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Liquid limit of soil

Liquid limit. The liquid limit corresponds to a water content at which soil material begins to flow and closes a groove of standard width. The liquid limit is determined with a cup that is filled with soil paste. The cup is lifted and dropped from a specified height. From the number of blows that are necessary to close the groove the liquid limit is calculated Why to test Liquid limit of Soil? The liquid and plastic limits of soils are both dependent on the amount and type of clay in a soil and form the basis... Besides their use for identification, the plasticity tests give information concerning the cohesion properties of soil... They are also used.

Liquid limit is the water content where the soil starts to behave as a liquid. Liquid limit is measured by placing a clay sample in a standard cup and making a separation (groove) using a spatula. The cup is dropped till the separation vanishes. The water content of the soil is obtained from this sample Liquid Limit is the minimum amount of water required to be added to a soil, expressed as a percentage of the dry weight of the soil, that will just make it to flow like a liquid when jarred slightly. At the Liquid Limit, soils have very small shear strength which may be overcome by the application of a little force, and cohesion is practically zero

Liquid Limit Test of Soil by Casagrande Method

Procedure to Determine The Liquid Limit Of Soil i) Place a portion of the paste in the cup of the liquid limit device. ii) Level the mix so as to have a maximum depth of 1cm. iii) Draw the grooving tool through the sample along the symmetrical axis of the cup, holding the tool perpendicular to the cup Liquid Limit Definition. The Liquid Limit, also known as the upper plastic limit, is the water content at which soil changes from the liquid state to a plastic state. OR. It is the minimum moisture content at which a soil flows upon application of very small shear force. O The liquid limit (LL) is conceptually defined as the water content at which the behavior of a clayey soil changes from the plastic state to the liquid state. However, the transition from plastic to liquid behavior is gradual over a range of water contents, and the shear strength of the soil is not actually zero at the liquid limit. The precise definition of the liquid limit is based on standard test procedures described below

The liquid limit (LL) It is defined as the percentage moisture content at which a soil changes with decreasing wetness from liquid to plastic consistency or with increasing wetness from plastic to liquid consistency. It is the water content at which a soil changes from plastic to liquid behavior Liquid Limit is defined as the minimum water content at percent on dry bases at which the soil changes its state from Liquid to Plastic State. With reference to the standard liquid limit device, it is defined as the minimum water content at which a part of soil cut by a groove of standard dimensions, will flow together for a distance of 12 mm under an impact of 25 blows in the device The water content corresponding to 25 blows is read from the graph (flow curve) and is taken as the liquid limit, as shown in Fig. 5.3. The slope of the flow curve is determined, which gives the flow index. The liquid limit is reported to the nearest whole number. Some soils tend to slide on the surface of the cup instead of flowing

Liquid Limit - an overview ScienceDirect Topic

Previous studies stated that, with increasing salinity, the decreased liquid limit for expansive soils was attributed to the shrinkage of diffuse double layer, while the increased liquid limit for non-expansive soils was explained by the growing particle flocculation. These two mechanisms seem to be controversial and it is difficult to understand how an increasing salinity can promote soil. The value of liquid limit is used in classification of the soil and it gives an idea about plasticity of the soil. Theory: The liquid limit is the moisture content at which the groove formed by a standard tool into the sample of soil taken in the standard cup, closes for 12 mm on being given 25 blows in a standard manner Liquid limit of soil can also be used to predict the consolidation properties of soil while calculating allowable bearing capacity and settlement of foundation. Also, liquid limit value of soil is also used to calculate activity of clays and toughness index of soil. For this experiment regarding to the results we notice that liquid limit is equal to (51.679%), and also we calculated it by US. Procedure of Liquid Limit Test : Take about 30 to 40 gm of given soil passing through 425 microns IS sieve in evaporating disc. Add water to form a paste. Leave the soil for sufficient time so that water may permeate throughout the soil mass

From the test point of view, the liquid limit of soil can be defined as: Liquid limit of soil is the minimum water content at which a pat of soil cut by a groove of standard dimension will flow together for a distance of 12 mm under an impact of 25 blows in the apparatus (either Casagrande or Cone Penetrometer. The value of liquid limit helps in classification of fine grain soil. The values of liquid limit are required to calculate flow index, toughness index etc. Limitations of Liquid Limit Test Procedure for Determination of the Plastic Limit. See Also: Definition of Plastic Limit . From the 20g sample select a 1.5 to 2 g specimen for testing

The liquid limit of a soil is an indicator of the compressibility of a soil. The compressibility of the soil generally increases with an increase in liquid limit The shrinkage index is directly proportional to the percentage of clay-size fraction present in the soil. It can be used as an indicator of clay Liquid Limit (LL) is the water content at which soil changes from a plastic to a liquid state when the soil specimen is just fluid enough for a groove to close when jarred in a specified manner. Plastic Limit (PL) is the water content at the change from a plastic to a semi-solid state The liquid limit of fine-grained soil is the water content at which soil behaves practically like a liquid, but has small shear strength. Its flow closes the groove in just 25 blows in Casagrande's liquid limit device. Apparatus. 1- Casagrande's liquid limit device 2- Grooving tools of both standard and ASTM types 3- Oven 4- Evaporating dish 5- Spatula 6- IS Sieve of size 425μm 7.

Liquid Limit of Soil, Test, graph, Atterberg limits, lab

chapter 30 - Liquid Limit and its Determination - Casagrande MethodLiquid limit as the water content of the soil at which it changes its state from being liq.. The liquid limit of a soil is the water content at which the soil behaves practically like a liquid, but has small shear strength. It flows to close the groove in just 25 blows in Casagrande's liquid limit device. As it is difficult to get exactly 25 blows in a test, 3 to 4 tests are conducted and the number of blows (N) required in each test is. Liquid limit is simply the moisture content at which soil changes from liquid to plastic state. Casagrande apparatus is used to test the liquid limit of soil. Casagrande apparatus consists of a rubber base & brass cup. A sample is filled in a cup, which is subjected to blows with a rotating handle with two revolutions per second. Experimentally, the liquid limit is the moisture content. Soil type Liquid limit Plastic LimitSands 20 0 Silts 27 20Clays 100 45Colloidal clays 399 46 Table 5. Common values of liquid and plastic limits of common soils Plasticity index is an important parameter that can be used to classify soil. Soils that have high plasticity index are considered to tend to clay. Adding even modest quantities of water to such soils may cause unusually large and.

2.1 The liquid limit of a soil is the moisture content, expressed as a percentage of the weight of the oven-dried soil, at the boundary between the liquid and plastic states of consistency. The moisture content at this boundary is arbitrarily defined as the water content at which two halves of a soil cake will flow together, for a distance of ½ in. (12.7 mm) along the bottom of a groove of. chapter 31 - Liquid Limit and its Determination - Cone Penetration MethodLiquid limit as the water content of the soil at which it changes its state from bei.. Procedure for Liquid Limit Test Observations & Calculations:. Plot the relationship between the water content, w, and the corresponding number of drops,... Precautions. After performing each test the cup and grooving tool must be cleaned. The number of blows should be just... Applications. The value. The liquid limit of the soil is determined in the laboratory by the Standard AASHTO Test Method T-89 (Appendix II-7). A sample of the soil being tested is mixed with water to a paste consistency. It is then placed in the semi-spherical-shaped brass cup of the mechanical liquid limit device (Figure VI-17A), and the surface is leveled-off with a spatula so that the maximum thickness is 1 cm. The. Liquid limit of soil is a very important property of fine grained soil or cohesive soil, its value is used to classify fine grained soil. It also gives information regarding the state of consistency of soil on site. Liquid limit of soil can also be used to predict the consolidation properties of soil while calculating allowable bearing capacity and settlement of foundation. Also, liquid limit value of soil is also used to calculate activity of clays and toughness index of soil.The plastic.

  1. The liquid limit is the moisture content at which the groove, formed by a standard tool into the sample of soil taken in the standard cup, closes for 10 mm on being given 25 blows in a standard manner. This is the limiting moisture content at which the cohesive soil passes from liquid state to plastic state
  2. Elucidates the relative importance of soil structure and various compositional factors in influencing the liquid limit of natural kaolinitic soils. It was anticipated that kaolinitic soils with a..
  3. es the water content at which the... Plastic Limit:. The
  4. Introduction: The liquid limit (LL) It is defined as the percentage moisture content at which a soil changes with decreasing wetness from liquid to plastic consistency or with increasing wetness from plastic to liquid consistency. It is the water content at which a soil changes from plastic to liquid behavior
  5. Liquid limit : The boundary water content between the liquid state and the plastic state is called the liquid limit. This is the stage when the sample change from possessing no shear strength to having an very low shear strength. or. Liquid limit of clay soil is the water content at which soil change from plastic to liquid states. At liquid limit, clay is like a liquid only but do posses some small shearing strength

Liquid Limit of Soil The Construction Civi

Liquid Limit (LL) • In the lab, the Casagrande Liquid Limit Device is used for determining the liquid limits of soils (ASTM D 4318). • the LL is defined as the moisture content (%) required to close a 2-mm wide groove in a soil pat a distance of 12.7 mm along the bottom of the groove after 25 blows the liquid limit are the same size for all soils [1] and, hence, the quantity of free pore water at the liquid limit is a constant; 3. soils have similar pore water suction at the liquid limit [4-6]. This means that the ratio of adsorbed water to clay surface area should be about the same at the liquid limit; 4. at the liquid limit, different fine-grained soils have approximately equal. 2 Take the water content corresponding to the intersection of the line with the 25-drop abscissa as the liquid limit of soil. Computational methods may be substituted for the graphical method for fitting a straight line to the data and determining the liquid limit liquid limit) was added to the soil/ soil-lime mixture, and mixing was done frequently by hand. The soil samples thus prepared were kept in polythene bags and sealed. These sealed packets were kept in desiccator under 100% relative humidity and were cured for 0, 3, 7, 21 and 28 days at room temperature. After curing is done the samples were again mixed thoroughly before the tests were done. 3.

Determine The Liquid Limit Of Soil - Civil Engineerin

  1. Liquid limit of a particular soil is defined as the water content at which cone penetrates the soil up to 20 mm in 5 seconds But, since it is difficult to have such a water content of soil which gets us the exact 20 mm of penetration in 5 seconds, we repeat the whole procedure at least three more times with different water contents
  2. The liquid limit of fine-grained soil is the water content at which soil behaves practically like a liquid, but has small shear strength. It's flow closes the groove in just 25 blows in. Casagrande's liquid limit device. APPARATUS: CASAGRANDE'S LIQUID LIMIT DEVICE. i) Casagrande's liquid limit device ii) Grooving tools of both standard and ASTM types iii) Oven iv) Evaporating dish v.
  3. es the liquid limit of soils, defined as the water content of a soil at the arbitrarily deter
  4. ing other soil properties. As explained, plastic limit is the dividing line between the plastic and semisolid states
  5. ing the liquid limit of soil is known as Liquid Limit Test. The device used for this test is known as Casagrande
  6. The liquid limit has been defined as the water content of the soil at which the groove closes to 12 mm in 25 number of blows. That means our observation of water content w1 could be the liquid limit of our soil sample if number of blows given to soil sample N1 was 25

The liquid limit test, defined in ASTM Standard D4318, determines the water content at which the behavior of a clayey soil changes from plastic to liquid. However, the transition from plastic to liquid behavior is gradual over a range of water contents, and the shear strength of the soil is not actually zero at the liquid limit. The precise definition of the liquid limit is based on standard. The value of the liquid limit is used to classify fine-grained soils. It gives consistency and engineer properties of soil. At liquid limit Shear strength for most of the cohesive soils is 2.7 kN/m^2 and becomes zero as moisture content increases. The liquid limit is used to find derived atterberg limits of soil LIQUID LIMIT APPARATUS FOR SOILS 0. FOREWORD 0.1 This Indian Standard was adopted by the Indian Standards Institution on 10 July 1979, after the draft finalized by the Soil Engineering and Rock Mechanics Sectional Committee had been approved by the Civil Engineering Division Council. 0.2 The Indian Standards Institution has already published a series of standards on methods of testing soils. Liquid limit is defined as the water content at which the behavior of a clayey soil changes from plastic to liquid. Using ASTM Standard D4318, the liquid limit test of soil determines this transition over a range of water contents. More specifically, it gives valuable information regarding the state of consistency of soil on-site Types of the liquid limit of soil. 1) Liquid Limit(LL) The boundary of water between the liquid and plastic state of the soil is known as the liquid limit. The soil possesses very low shear strength at this stage. 2) Plastic Limit (PL) (plastic limit of soil) The boundary of water between the plastic states and semi-solid states of the soil is known as a plastic limit. 3) Shrinkage limit

Atterberg Limits Soil Classification - Liquid Limit

grained soil. The liquid limit (LL) is arbitrarily defined as the water content, in percent, at which a pat of soil in a standard cup and cut by a groove of standard dimensions will flow together at the base of the groove for a distance of 13 mm (1/2 in.) when subjected to 25 shocks from the cup being dropped 10 mm in a standard liquid limit apparatus operated at a rate of two shocks per. DETERMINATION OF LIQUID LIMIT- BY CASAGRANDE APPARATUS STANDARD IS: 2720 (Part 5) 1985. DEFINITION Liquid Limit is defined as the water content at which the soil changes from liquid state to plastic state. APPARATUS Casagrande apparatus confirming to IS: 9259-1979. Grooving tool. Balance of capacity 500 grams and sensitivity 0.01gram The liquid limit is arbitrarily taken as the water content when the soil has shear strength just sufficient to withstand the shearing stresses induced in 25 blows. The shear strength of the soil at the liquid limit is about 2.7 kN/m2

Atterberg limits - Wikipedi

The liquidity index (LI) is used for scaling the natural water content of a soil sample to the limits. It can be calculated as a ratio of difference between natural water content, plastic limit, and liquid limit: LI=(W-PL)/(LL-PL) where W is the natural water content. Activity of soil can be defined as ration of plasticity index to clay fraction as percentage. Data given Liquid Limit (LL)=45%. Atterberg limits, then, are water contents at critical stages of soil behavior. They, together with natural water content, are essential descriptions of fine-grained soils. Liquid Limit, LL Liquid limit is the water content of soil in which soil grains are separated by water just enough for the soil mass to loss shear strength. A little higher. Note: soils with a plasticity index lower than 10 percent and a liquid limit lower than 20 percent are cohesionless soils. These appear in a separate section of the plasticity chart and the above considerations do not apply Classify the following soils using Unified classification system Worked Examples Example 6 Soil Sieve analysis, Liquid Limit Plasticity indexNo.4 No.200 A 80 52 30 8 B 79 45 26 4 C 91 80 60 32 D 95 75 41 12 E 82 41 24 2 Dr. Abdulmannan Orabi IUST 40 41 Different soils have varying liquid limits. Also to find the plasticity index of a soil you need to know the liquid limit and the plastic limit. 2.4.2.5. Derived Limits. The values of these limits are used in a number of ways. There is also a close relationship between the limits and properties of a soil such as compressibility, permeability, and strength. This is thought to be very useful.

Liquid Limit of Soil when Plasticity Index is Given

  1. Both liquid limits and plastic limits are dependent upon the amount and type of clay present in a soil. A soil with high clay content usually has high liquid and plastic limits and a less cohesive soil gives low figures. The liquid and plastic limit tests attempt to fix the moisture contents at which a clay soil passes from the solid to the plastic state and from the plastic to the liquid.
  2. If theclay fraction controls properties, liquid limit of the soil will depend only on the value of WCLL and its proportion in the soil. The liquid limit of soil is c WLL = C/lOO WCLL
  3. 1.5 The liquid limit and plastic limit of soils (along with the shrinkage limit) are often collectively referred to as the Atterberg limits. These limits distinguished the boundaries of the several consistency states of plastic soils. 1.6 The composition and concentration of soluble salts in a soil affect the values of the liquid and plastic limits as well as the water content values of soils.

7 What is the importance of liquid limit and plastic limit

Liquid Limit of Soil. First Clean the liquid limit device , dry and check good working condition, the cup falls freely and it does not have too much play at its hinges. The height through which the cup is lifted and dropped shall be adjusted with the adjustment plate so that the point of cup that contacts the base falls exactly 1cm per one revolution of handle. Procedure : Take 120gm of soil. Definition :- Liquid limit is the water content where the soil starts to behave as a liquid. Aim :- To determine the liquid limit o.. Sieve analysis on a dry soil sample of mass 1000 g showed that 980 g and 270 g of soil pass through 4.75 mm and 0.075 mm sieve, respectively. The liquid limit and plastic limits of the soil fraction passing through 425 μ sieves are 40% and 18% respectively. The soil may be classified a Atterberg (1911) proposed a method for measuring the liquid limit of soils based on the number of blows required to cause a groove in a clay bed to collapse when the soil container was struck on the hand. As slope stability is a strength-based phenomenon, it would seem rational to assume that soil at the liquid limit exhibits a fixed soil strength that could in principle be measured by more.

Atterberg Limits: Determination of Plastic, Liquid

The liquid limit determination for soils is one of the most important of these tests. The standard method for determining the liquid limit of soils (1) requires that at least three random trials be made, each at a different moisture content. The moisture contents are plotted as the ordinates on an arithmetical scale and the number of blows as abscissae on a logarithmic scale. A flow curve is. Remove the soil from the liquid limit device and remix it. Wash and dry the LL cup at this time. Then repeat steps 2, 3, and 4 until three consistent blow counts are achieved for the water content. 7. Record the number of drops required to close the groove. Take a moisture sample by removing a portion of the sample the approximate width of the spatula across the area where the soil pat is in. tic limit and liquid limit, are well known as soil Atterberg limits. Plastic limit is the boundary between semi-solid and plastic state, and liquid limit separates plastic state from liquid state (Campbell, 2001). The methods developed by Casagrande (1932, 1958) to determine the liquid and plas-tic limits are considered as standard international tests. The width of the plastic state (liquid.

How to Determine the Liquid Limit of Soils

  1. multiple soil parameter is reasonable because the liquid limit is a soil property that is depend on soil type, particle size and particle surface characteristic. Consequently, in this study, an addition soil parameter such as void ratio should be included to account to predict the consolidation behavior or parameter. The empirical correlation result based on multiple soil parameters are showed.
  2. 8) The moisture content of a clayey soil is gradually reduced from a large value. The correct. sequence of the occurrence of the limit are (a) plastic limit, liquid limit and shrinka ge limit . (b) shrinkage limit, plastic limit and liquid limit. (c) liquid limit, plastic limit and shrinkage limit. (d) plastic limit, shrinkage limit and liquid.
  3. The liquid limit values of these soils ranged from 18 to 50 percent and the plasticity index values were less than 21 percent. Four basic soil types were tested: 1. Inorganic clays of low to medium plasticity, silty clays, lean clays. 2. Inorganic silts and silt clays. 3. Inorganic clays and silts of low plasticity. 4. Nonplastic materials, mostly silty sands. MOISTURE TENSION METHOD EQUIPMENT.
  4. ing both plastic and liquid limits, the soil sample must first be sieved through a 0.425 mm sieve (#40 mesh). It is advisable to test the liquid limit first. In coarse textured soils it is usually difficult to control water content for the liquid limit test and those soils may not even have a plastic limit. Liquid Limit is the soil water content where the soil changes from a.
  5. Строительство: влажность грунта (при которой грунт переходит из жидкого состояния в пластичное
  6. ing Liquid Limit: The liquid limit deter
  7. imum water content at which the soil is still in the liquid state, but... 2) Plastic limit The plastic limit is defined as the
Soil Mechanics: Soil Classification Systems

Salinity effect on the liquid limit of soils SpringerLin

Liquid limit of a soil is the minimum water content at which the soil can flow under a specified small disturbing force. It is the moisture content at which soil still poses some shear strength. If the water content of soil is increased beyond liquid limit, then there will be no shear strength in the soil and the soil will behave like a liquid. It may also be defined as the water content at. According to BS EN ISO 17892-12:2018 there are three methods to determine liquid limit and plasticity index of soils. Previously, BS 1377 PART 2:1990 used the definitive method of a cone penetrometer. This method superceded the Cassagrande method after 1975 (Smith's Elements of Soil Mechanics, 9th Ed, 2014, pp11-13) The problem with the Cassagrande method is that it is highly dependant on the. LIQUID LIMIT TEST . THEORY: The liquid limit is the moisture content at which the groove, formed by a standard tool into the sample of soil taken in the standard cup, closes for 10 mm on being given 25 blows in a standard manner. This is the limiting moisture content at which the cohesive soil passes from liquid state to plastic state The liquid limit is the water content at which a soil changes from a liquid to a plastic state. This document describes the determination of the liquid limit of a specimen of natural soil, or of a specimen of soil from which material retained on a 0,4 mm or nearest sieve has been removed, using the fall-cone method. This standard has adopted both the 60 g/60° cone and the 80 g/30° cone as it.

Liquid Limit Test - iricen

  1. Plasticity Index, Liquid Limit, Stiff Soil, Consistency Index 1. Introduction Physical properties of soil, such as bulk density, cohesiveness and shear strength have been noted to affect stability of disturbed soil [1] [2] [3]. Other authors [4] have also used similar properties to characterize the nature and behaviour of soils. Problem soil comprises of expansive, soft clay, collapsible and.
  2. liquid limit (LL), plastic limit (LL), and plasticity index (PI) of tertiary clay, organic silt, and weathered soil, respectively with different chemical additives. In general, the figures show that the addition of lime, fly ash, and lime/fly ash together, in case of the three studied soils, led to an increase in both the liquid limit and the plastic limit. The increase of the plastic limit is.
  3. Soil is said to be in the plastic range when it possesses water content in between liquid limit and plastic limit. The range of the plastic state is given by the difference between liquid limit and plastic limit and is defined as the plasticity index. The plasticity index is used in soil classification and in various correlations with other soil properties as a basic soil characteristic [14.
  4. the Liquid Limit (LL) of such soils is 50-70, and the Plasticity Index (PI) ranges from 25-45 Atterberg Limits tests were performed in our laboratory to help classify and evaluate the expansion potential and drained shear strength (Ø) of the residual clayey soils mantling the slopes surrounding the site and estimate the residual shear strength (Ør) of the landslide slip surfaces(s). The.

Liquid limit & plastic limit test - SlideShar

Question is ⇒ At liquid limit, all soils possess, Options are ⇒ (A) same shear strength of small magni-tude, (B) same shear strength of large magni-tude, (C) different shear strengths of small magnitude, (D) different shear strengths of large magnitude, (E) , Leave your comments or Download question paper The liquid limit, plastic limit, and plasticity index of soils are also used extensively, either individually or together, with other soil properties to correlate with engineering behavior such as compressibility, hydraulic conductivity (permeability), compactibility, shrink-swell, and shear strength. (See Section 6, Interferences. between ASTM and BS, on the values of soil liquid limit[11-21]. Different relationships have been proposed from these researches and showed that the conclusions of the experiments of them are widely varied. The tests of a number of natural soils from some countries (e.g. Brazil and Canada) presented that the soil with low plasticity (liquid limit <50%) the Casagrande cup-device gives lower.

Plastic Limit And Liquid Limit Test For Soil - Procedur

This test method determines the Liquid Limit of a soil, this is the moisture content where the material changes from a plastic to a liquid state. This test is identical to AS1289.3.1.1 with extra amendments generally related to further mixing of the sample. The test is a four point test that uses the material at four different moisture contents to graph and then determine the liquid limit. To. The liquid limit of fine-grained soil is the water content at which soil behaves practically like a liquid, but has small shear strength. It's flow closes the groove in just 25 blows in. Casagrande's liquid limit device. APPARATUS: i) Casagrande's liquid limit device ii) Grooving tools of both standard and ASTM types iii) Oven iv) Evaporating dish v) Spatula vi) IS Sieve of size 425μm. limit. When the soil is at its liquid limit, its liquidity index is 100% and it behaves as a liquid. When the soil is at the plastic limit, its liquidity index is zero. Negative values of the liquidity index indicate water content smaller than the plastic limit. The liquidity index is also known as Water-Plasticity ratio. Mathematically, = − × 100 Consistency index: the. This Paper elucidates the relative importance of soil structure and various compositional factors in influencing the liquid limit of natural kaolinitic soils. Earlier studies dealt with purified systems and anticipated that the liquid limit of the soils would increase with percentage clay size fraction and surface area, and that soils with a greater degree of particle flocculation would.

Atterberg Limits – Soil Lab ModulesClass 3 (a) Soil Plasticity (Atterberg LimitsLiquid limit penetrometers, Soil testing equipment, ControlsDetermination of Liquid Limit and Plastic Limit of SoilSoil mechanics

The grooving tools, which also refer to the different Standards, are not included and have to ordered separately. Casagrande limit liquid device, hand operated model. Comforming to EN 17892-12, ASTM D4318, AASHO T89. Liquid limit device with counter BS model. Motorised liquid limit device BS model. 230V, 50Hz, 1ph When soil is at plastic limit, the liquidity index is 0. Its also called as water plasticity ratio. 3.CONSISTENCY INDEX:- (Ic,CI) - Soil indicate hearness of water control of soil to its plastic limit. - Ic is zero at liquid limit. - Ic is 100% When soil is relatively strong, as it is in semi solid stage. - It is also known as relative consistency of soil compaction using the liquid limit and plastic limits. They also gave the special equations for so-called wet and dry parts of the curve compaction 12 . Blotz et al. (1998) also proposed two equations for es-timation the compaction parameters of soil using the liquid limit for different compac- tion effort: standard and modified 2 . Sridharan and Nagaraj (2005) proposed two empirical. Undrained shear strength of a soil at the liquid limit can be considered to be around 1.7 kN/m 2. Accordingly, both the liquid limit and the plastic limit have been determined in the present work by a single consistent method, i.e., the Swedish fall cone method. The undrained shear strength-water content relationship has been found to be log-linear for a wide range of water contents beginning. In this paper, the freezing-thawing cycle of low liquid limit silty soil in the seasonal frozen area is studied. The purpose is to reveal the change rule of water-holding performance of low liquid limit silty soil under freezing-thawing cycle and describe the change rule by SWCC. At the same time, after discussing several typical SWCC models, the V-G model is adopted to obtain a set of high. Objective For determination of the liquid limit of soil using casagrande apparatus. Reference Standard IS : 2720(Part 5)-1985- Methods of test for soils : Determination of liquid and plastic limit. Equipment & Apparatus Oven Balance (0.01g accuracy) Sieve [425 micron] Casagrande apparatus Preparation sample After receiving the soil sample it is dried in air or [

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