scholarly journals Analysis of the ratio between the plasticity of clay and the expansion capacity by changes in humidity and temperature

2021 ◽  
Vol 2139 (1) ◽  
pp. 012010
Author(s):  
J R Cáceres ◽  
J R Pineda-Rodríguez ◽  
J P Rojas-Suárez
Keyword(s):  
Test Tube ◽  
Liquid Limit ◽  
Plasticity Index ◽  
Plastic Limit ◽  
San Jose ◽  
Free Expansion ◽  
Geotechnical Characterization ◽  
Expansion Capacity ◽  
The Relationship

Abstract Clay is a cohesive material that varies in volume due to changes in humidity and temperature. Its behavior is studied with physical and geotechnical characterization of the material. The experimental analysis of the expansiveness of clays is related to plasticity, which depends on the expansive minerals it contains. The objective is to analyze the relationship between the plasticity index and the expansion capacity due to changes in humidity and temperature; various types of clay from San José de Cúcuta, Colombia, were studied. Liquid limit and plastic limit were analyzed with which the plasticity index was determined. The test tube free expansion and calcination were carried out at 1000 °C to determine the volumetric change due to humidity and temperature, respectively. The clays with plasticity index of 10% - 20% presented expansion by humidity of 5% - 10% and by calcination of 0% - 10%, which indicates low expansion; while the clay with plasticity index of 20% - 40% presented expansion by moisture of 20% - 50% and by calcination of 25% - 50%, which indicates moderately high expansion. The results show that there is a relationship between plasticity index and the expansion capacity due to changes in humidity and temperature.

scholarly journals Compressibility behaviour of remoulded, fine-grained soils and correlation with index properties

2000 ◽  
Vol 37 (3) ◽  
pp. 712-722 ◽  
Author(s):  
A Sridharan ◽  
H B Nagaraj
Keyword(s):  
Liquid Limit ◽  
Plasticity Index ◽  
Engineering Properties ◽  
Test Results ◽  
Index Properties ◽  
Initial Water ◽  
Fine Grained ◽  
Wide Range ◽  
The Relationship ◽  
Water Contents

Correlating engineering properties with index properties has assumed greater significance in the recent past in the field of geotechnical engineering. Although attempts have been made in the past to correlate compressibility with various index properties individually, all the properties affecting compressibility behaviour have not been considered together in any single study to examine which index property of the soil correlates best with compressibility behaviour, especially within a set of test results. In the present study, 10 soils covering a sufficiently wide range of liquid limit, plastic limit, and shrinkage limit were selected and conventional consolidation tests were carried out starting with their initial water contents almost equal to their respective liquid limits. The compressibility behaviour is vastly different for pairs of soils having nearly the same liquid limit, but different plasticity characteristics. The relationship between void ratio and consolidation pressure is more closely related to the shrinkage index (shrinkage index = liquid limit - shrinkage limit) than to the plasticity index. Wide variations are seen with the liquid limit. For the soils investigated, the compression index relates better with the shrinkage index than with the plasticity index or liquid limit.Key words: Atterberg limits, classification, clays, compressibility, laboratory tests.

scholarly journals PENGARUH PENAMBAHAN SERBUK BATA MERAH TERHADAP STABILITAS TANAH LEMPUNG SEBAGAI TANAH DASAR JALAN

2013 ◽  
Vol 10 (1) ◽  
Author(s):  
Moch. Sholeh ◽  
Dandung Novianto ◽  
Gerard Aponno
Keyword(s):  
Strong Support ◽  
Liquid Limit ◽  
Plasticity Index ◽  
Original Form ◽  
High Plasticity ◽  
Plastic Limit ◽  
Limit Values ◽  
Soil Mixing ◽  
Brick Powder ◽  
Index Value

Dosen Teknik Sipil Politeknik Negeri Malang Clay consists of grains - grains are very small (<0002 mm) and shows the nature - the natureof plasticity and cohesion. Cohesion indicates the fact that part - the part that is attached to eachother, while the plasticity is a trait that allows the form of the material was changed - edit withoutchanging the content or without returning to its original form, and without any cracks or brokens.And clay with high plasticity index has strong support low when used as a basic foundation of thehighway, so the need for soil improvement.From the above problems then this study aims to engineer clay with red brick powder in fourcomparisons. The first native land. Both the original soil mixed with red brick powder 5%. Thethird native soil mixed with red brick powder 7.5%. The four original soil mixed with red brickpowder 10%. Each of these sought specific gravity, liquid limit, plastic limit and plasticity index onthe original soil, mixing 5%, 7.5% and 10%. From the analysis of data obtained the followingconclusion: the original soil, the value amounting to 60.9 Liquid limit, plastic limit values of 42.8and plasticity index value of 18.1. The most optimal additional percentage is 7.5%. And PlasticityIndex value at 7.5% is 20,31.Key words : Red brick powder, Soil Stability, Subgrade and the Road.

scholarly journals STABILISASI TANAH LEMPUNG MENGGUNAKAN KERIKIL UNTUK MENINGKATKAN DAYA DUKUNG (CBR) DI LABORATORIUM SEBAGAI BAHAN TIMBUNAN

2018 ◽  
Vol 1 (1) ◽  
pp. 41
Author(s):  
Annisaa Dwiretnani
Keyword(s):  
Carrying Capacity ◽  
Clay Soil ◽  
Soil Classification ◽  
Liquid Limit ◽  
Optimum Moisture Content ◽  
Plasticity Index ◽  
Test Results ◽  
Plastic Limit ◽  
Soil Plasticity ◽  
Cbr Test

Clay is a type of soil that has a high shrinkage when the change in water content. Construction of roads built on clay soil often damaged, eg cracked or bumpy roads would be damaged so that road before reaching the age of the plan. This study analyzes the behavior of clay in the area of Mendalo Darat, Provinsi Jambi, get maximum soil density and optimum moisture content with the addition of gravel 10%, 20%, 30% and 40%, then tested in the from of nature of the soil, the California Bearing Ratio (CBR). The results, according to the Unified Soil Classification System (USCS) methods. The addition of gravel will cause the properties of the soil Liquid Limit (LL) decreased with Plastic Limit (PL) decreased so that the Plasticity Index (PI) decreased. The addition of gravel will be working actively on the CBR test. From the test results obtained, clay that is stabilized with gravel on variations of 10%, 20%, 30% and 40% indicate an increase in crayying capacity soil and significant decrease in plasticity index. On the gravel mixture of 40% there is significant increase in carrying capacity of 11,90% of power support for the original soil, and on the gravel mixture of 40% also decreased index plasticity of 1,21 % of the original soil plasticity index. The smaller the plasticity index, the carrying capacity is getting bigger.Keywords: clay, stabilized, CBR

scholarly journals Pengaruh Penambahan Abu Batu (Fly Ash) Terhadap Plastisitas Tanah Lempung Di Kabupaten Fakfak

2020 ◽  
Vol 19 (1) ◽  
pp. 79-86
Author(s):  
Muhammad Yunus ◽  
Muhammad Aswan
Keyword(s):  
Fly Ash ◽  
Clay Soil ◽  
Liquid Limit ◽  
Plasticity Index ◽  
Plastic Limit ◽  
The Road ◽  
Limit Value ◽  
A Value ◽  
Before And After ◽  
Index Value

The road conditions in the Fakfak Regency area have suffered a lot of damage, this is related to the subgrade condition of the road in the form of clay. One method that is widely used to improve the characteristics of clay that does not fulfill the requirements as a road subgrade material is to add fly ash. Aim of this study was to determine the value of clay plasticity before and after adding rock ash with the percentage of stone ash 8%, 16%, 32%. From the results of testing on clay soaked for 7 days can reduce the liquid limit value where the largest decrease is 15,24% of the original soil occurs in the addition of 32% fly ash with a value of 66,86%. The plastic limit value also decreased by 20,40% from the original soil with a value of 46,10% at the addition of 32% fly ash. And the plasticity index value experienced the largest decrease in the addition of 32% stone ash with a decrease of 0,97% from the original soil with a value of 20,76%. In clay soil which was brooded for 14 days the largest liquid limit value decreased which was 18.72% of the original soil occurred in the addition of 32% fly ash with a value of 64,11%. The plastic limit value also decreased by 21,77% from the original land with a value of 45,31% at the addition of 32% fly ash. And the plasticity index value experienced the largest decrease in the addition of 32% stone ash with a decrease of 10,32% from the original land with a value of 18,80%.

scholarly journals Identification of slip surfaces in shallow landslides at Aso volcano, Japan based on the fine fraction-plasticity index relationship

2020 ◽  
Author(s):  
Mega Lia Istiyanti ◽  
Satoshi Goto
Keyword(s):  
Physical Properties ◽  
Soil Layer ◽  
Fine Fraction ◽  
Liquid Limit ◽  
Shallow Landslides ◽  
Plasticity Index ◽  
Aso Volcano ◽  
Slip Surfaces ◽  
Different Characteristics ◽  
The Relationship

Abstract Shallow landslides have frequently occurred in the Aso volcano, Kyushu island, Japan. Yet, observations of the effects of the physical properties of the soil on the landslide stratigraphy have not been explained. In this study, we conducted field observations—at two landslide sites in the Takadake mountain (Aso volcano) area—to identify the slip surfaces. We found that slip surfaces (at both sites) were located in the lower part of the N3-4 Kuroboku soil layer. This was determined by characteristics of the physical properties of the soil, including particle size distribution and plasticity index. Furthermore, we identified the relationship between plasticity index and the fine fraction of the soil to help explain the identification of slip surfaces. Results showed that Kuroboku and Scoria layers have different characteristics according to the plasticity chart (liquid limit-plasticity index relationship) as well as plasticity index-fine fraction relationship.

scholarly journals Moisture retention and plasticity of highly calcareous soils in Egypt.

1976 ◽  
Vol 24 (1) ◽  
pp. 43-57
Author(s):  
W.P. Stakman ◽  
B.G. Bishay
Keyword(s):  
Particle Size ◽  
Particle Size Distribution ◽  
Size Distribution ◽  
Sandy Loam ◽  
Calcareous Soils ◽  
Liquid Limit ◽  
Plasticity Index ◽  
Plastic Limit ◽  
Moisture Retention ◽  
Unsaturated Condition

Particle size distribution, moisture retention curves and consistency limits were determined for six soils from northwestern Egypt. The soils contained 25-61% CaCO3 and attapulgite was the major clay mineral. In the clay and clay loam soils the CaCO3 was predominantly in the silt and clay fractions, in the sandy loam it was regularly distributed over the clay, silt and sand fractions and in the loamy sand it was mainly in the sand fraction. Decalcification shifted the particle size distribution to a coarser texture class and increased porosity and moisture content. Liquid limit and plasticity index increased with increasing clay and CaCO3 contents up to 40% clay and 35% CaCO3. The plastic limit stayed rather constant at increasing clay and CaCO3 contents. The liquid limit corresponded with suctions of pF 1.3-1.9 within the flex range from the saturated to the unsaturated condition of the pF curves. The plastic limit and the plasticity index corresponded with pF 2.1-3.0 and 2.6-3.8, respectively. (Abstract retrieved from CAB Abstracts by CABI’s permission)

scholarly journals UTILIZAÇÃO DA COMPACTAÇÃO PARA REDUÇÃO DO POTENCIAL DE COLAPSO/ EXPANSÃO DE UM SOLO SILTO ARGILOSO DE MASSAPÊ DA CIDADE DE ICÓ – CE

2016 ◽  
Vol 13 (1) ◽  
Author(s):  
Gleiber Da Silva Chagas ◽  
Alfran Sampaio Moura ◽  
Andressa De Araujo Carneiro
Keyword(s):  
Grain Size ◽  
Laboratory Tests ◽  
Expansive Soils ◽  
Liquid Limit ◽  
Shallow Foundations ◽  
Housing Development ◽  
Plastic Limit ◽  
Clayey Silt ◽  
The City

RESUMO: No presente trabalho apresenta-se um estudo do comportamento de um solo silte argiloso, de massapê da cidade de Icó-CE, que será utilizado como suporte das fundações das estruturas de um conjunto habitacional. O objetivo do trabalho é averiguar a eficiência da técnica da compactação na redução do potencial de colapso/expansão do solo estudado. Foi realizada uma caracterização do solo por meio de ensaios de laboratório (granulometria, limite de liquidez, limite de plasticidade, densidade real, compactação e CBR) e campo (SPT). Além disso, realizaram-se ensaios especiais do tipo edométrico simples e duplo. Foram coletadas ainda, em uma empresa local, um total de 20 furos de sondagens à percussão (SPT) e que foram realizadas no local do estudo. Pela análise dos resultados foi possível verificar que a compactação mostrou-se uma técnica eficiente para minorar ou mesmo eliminar o potencial de expansão/colapso do solo estudado. A realização deste trabalho contribui para a área do conhecimento pois comprova, a partir do estudo de um caso real, que a compactação de solos potencialmente colapsíveis ou expansivos, de fato, reduz seu potencial a níveis aceitáveis para uso como suporte de fundações superficiais de edifícios. ABSTRACT: FIn this paper we present a study of the behavior of a clayey silt soil, the city massapê Icó-CE, which will be used to support the foundations of the structures of a housing development. The objective is to ascertain the efficiency of the technique of compression in reducing the potential for collapse / expansion of the studied soil. A characterization of the ground by means of laboratory tests (grain size, liquid limit, plastic limit, real density, compaction and CBR) and field (SPT). In addition, there were special tests of simple and double edometer type. Were also collected, in one place, a total of 20 percussion boreholes (SPT) and were performed at the study site company. By analyzing the results we observed that compaction proved to be an efficient technique to reduce or even reduce the potential for expansion / collapse of the studied soil. This work contributes to the field of knowledge as proof, from the study of a real case that the compression of potentially collapsible or expansive soils, in fact, reduces its potential to acceptable levels for use as support shallow foundations of buildings.

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