Lateritic soil basedcompressed earth bricks stabilized. These properties can be evaluated by correct laboratory or insitu tests. Table 3 shows the properties assigned for laterite and shedi soil respectively. Lateritic soils in taiwan are mostly classi ed into ultisols and al sols and cover about percent of the cultivation lands. The plastics were grounded into pellets and substituted with laterite at 10%, 15%, 20%, 25% and 30% for. The properties of laterite soils sample indicate a moderate level of activeness with activity ratio less than 1. Mineralogical composition of the clay fraction seems to be very important from an engineering point of view and can be used as a means of identification and classification. Genetic characteristics compositional factors, such as particlesixe distribution, organic matter content, chemical and mineralogical composition, and. Laterite and lateritic soils the term laterite was originally used by buchanan 1807 for the highly ferruginous, vesicular and unstratified material observed in the malabar hills of south india. Geotechnical investigation is one of the effective means of detecting and solving pre, syn and post constructional problems. Pdf lateritic soils at the dall quarry in ilorin metropolis sango area, southwestern nigeria were investigated with respect to their. Effect of limeguinea corn husk ash on the engineering. The strength and stability of lateritic soil containing large amounts of clay cannot be guaranteed under load in the presence of moisture 9. The residue disturbed laterite soil available after dressing of natural laterite building blocks was used, reddish brown in nature classified as a270 using aashto soil classification system and gp by the united soil classification system.
The physical and chemical properties of tested laterite soil are given in table no. Influence of compactive effort on bagasse ash with cement. The physical and engineering properties of lateritic soils have been found to depend on their textural characteristics. The lateritic soil modeling with stabilization as a.
Physical and mechanical properties of alluvial and laterite soil no soil characteristics unit alluvial soil laterite soil 1 specific gravity gs 2,65 2,62 2 water content w % 38,85 22,25. The best quality laterite in the entire world is believed to be located in the mid range lands of northern kerala, spread in the districts of kannur and kasargod. The soil name laterite was coined by buchanan in 1807 in india, from a latin word later meaning brick. Anova showed that psa content has significant effect on the tested properties of lateritic soil. Geotechnical properties of lateritic overburden materials on. Pdf engineering properties of lateritic soils around dall. Dec 01, 2014 considering the potential of environmental magnetic methods in shedding light on pedogenesis and also the dearth of detailed studies of soil profiles from the tropics from a pedogenic point of view, we have investigated the environmental magnetic properties of lateritic soil profiles from the tropical southern india. Investigation of the index properties of lateritic soil. Sep 01, 1991 in this paper, the variation of classification properties within a laterite zone, and the effect of the method of sample preparation on the plasticity index for a lateritic soil profile found in coastal southeast queensland, australia, are investigated. A sedimentary laterite soil is examined for its suitability as a construction material by the consideration of its mineralogy and basic geotechnical. The understanding of soil behavior in solving engineering and environmental issues as swelling soil especially expansive lateritic soils that can cause significant damage to road construction and other engineering application is the sole aim of geotechnical engineering abubakar, 2006. A study of the geological and soil maps of nigeria 10,11 show that the samples taken belong to the group of ferruginous tropical soil derived from acid igneous and metamorphic rocks. Important properties of clay content of lateritic soils for.
Apr 01, 1989 a sedimentary laterite soil is examined for its suitability as a construction material by the consideration of its mineralogy and basic geotechnical properties as well as its consolidation and permeability in the compacted state. Engineering behavior and classification of lateritic soils in. To determine and compare the chemical, mineralogical and physicochemical composition of lateralite a stabilizer and the three different types of laterite soil samples for. One of the major causes of road accident is bad road which is usually. For example, laterite soils containing high percentages of hydrated halloysite, goethite, or gibbsite are known to be problem laterite soils. Importance of detailed sampling of lateritic soils is stressed for correct assessment of highway subgrade soils. Properties of a lateritic red soil for pollutant containment. The properties of the laterite soils taken for the study include. Developments in geotechnical engineering laterite soil.
Geotechnical properties of lateritic soil from nimo and. Abstractthe determination of the influence of activitie. Lateritic soils in its natural state generally have low bearing capacity and low strength due to high clay content. The poor geotechnical properties of the lateritic soils of failed sections imply that they are unsuitable for use as subgrade materials in road construction and even in other engineering structures. Genetic characteristics compositional factors, such as particlesixe distribution, organic matter content, chemical and mineralogical composition, and physicochemical characteristics etc. Laterites and lateritic soils laterite is a group of highly weathered soils formed by the concentration of hydrated oxides of iron and aluminium thagesen, 1996. Characterization of granular lateritic soils as pavement. Assessment of the geotechnical properties of lateritic soils.
Research article nature and properties of lateritic soils. This paper compares some geotechnical properties of kaolin, laterite and. Lateritic soil in its natural state generally have low bearing capacity and low strength due to high content of clay. These are the result of intense leaching due to tropical rains. Tropical weathering laterization is a prolonged process of chemical weathering which. Among them, the one of alexander and cady 3 is widely accepted. The use of lateritic soils consisting of high plastic clay content results. Geotechnical properties of termitereworked lateritic soil.
Chemical stabilization of laterite soils for road construction. The results obtained from the assessment of the geotechnical properties of the soil samples will be used to determine the usefulness of the soils in road construction by comparing it to the. Lateritic soil has less than 30% silt content, between 2563 % liquid limit and 542 % plasticity index 11 14. Pdf engineering properties of lateritic soils around. It certainly is more appropriate to employ as class ification criterion the silica sesquioxide ratio. The lateritic soil used in this study was taken along papailaro road ajegunle at abalabi, ogun state, nigeria and the solid plastic wastes were taken from different locations in ilaro. Research paper the suitability and lime stabilization. Important properties of clay content of lateritic soils. Based on the results of these tests, the soil was classified according to aashto soil classification system as an a75 soil which is a poor soil.
Geotehnical properties of plastic stabilized lateritic soil. This study is based on determining the engineering geotechnical properties of laterite soils which are observed to occur in the. Mineralogically, the soil contains virtually nothing undesirable while its basic geotechnical properties are those. Laterite stone wall cladding tiles, bricks and blocks. However, little is known of their geotechnical properties and. This study used ecofriendly materials known as periwinkle shell powder psp in stabilizing the engineering properties of lateritic. Engineering evaluation of lateritic soils of failed highway. The engineering properties of stabilized laterite soils depend on. The engineering tests were conducted on the lateritic soil stabilized with. Laterite, kaolin, peat, basic properties test, standard proctor test.
Soil physical properties were obtained from laboratory test according to astm testing standard. Failure of lateritic roads in nigeria and other developing countries has stressed the need for detailed geotechnical evaluation of lateritic soil prior its use in road construction in order to choose appropriate soil materials for the pavement structure. Plasticity ranges of lateritic soil and common clay minerals on casagrandes. Some engineering characteristics of a compacted lateritic residual soil. The plastics were grounded into pellets and substituted with laterite. Clay is an important component of lateritic soils, especially when assessed for civil. It is widely used to produce earth blocks, but stabilization is essential for the lateritic soil block to enhance its properties. Rock magnetic properties of lateritic soil profiles from. Table 2 shows the properties of the untreated lateritic soil sample. They develop by intensive and prolonged weathering of the underlying parent rock. The decreased was greater with higher bagasse ash content.
The formation, classification and characteristics of tropical soils. Engineering evaluation of lateritic soils of failed. Study on characteristic of laterite soil with lime. Analysis of these data showed that the powders are predominantly made of crystalline phases. The study was conducted at 10 site studies located at the laterite soil area by evaluating physicochemical properties and heavy metals concentrations by. Preliminary test was performed on the unstabilized lateritic soil for the purposes of identification and classification natural moisture content, liquid limits, plastic limits, and plasticity index. Iron and aluminum oxides are prominent in lateritic soils, and with the seasonal fluctuation of the water table, these oxides result in the reddishbrown. Pdf geotechnical properties of lateritic soil stabilized. Nearly all laterites are of rustyred coloration, because of high iron oxide content. Pdf geotechnical properties of lateritic soil as subgrade. Engineering behavior and classification of lateritic soils. Laterite soils and their engineering characteristics. Therefore, engineering index properties of laterites and lateritic soils are not reproducible 25.
Laterites are rich in iron oxides, aluminum oxides and low silicates but may contain appreciable amounts of kaolinite and due to the presence of iron oxides. With rain, lime and silica are leached away, and soils rich in iron oxide and aluminium compound are left behind. The soil used is a naturally reddishbrown lateritic soil. It also showed that laterite soil can enhance some properties of concrete depending on the nature of the laterite and also blended material. Lateritic soil is found in most area of nigeria and constitutes the main construction material for roads, bridges, dams and residential and industrial building. Plasticity characteristics of laterite soils sciencedirect. Coagulation and sedimentation of concentrated laterite. Soil type laterite soil lateritic soil non lateritic soil s1o2r2o3 1. Consolidation properties of compacted lateritic soil treated.
A better understanding of these properties will enhance the usage of the material in geotechnical engineering works in places where they are abundant. The geotechnical properties of lateritic soils and their suitability for road construction have been evaluated for selected sites in minna, northcentral nigeria. Adt4 termite reworked soil sample 4 adl1 lateritic soil sample 1 adl2 lateritic soil sample 2 4. Jan 23, 2016 soil erosion himalayan region, chambal ravines etc. Procedures for the geotechnical characterization of a lateritic soil for the performanceoriented design of compacted clay liners are also discussed. Laterite soil is formed under conditions of heavy rainfall with alternate wet and dry periods, and high temperature which leads to leaching of soil. View the article online for updates and enhancements. Lateritic soils are formed in the tropics through weathering processes that favor the formation of iron, aluminum, manganese and titanium oxides. Pdf study on characteristic of laterite soil with lime. Geotechnical properties of lateritic soil stabilized with. Lateritic soils are one of important soils and are widespread in tropical areas and subtropical climates. Air the relative amounts of these three phases are indications of the soils properties and conditions. Book chapter full text access chapter 6 significant geotechnical implications of the genesis if laterite soil pages 153169 download pdf.
Assessment of the geotechnical properties of lateritic. In many parts of the world, particularly in humid tropical regions, residual soils are abundant. Lateritic soil basedcompressed earth bricks stabilized with. Nature and properties of lateritic soils derived from. Lateritic soils that overburden mohammad buhari estate in abeokuta area of ogun state, nigeria is in great use for road construction. The laterites are typically formed in tropical clim. Pdf collapse potential of laterite soils editorijee. Stabilization, according to ogundipe 20, is the process of blending and mixing materials with a soil to improve certain properties of the soil. Proceedings of the speciality session on engineering properties of lateritic soils, 7th international conference on soil mechanics and foundation engineering, mexico city, mexico, pp. Bituminous stabilization of laterite modified with lime. Laterite is an exciting material which can be crafted, and has a lovely colour and texture. Some properties of a sedimentary laterite soil as engineering.
Journal of engineering and technologychemical stabilization. If one attempts to find the definition of laterite by searching the literature, he will encounter several different definitions. Characteristics study of stabilized and compressed. The compaction test on the lateritic soil control has its mdd as 1. A study of lateritic soils and samples of ground and river waters was carried out in the nsimi. These soils cover more than 40% of the total land area of the country. Pdf engineering properties of lateritic soils around dall quarry in. Lateritic soils, tyre ash, consolidation pressure, compression index, swell index.
Laterite soil laterite has been derived from the latin word later which means brick. Cbr tests were first carried out to determine the basic properties of the lateritic soil without the stabilizers. Engineering property for lateritic soil stabilized with ordinary portland cement. Optimization of bagasse ash content in cement stabilized. Chapter identification and evaluation of problem laterite soils. The result shows decreased in maximum dry density with increased in bagasse ash content and in shear strength properties there was decreased in cohesion and an increased in angle internal friction. On this ground, it is understandable that the geotechnical properties of lateritic soil could be. Pdf three lateritic soil samples derived from different parent rocks were examined for their suitability. Several previous studies on laterite soils by gidigasu 1974gidigasu, 1976 for have demonstrated the susceptibility of laterite soils degradation under load. Types of soil in india static gk notes pdf 6 download now.
Influences of laterite soil towards physicochemical. Mar 01, 2016 most of the lateritic soils fall in the range of low to medium plasticity. Geotechnical properties of lateritic overburden materials. Influence of compaction delay on cement stabilized. Laterite is a highly weathered material, rich in secondary oxides of iron, aluminum, or both. Laterite is both a soil and a rock type rich in iron and aluminum and is commonly considered to have formed in hot and wet tropical areas. To determine and compare the index properties of three selected laterite soils including physical, classification, strength and permeability.
Characteristics study of stabilized and compressed laterite. The laterite soils develop in areas with high temperature and high rainfall. However, laterite soil produced concrete that compares in strength with a normal concrete. These processes break down silicate minerals into clay minerals such as kaolinite and illite. Laterite ages very well as a material and becomes richer visually. Engineering properties of a lateritic soil profile. Consolidation properties of compacted lateritic soil. Laterite soils which are widespread in tropical areas of india possess unique color and it normally contains high clay content along with inert particles such as silt and sand 1. Full length research article assessment of the consolidation properties of compacted lateritic soils stabilized with up to 8% tyre ash were carried out using time dependent one dimensional consolidation test. Sep 01, 2020 xrd patterns of different samples raw laterite, calcined laterite, stabilized soils are presented in fig.
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