Interpretation Example Atterberg Limits Soils show different states of stability depending on the water content. This property is described as consistency and specifies the state of a remolded and cohesive soil. The states range from:
When water is added to a dry soil, each particle is covered with a film of adsorbed water. If the addition of water is continued, the thickness of the water film on a particle increases. Increasing the thickness of the water films permits the particles to slide past one another more easily.
The behavior of the soil, therefore, is related to the amount of water in the system. Approximately sixty years ago, A. Atterberg defined the boundaries of four states in terms of "limits" as follows: Atterberg's Definitions Liquid limit: The boundary between the liquid and plastic states; Plastic limit: The boundary between the plastic and semi-solid states; Shrinkage limit: The boundary between the semi-solid and solid states.
Casagrande as the water contents which exist under the following conditions: The water content at which the soil has such a small shear strength that it flows to close a groove of standard width when jarred in a specified manner.
The water content at which the soil begins to crumble when rolled into threads of specified size. The water content that is just sufficient to fill the pores when the 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. OR The moisture content at which any increase in the moisture content will cause a plastic soil to behave as a liquid.
The limit is defined as the moisture content, in percent, required to close a distance of 0.
Liquid Limit LL or wL - the water content, in percent, of a soil at the arbitrarily defined boundary between the semi-liquid and plastic states. Atterberg's Limits Plastic Limit Definition The Plastic Limit, also known as the lower plastic limit, is the water content at which a soil changes from the plastic state to a semisolid state.
OR The moisture content at which any increase in the moisture content will cause a semi-solid soil to become plastic. Plastic Limit PL or wP - the water content, in percent, of a soil at the boundary between the plastic and semi-solid states.
Plasticity It is defined as the property of cohesive soil which posses the ability to undergo changes of shape without rupture or a change in volume.
Non plastic soils Soil that do not have plastic limit are reported as being non-plastic e. Non plastic soils make excellent road materials when properly confined under wearing course.
Even when wet they form hard, durable surface whereas clean sand displaces easily under the load.4 PLASTIC LIMIT Discussion In our experiment we have determined the liquid from CIVIL ENG CE at Jordan University of Science & Tech.
Uploaded By ali Pages 6 PLASTIC LIMIT Discussion In our experiment we have determined the liquid limit, plastic limit, and plastic index%(4).
Standard Test Methods for Liquid Limit, Plastic Limit, The liquid and plastic limits of a soil and its water Liquid Limit Device—A mechanical device consisting of a brass cup suspended from a carriage designed to control its 5 Annual Book of ASTM Standards, Vol View Test Prep - Lab Report 2 - Atterberg Limit Test from EASC at Royal Melbourne Institute of Technology.
Lab Report 2: Atterberg Limits Test Objective: %(1). the transition from plastic to liquid behaviour is gradual over a range of water contents.
OBJECTIVE To determine the liquid limits of soil using cone penetrometer methods. Documents Similar To Liquid Limit Lab Report. Plastic Limit Test. Uploaded by.
Ah Gus. Atterberg Limit: Liquid and Plastic Limit report. Uploaded by. Abigail Lorico. Objective Determination of Liquid Limit and Plastic Limit through Cone Penetrometer Method Sample preparation 1) ± g of air-dried soil is pulverised and passed the sieve size µm.
2) 80 ± ml of water is added to the soil and mixed as thoroughly as possible. 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, permeability, compactibility, shrink‑swell and shear strength.