results to the nearest second decimal. Sufficient time.
The UBC index test does not attempt to replicate any particular moisture or loading conditions that actually exist in the field, it is simply a relative index of swell potential.
advisable to use a standard test liquid, such as described in 6.1.1 and 6.1.2, covering the range of properties that may be encountered in the particular service.
Expansion Index Test (ASTM D4829-11) • A soil specimen is remolded into a standard 102 mm (4.01 in) diameter, 24.5 mm (1 in) tall ring at a degree of saturation of about
Test results indicate that properties of BC soil, which are important for pavement construction, get enhanced by bio enzyme stabilization. Keywords – Bio enzyme, CBR, Durability test, Free swell index, Permeability, UCS.
a Department of Civil Engineering, Indian Institute of Technology Bombay, Mumbai-400076, India. Expansive soils exhibit significantly high volumetric deformations and hence, pose a serious threat to stability of structures and foundations. As such, determination of their swelling properties (viz