scholarly journals Effect of Waste Engine Oil Contamination on the Geotechnical Properties of Cohesive Soils in Sulaimani City, Iraq

2020 ◽  
Vol 27 (1) ◽  
pp. 11-18
Author(s):  
Nihad Bahhaaldeen Salih ◽  
Tavga Aram Abdalla ◽  
Sundus Abbas Ali
Keyword(s):  
Contaminated Soil ◽  
Construction Material ◽  
Swelling Pressure ◽  
Cohesive Soil ◽  
Linear Shrinkage ◽  
Liquid Limit ◽  
Geotechnical Properties ◽  
Engine Oil ◽  
Cohesive Soils ◽  
Waste Engine Oil

The effect of waste engine oil (WEO) contamination on the geotechnical properties of cohesive soils was investigated. Three cohesive soils were collected from three locations in Sulaimani City. Geotechnical laboratory tests were carried out included consistency properties, unconfined compression strength, swelling pressure, and compressibility properties for both of intact and contaminated soil samples. Various percentages (0%, 1%, 2%, 4% and 6%) of WEO were mixed with the selected cohesive soil as a simulation of the field contamination issue. The results showed that the liquid limit (LL), plastic limit (PL), plasticity index (PI) increased as the content of WEO increased, however, experienced a decrease at 1% WEO content, thereafter an increase commenced again. The values of linear shrinkage limit, unconfined compressive strength (UCS), swelling pressure (SP) and Recompression index (Cr) decreased as the content of the WEO increased. The values of compression index (Cc) also increased at 0%, 1% and 2% WEO content, after that a little increase commenced again. WEO contaminated soil requires stabilization before using it as a construction material and/or for construction projects foundations.

scholarly journals Geotechnical and Mineralogical Appraisal of Shale and Claystone Facies of the Maastrichtian Patti Formation, Bida Basin, Nigeria

2020 ◽  
Vol 5 (2) ◽  
Author(s):  
Olusola J Ojo ◽  
Oladele A Omotoso ◽  
Adams Agbelekale ◽  
Suraju A Adepoju ◽  
Ayodeji Awe ◽  
...  
Keyword(s):  
Particle Size ◽  
Civil Engineering ◽  
Construction Material ◽  
Liquid Limit ◽  
Geotechnical Properties ◽  
Atterberg Limits ◽  
Minor Amount ◽  
Low Permeability ◽  
High Plasticity ◽  
Swell Potential

The need for construction materials in the rapidly developing areas around Federal Capital Territory, Abuja, Nigeria cannot be overemphasized and this study was undertaken in line with this need. The study area, located about 60km from Abuja, is underlain predominantly by shales and claystones of the Patti Formation. These argillaceous rocks may offer locally sourced construction material if they meet certain specifications, however to date, there has not been a geotechnical study of these rocks. The geotechnical properties and the mineralogy of the shale and claystone were investigated to evaluate their suitability for civil engineering works. Particle size distribution, Atterberg  limits and X-ray diffraction analyses were performed on fifteen shale and claystone samples collected  from  three localities (along an approximately 25km transect) for determination of their geotechnical properties and mineralogical composition. Mineralogical data obtained show the samples are dominated by kaolinite with minor amount of montmorillonite. Quartz and minor amounts of microcline, rutile and anatase dominate the non-clay mineral fraction. Particle size data indicate high proportion of fines and they are well graded. The Atterberg limits indicate that the samples have average values of liquid limit of 51%, plastic limit of 23%, plasticity index of 29% and shrinkage limit of 13%. These indicate they are of medium compressibility, low to medium shrink/swell potential, marginal expansive rating and low permeability. High bulk specific gravity (average of 2.61) suggests the samples are inorganic and this is supported by the consistency limits values. Generally, the results indicate the shale and claystone can be useful as stabilizing materials in civil engineering works. In addition, the marginally expansive nature of the shale and claystone, low permeability and intermediate to high plasticity may make them suitable as road subgrade.Keywords— activity, Bida Basin, Gerinya, Kaolinite, plasticity, Patti Formation

Axonopus compressus: A Resilient Phytoremediatior of Waste Engine Oil Contaminated Soil

2017 ◽  
Vol 14 (2) ◽  
pp. 1-10
Author(s):  
Chinenye Chijioke-Osuji ◽  
Ebenezer Belford ◽  
Bernard Fei-Baffoe
Keyword(s):  
Contaminated Soil ◽  
Engine Oil ◽  
Waste Engine Oil

scholarly journals Bench Scale Treatability Studies of Contaminated Soil Using Soil Washing Technique

2010 ◽  
Vol 7 (1) ◽  
pp. 73-80 ◽  
Author(s):  
M. K. Gupta ◽  
R. K. Srivastava ◽  
A. K. Singh
Keyword(s):  
Contaminated Soil ◽  
Soil Washing ◽  
Dry Weight ◽  
Geotechnical Properties ◽  
Engine Oil ◽  
Plain Water ◽  
Soil Matrix ◽  
Lubricant Oil ◽  
Cadmium Metal ◽  
Geochemical Reactions

Soil contamination is one of the most widespread and serious environmental problems confronting both the industrialized as well as developing nations like India. Different contaminants have different physicochemical properties, which influence the geochemical reactions induced in the soils and may bring about changes in their engineering and environmental behaviour. Several technologies exist for the remediation of contaminated soil and water. In the present study soil washing technique using plain water with surfactants as an enhancer was used to study the remediation of soil contaminated with (i) an organic contaminant (engine lubricant oil) and (ii) an inorganic contaminant (heavy metal). The lubricant engine oil was used at different percentages (by dry weight of the soil) to artificially contaminate the soil. It was found that geotechnical properties of the soil underwent large modifications on account of mixing with the lubricant oil. The sorption experiments were conducted with cadmium metal in aqueous medium at different initial concentration of the metal and at varying pH values of the sorbing medium. For the remediation of contaminated soil matrices, a nonionic surfactant was used for the restoration of geotechnical properties of lubricant oil contaminated soil samples, whereas an anionic surfactant was employed to desorb cadmium from the contaminated soil matrix. The surfactant in case of soil contaminated with the lubricant oil was able to restore properties to an extent of 98% vis-à-vis the virgin soil, while up to 54% cadmium was desorbed from the contaminated soil matrix in surfactant aided desorption experiments.

scholarly journals Stabilization of Black Cotton Soil by Using GGBS, Lime and Nano-Silica

2020 ◽  
Vol 3 (9) ◽  
pp. 1-7
Author(s):  
Mahesh Vastrad ◽  
M. Karthik ◽  
Varsha Dhanavandi ◽  
M. S. Shilpa
Keyword(s):  
Compressive Strength ◽  
Unconfined Compressive Strength ◽  
Swelling Pressure ◽  
Liquid Limit ◽  
Geotechnical Properties ◽  
Black Cotton Soil ◽  
Building Structures ◽  
Nano Silica ◽  
Pavement Surface ◽  
Study Laboratory

Soil is known of their geotechnical properties and suitability as base, sub-based and sub-grade materials for road construction with the increase in population reduce the land availability. In current situation there is increasingly more development of structures and other structural building structures must be completed on less strength or poor soil. Black cotton soil is found in Madhya Pradesh, Karnataka, Maharashtra Andhra Pradesh & Tamilnadu covering an area of about 3.0 lakh sq. km in our nation. Black cotton soil is one of the largest soil stores of India, so for the reason need to increase its geotechnical properties and make it comfortable for the development reason. In pavement surface causes problems like cracking, rutting, patching, potholes and detoriation in the pavement surface. The development on black cotton soil (expansive soil) has consistently been a giving tough task for the specialists as the Road & structure laying on black cotton soil breaks without any notice. Stabilization of soil by GGBS couldn't just take care of the issue of appropriate stabilization of black cotton soil, yet in addition settle the issue of removal of a modern waste for example GGBS. The properties of black cotton soil can be modified by stabilizing the soil with the use of additives or stabilizers like Lime (6%), GGBS (30%) & Nano silica (0.3%, 0.6% & 0.9%). There is increase in various geotechnical properties like liquid limit, and plastic limit, compaction characteristics, unconfined compressive strength, CBR values and swelling pressure were determined. An experimental investigation is carried out to study the influence of admixture in soil with respect to the strength characteristics. In this comparative study laboratory tests such as Atterberg’s limit, Compaction test, swelling index and California Bearing Ratio (CBR)& Unconfined compressive strength (UCS)test were carried out for black cotton soil.  

Controlling porosity and density of nanocellulose aerogels for superhydrophobic light materials

TAPPI Journal ◽  
2018 ◽  
Vol 17 (03) ◽  
pp. 145-153 ◽  
Author(s):  
Chengua Yu ◽  
Feng Wang ◽  
Shiyu Fu ◽  
Lucian Lucia
Keyword(s):  
Contact Angle ◽  
Freeze Drying ◽  
Engine Oil ◽  
High Porosity ◽  
Water Mixture ◽  
Waste Engine Oil ◽  
Hydrophobically Modified ◽  
Static Contact ◽  
Oil Water ◽  
Hydrophobic Material

A very low-density oil-absorbing hydrophobic material was fabricated from cellulose nanofiber aerogels–coated silane substances. Nanocellulose aerogels (NCA) superabsorbents were prepared by freeze drying cellulose nanofibril dispersions at 0.2%, 0.5%, 0.8%, 1.0%, and 1.5% w/w. The NCA were hydrophobically modified with methyltrimethoxysilane. The surface morphology and wettability were characterized by scanning electron microscopy and static contact angle. The aerogels displayed an ultralow density (2.0–16.7 mg·cm-3), high porosity (99.9%–98.9%), and superhydrophobicity as evidenced by the contact angle of ~150° that enabled the aerogels to effectively absorb oil from an oil/water mixture. The absorption capacities of hydrophobic nanocellulose aerogels for waste engine oil and olive oil could be up to 140 g·g-1 and 179.1 g·g-1, respectively.

scholarly journals An investigation into the cause of road failure along Sagamu-Papalanto highway southwestern Nigeria

2021 ◽  
Vol 8 (1) ◽  
Author(s):  
Ubido Oyem Emmanuel ◽  
Igwe Ogbonnaya ◽  
Ukah Bernadette Uche
Keyword(s):  
Construction Materials ◽  
Road Construction ◽  
Linear Shrinkage ◽  
Liquid Limit ◽  
Dry Density ◽  
Maximum Dry Density ◽  
Southwestern Nigeria ◽  
Low Resistivity ◽  
The Road ◽  
Cause Of Failure

AbstractInvestigation into the cause of road failure has been carried out along a 60 km long Sagamu –Papalanto highway southwestern Nigeria. Geochemical, mineralogical, geotechnical and geophysical analyses were conducted to evaluate the cause of failure along the study area. The results of the laboratory tests showed that the percentage amount of fines ranges from 12 to 61.3%, natural moisture content from 6.8 to 19.7%, liquid limit in the range of 25.1–52.2%, linear shrinkage between 3.96 to 12.71%, plastic limit ranges from 18.2–35%, plasticity index ranges from 5.2 to 24.6%, free swell in the range from 5.17–43.9%, maximum dry density ranges from 1.51–1.74 g /cm3, specific gravity ranges from 2.52–2.64 and CBR between 3 and 12%. The Cone Penetrometer Test (CPT) shows a resistance value of 20–138 kgf/cm2. The major clay mineral that is predominant in the studied soil is kaolinite. The major oxides present are SiO2, Al2O3, Fe2O3, K2O, Na2O, MgO and CaO. The result of the 2D Electrical Resistivity Imaging revealed a low resistivity values for profile 2 and 3 ranging from 100 Ωm – 300 Ωm, between a distance of 20 m – 240 m along the profile to a depth of 7.60 m and a low resistivity value ranging from 50 Ωm – 111Ωm, between a distance of 80 m − 120 m along the profile to a depth of 15 m. It was concluded that the low CBR, low MDD and the class of subsoils namely A-26, A-7, A-2-7 (clayey soils) which were identified are responsible for the cause of failure experienced in the study area. These makes the soils unsuitable as road construction materials and hence, there is need for stabilization during the reconstruction and rehabilitation of the road.

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