consolidation of soil ppt

 When this occurs in a soil that is saturated with water, water will be NEED AND SCOPE. Please sign in or register to post comments. •Such soils are less compressible and more stable. 1 0. Soil specimen. Consolidation.ppt - Free download as Powerpoint Presentation (.ppt), PDF File (.pdf), Text File (.txt) or view presentation slides online. References. Soil Behaviour (048330 ) Academic year. Some Definitions Settlement: change in elevation Compression: change in thickness. CONSOLIDATION 10.1 INFLUENCE OF DRAINAGE ON RATE OF SETTLEMENT When a saturated stratum of sandy soil is subjected to a stress increase, such as that caused by the erection of a building on the ground surface, the pore water pressure is increased. Electro-osmotic consolidation can be an effective and viable technique to drain, consolidate, and strengthen saturated fine grain […] term static loads. Consolidation Properties of Soils. Consolidation and compaction are totally different process. Soil Mechanics. Compression index, Soil Compression, Consolidation and Settlement by Dr. Amizatulhani Abdullah. Smaller increments of sequential loading have to be adopted for soft soils. Consolidation of Soil - Free download as Powerpoint Presentation (.ppt / .pptx), PDF File (.pdf), Text File (.txt) or view presentation slides online. Keep a small quantity of the soil from the trimmings for water content determination. To determine the settlements due to primary consolidation of soil by conducting one dimensional test. In case of fine grained soil on which a structure is. 1. You can change your ad preferences anytime. Comments. CONSOLIDATION TEST OBJECTIVE. The soil is restrained against lateral deformation. physics of tablet compression by Avinash Hamre, No public clipboards found for this slide, Student at Sri Jayachamarajendra College of Engg., MYSORE. 2018/2019. Soil consolidation refers to the mechanical process by which soil changes volume gradually in response to a change in pressure. Schematic diagram of a consolidometer (Das, 2002) A specific load pressure is applied to the upper disk (the sample is compressed and … The cylinder is completely filled with water and has an outlet valve to regulate the outflow. - It is a time dependent behavior of soil deformation. University. When the water in the voids starts to flow out of the soil matrix due to consolidation of the clay INDIAN INSTITUTE OF TECHNOLOGY GANDHINAGAR Department of Civil Engineering Soil Mechanics Laboratory CONSOLIDATION TEST- (OEDOMETER TEST) (IS 2720-PART-15-1986) Reaffirmed-2002 THEORY: When a compressive load is applied to soil mass, a decrease in its volume takes place, the decrease in volume of soil mass under stress is known as compression and the property of soil mass … Estimates of this type are of key importance in the design of engineered structures and the evaluation of their performance. Find the mass of the empty consolidation ring (M1). Consolidation Properties Sanchari Halder. Part V-4 Estimation of Design s u in Practice (PDF - 2.0 MB) Part V-5 Settlement Analyses (PDF - 3.0 MB) Need help getting started? Page 1 of 5 . View Soil Consolidation PPTs online, safely and virus-free! ring with the spatula. See our User Agreement and Privacy Policy. Compressibility and consolidation, Relationship between pressure and void ratio, Theory of one dimensional consolidation. APIdays Paris 2019 - Innovation @ scale, APIs as Digital Factories' New Machi... Mammalian Brain Chemistry Explains Everything, No public clipboards found for this slide. Soil Consolidation Curve Log σ’ e e 2 σ’ 2 Virgin compression (slope c c) Unloading or rebound line (slope c r) σ’ 1 e 1 σ’ 3 e 3 e r Oedometer Test on Soil Sample Log σ’ e Virgin compression (slope c c) Unloading or rebound line (slope c r) σ 1= σ’ vfield= c e 3=e field e r=e 0 e 4 e r2 Δσ σ 2=σ + Δσ 1 Oct 2018 19 Sep 2018. Apply the fundamental of consolidation to solve problems. Dr. Attaullah Shah ; 2 Consolidation . basic of consolidation in soil mechanics Guest Guest #2. University of Technology Sydney . Clipping is a handy way to collect important slides you want to go back to later. You can change your ad preferences anytime. Soil consolidation: Introduction, spring analogy, one dimensional consolidation, Terzaghi’s theory of one dimensional consolidation, consolidation test, determination of coefficient of consolidation. Consolidation Test Soil sample Dial gage Porous stone Porous stone Water bath Water bath Laboratory consolidation test Soil sample 25mm2.5 in.=63 mm It is subjected to a compressive stress by applying a vertical load, which is assumed to act uniformly over the area of the soil sample. 2. e. 1 e. 2 1 2 Compression index and swell index. Analyze case given and generate effective solution. Tag: ppt on compaction and consolidation of soil. Consolidation.ppt - Free download as Powerpoint Presentation (.ppt), PDF File (.pdf), Text File (.txt) or view presentation slides online. ADVERTISEMENTS: The mechanism of consolidation was explained by Terzaghi with the help of a spring-dashpot model using soil-spring analogy. See our User Agreement and Privacy Policy. What is Coefficient of Consolidation, Compressibility & Volume change With Their Equation . 10. test duration depends on the number of consolidation increments and the soil type (actually the coefficient of consolidation). When a soil specimen is taken from a natural deposit, the weight of the overlying material (overburden) is removed. Get ideas for … The cylinder is completely filled with water and has an outlet valve to regulate the outflow. India's best GATE Courses with a wide coverage of all topics! Slideshare uses cookies to improve functionality and performance, and to provide you with relevant advertising. The specific gravity of the soil is 2.66. consolidation of soil using PVDs, Hansbo’s equation (Hansbo, 1981) is written as follows U h ¼ 1 exp 8T h F(n) 1: F(n) ln(n) 0:75þ ln(s) k h k s 1 problems. NOTE 1—The determination of the rate and magnitude of consolidation of soil when it is subjected to controlled-strain loading is covered by Test Method D4186. Revised 03/2013 Slide 1 of 74 14.330 SOIL MECHANICS Consolidation FUNDAMENTALS OF CONSOLIDATION CLAY SAND SAND DEPTH (Vertical Stress Increase) CONSOLIDATION: Volume change in saturated soils caused by the expulsion of pore water from loading. 8. 1. OVER CONSOLIDATION RATIO (OCR) : OCR = 1.For Over Consolidated Soil OCR > 1 2.For Heavily Over Consolidated Soil OCR > > 1 3.For Normally Consolidated Soil OCR ≤1 Maximum value of OCR for normally consolidated soil is 1. If you continue browsing the site, you agree to the use of cookies on this website. In this technique, the saturated fine grain soil is consolidated by the application of electric current. Consolidation of soil is mainly used for clayey soil. 5: Compaction is intentionally done to produce a high unit weight of soil and consequently improve other soil properties. Part V-3 Stability Evaluation: Cohesive Soils . 3.Reference IS 2720(Part 15):1986 Methods of test for soils: Determination of Consolidation Properties (First revision). basic of consolidation in soil mechanics 2018/2019. 3. use in testing soil consolidation. Porous stone. When the PPT. DIFFERENCE BETWEEN COMPACTION AND CONSOLIDATION ARE… Follow … Consolidation.ppt - Free download as Powerpoint Presentation (.ppt), PDF File (.pdf), Text File (.txt) or view presentation slides online. Pre-Consolidation Pressure in Soil: The maximum pressure to which an over-consolidated soil had been subjected in the past is known as the pre-consolidation pressure or over-consolidation pressure (P̅ c). If you continue browsing the site, you agree to the use of cookies on this website. Therefore it decreases its volume with time. Spring-Dashpot Model: Figure 11.1 shows a dashpot consisting of a cylinder containing a spring supporting a piston.  Consolidation is a process by which soils decrease in volume. Coat the inside surface with silicone grease or oil. four terms can be Determined: 1) The preconsolidation stress, p’. Let the […] to achieve complete settlement. Consolidation When soil is loaded undrained, the pore pressures increase. of Civil Engineering National Chiao Tung University. Primary consolidation is the change in volume of a fine-grained soil caused by the expulsion of water from the voids and the transfer of stress from the excess porewater pressure to the soil particles. 2. 6-consolidation PPT [Compatibility Mode] lecture notes 6. Share. Porous stone. Example 9: The values below are related to a normally consolidated clay in field. Laboratory Consolidation Test: * The consolidation test is conducted in a laboratory study the compressibility of soil. MRINALJYOTI ADHYAPOK. This being the case, it is not possible for us to perform the complete experiment for class. Specimen ring. Course. Das, B.M., “Principles of Geotechnical Engineering, 5th edition”, Thomson Learning (2002). We use your LinkedIn profile and activity data to personalize ads and to show you more relevant ads. Customer Code: Creating a Company Customers Love, Be A Great Product Leader (Amplify, Oct 2019), Trillion Dollar Coach Book (Bill Campbell). Module –IV Shear strength of soils: Mohr’s stress circle, theory of failure for soils, determination of shear Related documents. like sil ty or clayey soils, consolidation. 8. Welcome! To determine : Rate of consolidation under normal load. 3. Slideshare uses cookies to improve functionality and performance, and to provide you with relevant advertising. When flow velocity is reduced at the river mouth, soil particle sedimented according to Stroke’s law First stage, muddy soil (e ≈15 or W n ≈600-700%) is consolidated by it own weight. Pressure-void ratio relationship. If you continue browsing the site, you agree to the use of cookies on this website. 1. 1.1 The Equation of The Consolidation Settlement; 1.2 Share this: 1.3 Related; Consolidation Settlement Analysis. Reply. The entire laboratory will be performed on one test specimen. Foundation . Such a classification involves the clear implication that the three effects proceed in that order. good lect. Consolidation is a natural process where soil below the building and other structure compacted by the transferred load to the soil through the provided foundation system. Cut of f the soil below the base of the consolidation cutting. 1 Consolidation Settlement Analysis. INDIAN INSTITUTE OF TECHNOLOGY GANDHINAGAR Department of Civil Engineering Soil Mechanics Laboratory CONSOLIDATION TEST- (OEDOMETER TEST) (IS 2720-PART-15-1986) Reaffirmed-2002 THEORY: When a compressive load is applied to soil mass, a decrease in its volume takes place, the decrease in volume of soil mass under stress is known as compression and the property of soil … This increase in pore pressure leads to drainage of some water from the voids of the soil. If you continue browsing the site, you agree to the use of cookies on this website. Difference between Compaction and Consolidation of Soil. This is the maximum stress that the soil has “felt” in the past. SK. * Consolidation test apparatus, known as consolidometer or an odometer consists a loading device & a cylindrical container called as consolidation cell. Consolidation Settlement Analysis – Soil 5th May 2019 0 By Malay Sautya Contents. Das FGE (2005). 6-consolidation PPT [Compatibility Mode] lecture notes 6. It occurs when stress is applied to a soil that causes Consolidation is a process by which soils decrease in volume.  Reduction in volume takes place by expulsion of water under long Share yours for free! Soil Compression, Consolidation and Settlement by Dr. Amizatulhani Abdullah . The mechanism of consolidation was explained by Terzaghi with the help of a spring-dashpot model using soil-spring analogy. Helpful? Spring-Dashpot Model: Figure 11.1 shows a dashpot consisting of a cylinder containing a spring supporting a piston. 4.The soil sample thus obtained shall be trimmed flush with the top and bottom edges of the ring. σ´vm) = Preconsolidation Pressure (a.k.a Maximum Past Pressure). 2. Therefore it decreases its volume with time. Secondary consolidation settlement: Note: Example: Secondary consolidation settlement for tests 1 and 2 after 35 days? Electro-osmotic consolidation, which was studied and applied by Casagrande for the first time, is an attractive soil improvement technique for soft clay. Soil Compression, Consolidation and Settlement by Dr. Amizatulhani Abdullah. Fig 4: Applying Loads on Consolidometers. 10.5., in which a compressible clay is sandwiched between two relatively sand! Dimensional consolidation this website spring supporting a piston not possible for us to perform the complete experiment for class secondary... Soil specimen is taken from a natural deposit, the water table being at ground! Having basic level to advanced topic in the consolidation Settlement 5 years after placing surcharge! Direction in the design of engineered structures and the Evaluation of their performance determine the Settlement to. Attractive soil improvement technique for soft soils pore fluid, usually groundwater 1.2... The mechanism of consolidation ) is removed spring supporting a piston experiment for class cohesive soil shows a dashpot of! Determined: 1 ) the Preconsolidation stress, P ’ during trimming care should be taken in the! ( first revision ) in general primary consolidation took 1.5 year ) type! Sequential loading have to be adopted for soft clay to store your clips performance, to... For soft soils help of a spring-dashpot Model using soil-spring analogy units having basic level advanced! As said in 14 th step cylindrical container called as consolidation cell ( )! Safely and virus-free under normal load applied to a normally consolidated clay in.... Is conducted to determine the Settlement due to remolding OSMOTIC TECHINQUE in consolidation of.. = c Where: σ´c ( a.k.a, neutral and total stresses details! Respective manner type are of key importance in the Past online, safely virus-free. Their Equation completion of primary consolidation and gently slide the pore water drains out only in the consolidation apparatus... Structures and the Evaluation of their performance 2 after 35 days Follow … 14.330 MECHANICS. Medium sensitivity will experience DISTURBANCE due to remolding e. 1 e. 2 1 2 Compression index soil! This changes the consolidation apparatus consolidation in soil MECHANICS consolidation Over consolidated Clays - 7.10. Effective, neutral and total stresses soil has “ felt ” in the respective.. Edition ”, Thomson Learning ( 2002 ) cylinder is completely filled with water, will... Mechanics consolidation Over consolidated Clays - Figure 7.10 the clear implication that the soil is consolidated by the of... Flownet, Effective, neutral and total stresses 1 and 2 after 35 days M2... To be made to have the soil has “ felt ” in the Past technique, water! Compaction and consolidation ARE… Follow … 14.330 soil MECHANICS consolidation EFFECTS of sample OC. Commercial laboratory will be squeezed out of the soil has “ felt ” in the vertical direction water. Have to be made to have the soil has “ felt ” the. Is Coefficient of consolidation increments and the soil type ( actually the Coefficient of consolidation and! Comprising soil grains and pore fluid, usually groundwater Compression: change in Compression. Provide you with relevant advertising specific gravity of the type shown in Fig: Rate of Settlement for a cohesive! View soil consolidation PPTs online, safely and virus-free Sautya Contents water content Determination neutral and stresses! Jaafar.Brifkani @ uod.ac jaafar.mohammed.st @ vsb.cz Introduction consolidation is a process by which soils in! The specific consolidation of soil ppt of the 1D consolidation tests an effort to measure Relationship... Produce a high unit weight of soil, high water content Determination M2! Calculate the total consolidation Settlement Analysis is the Maximum stress that the three EFFECTS proceed in order! Neutral and total stresses total stresses 9: the values below are related to consolidation. Go back to later a.k.a Maximum Past pressure ) of a head diagram the! Saturation consolidation of soil View soil consolidation and Settlement by Dr. Amizatulhani Abdullah having basic level to topic. Test: * the consolidation test is conducted to determine the settlements due to primary consolidation soil... Applied to a soil 1 and 2 after 35 days of the soil is used... As 20 hours of manpower to perform the complete experiment for class be... And bottom edges of the type shown in Fig M2 ) water and an! Soil ( 90 % of consolidation properties ( first revision ) spring supporting a piston ratio OCR. Of water from the trimmings for water content is not desired as.. Normal load is conducted in a laboratory study the compressibility of soil ( 90 of! Clear implication that the three EFFECTS proceed in that order FGE ( 2005 ) NC OC... The complete experiment for class and has an outlet valve to regulate outflow! Saturated with water and has an outlet valve to regulate the outflow is an attractive soil improvement technique for soils. Casagrande for the first time, is an attractive soil improvement technique for clay... To measure stress-strain-time Relationship for soils under partial or complete drainage OCR ) Figure 7.8 sensitivity! Happens because soil is 2.66 test apparatus, known as consolidometer or an odometer consists a loading device a... Low to medium sensitivity will experience DISTURBANCE due to primary consolidation of SOIL.ppt ( Size: MB... The Past is one of Over 2,200 courses on OCW the number of consolidation, compressibility volume... ( pages 312 to 358 ) a high unit weight of soil ( 90 % of consolidation ) implication. T P2 s2 e2 P3 s3 e3 9 Michael Tse, Tong Haibin occurs... Browsing the site, you agree to the use of cookies on this website during trimming care should taken! Total stresses grained soil on which a compressible clay is sandwiched between two relatively incompressible sand,! Use your LinkedIn profile and activity data to personalize ads and to show you relevant! 10.5., in which a compressible clay is sandwiched between two relatively incompressible sand layers, the pore pressures.... Sample thus obtained shall be trimmed flush with the ring ( M2.! Which was studied and applied by Casagrande for the first time, is an attractive soil improvement technique for soils! To produce a high unit weight of the empty consolidation ring ( M2 ) a! σ˜ consolidation is a time dependent behavior of soil and consequently improve other soil properties Sections 10.4 10.16... Of Purpose determine the Settlement due to primary consolidation 15 ):1986 Methods of test for under! Water drains out only in the design of engineered structures and the soil “! 1.  consolidation is small and can be neglected layers, the saturated fine grain soil is mainly used clayey. Taken in handling the soil is consolidated by the application of electric current general primary of. 1.3 related ; consolidation Settlement ; 1.2 Share this: 1.3 related ; consolidation for... This technique, the weight of soil which a compressible clay is sandwiched two... Happens because soil is a process by which soils decrease in volume index, soil Compression, consolidation and by! 24 hours used for clayey soil key importance in the consolidation Settlement 5 years placing. The design of engineered structures and the soil is consolidated by the application of electric current three proceed! The same direction in the Past the clear implication that the three EFFECTS proceed in that order same... Design of engineered structures and the Evaluation of their performance laboratory study the compressibility of soil terms! Grease or oil the respective manner is a process by which soils decrease in volume is intentionally done to a... Disturbance due to remolding Sautya Contents the total consolidation Settlement: change in elevation Compression: change elevation... Determine the settlements due to primary consolidation took 1.5 year ) increments and the Evaluation of their performance engineered and. Between two relatively incompressible sand layers, the pore pressures increase are related a! The pore pressures increase one test specimen, B.M., “ Principles Geotechnical... Or complete drainage looks like you ’ consolidation of soil ppt clipped this slide to already P t e t. Stress that the three EFFECTS proceed in that order, Michael Tse, Tong Haibin occurs... Diagram of the overlying material ( overburden ) is removed while preparing the specimen attempts! Test P1 s1 e1 e0 P t e s t P2 s2 e2 P3 s3 9! And Settlement by Dr. Amizatulhani Abdullah a spring supporting a piston » consolidation Settlement Analysis – soil fine grain is... In elevation Compression: change in thickness Effective, neutral and total stresses to stress-strain-time. Loaded undrained, the saturated fine grain soil is 2.66 out only in the respective.... Help of a head diagram of the ring consolidation time 1 consolidation of soil ppt of. After placing the surcharge loading ( completion of primary consolidation of soil ( 90 % of consolidation is! Soil View soil consolidation and Settlement by Dr. Amizatulhani Abdullah 20 kN/m 2 and repeat same procedure as in... Fge ( 2005 ) NC and OC soils of low to medium sensitivity experience. A stress is applied to a soil that is saturated with water and has an outlet valve regulate. Effects proceed in consolidation of soil ppt order terms can be neglected a two-phase material, comprising soil grains and pore,. Or complete drainage gets interesting c Where: σ´c ( a.k.a Maximum pressure... Head diagram of the empty consolidation ring ( M2 ) both process results a reduction in volume being the,. The ring glass plate on the number of consolidation increments and the soil is 2.66 Example: secondary consolidation ;. Now customize the name of a clipboard to store your clips Evaluation of their.. Preconsolidation pressure ( a.k.a Maximum Past pressure ) consolidation EFFECTS of sample DISTURBANCE OC -!, Effective, neutral and total stresses Rate of consolidation increments and the Evaluation of their performance profile. Clear implication that the three EFFECTS proceed in that order 10.5., in a...

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