abdulla sharo - Academia.edu (original) (raw)
Papers by abdulla sharo
2023 International Conference on Intelligent Computing, Communication, Networking and Services (ICCNS)
Buildings
Due to a lack of geotechnical and geothermal studies on Jordanian limestone, this paper aims to p... more Due to a lack of geotechnical and geothermal studies on Jordanian limestone, this paper aims to provide the thermal properties, including thermal conductivity, thermal diffusivity, and specific heat, using the Hot Disk Transient Plane Source (TPS) 2200 method. It also aims to provide a set of mathematical models through which the thermal properties can be indirectly predicted from the rocks’ physical and engineering properties. One hundred cylindrical rock specimens with a height of 20 cm and a diameter of 10 cm were extracted and prepared. The results showed that the thermal conductivity values ranged between (1.931–3.468) (W/(m*k)), thermal diffusivity (1.032–1.81) (mm2/s), and specific heat (1.57–2.563) ((MJ)/(m3*K)). The results also suggest a direct relationship between conductivity and diffusivity and an inverse relationship between conductivity and specific heat. On the other hand, the results indicate the direct relationship between the conductivity and diffusivity, and the ...
Coatings, Dec 8, 2022
This article is an open access article distributed under the terms and conditions of the Creative... more This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY
Frontiers in Built Environment
The use of hydrophilic bentonite nanoclay to improve the geotechnical properties of expansive soi... more The use of hydrophilic bentonite nanoclay to improve the geotechnical properties of expansive soils was studied. Sonic waves and manual mixing for two expansive soils (taken from two different locations in Jordan) were studied; thereafter, a comparison between the results obtained from both methods was carried out. Different percentages of nanoclay were added to the two soils: 0, 0.1, 0.3, 0.5, 0.8, 1, 1.5, and 2.5% by dry weight of soil. Their impacts on compaction, unconfined compression strength (UCS), and free swell index (FSI) were investigated. For both methods of mixing, adding nanoclay to the soils resulted in a significant enhancement in strength and a reduction in swell properties of the soils. The UCS results of sonicated samples treated with 0.5% of nanoclay addition showed an increase of 27%–57% and a reduction in FSI by 41%–46.5%. Nevertheless, the UCS of non-sonicated samples treated with 1% of nanoclay showed an increase of 19.3–28.5% and a reduction in FSI by 37.3–4...
Case Studies in Construction Materials
Arabian Journal of Geosciences
International Review of Civil Engineering (IRECE)
This study aims to investigate the variation of P-wave velocity as a function of water saturation... more This study aims to investigate the variation of P-wave velocity as a function of water saturation. In addition, by using a regression analysis, a predictability of saturated P-wave velocity from dry P-wave velocity and rock's hardness has been examined. In order to perform this study, one hundred cylindrical rock core samples, fifty samples each obtained from Ruweished in northeastern Jordan and from Ajloun in northwestern Jordan, have been extracted and prepared with a height of 20 cm and a diameter of 10 cm. P-wave velocity has been measured five times in each sample in dry and saturated states and the average value has been taken. The results indicate that the water saturation leads to an increase of the P-wave velocity, where the increase in more porous samples is less than what has been found in slightly porous samples. Moreover, the saturated P-wave velocity can be predicted through strong statistical models, which link the saturated P-wave velocity with dry P-wave velocity and hardness
Congress on Technical Advancement 2017, 2017
Procedia Manufacturing, 2020
With the recently increased interest for sustainable engineering and its applications in geotechn... more With the recently increased interest for sustainable engineering and its applications in geotechnical engineering, soil treatment becomes a customary strategy used to enhance soils to accomplish the specifications of different projects. Soil stabilization, which includes soil stabilization by additives, is a well-known method to improve engineering properties of the expansive soil. The main purpose of this paper is to investigate the influence of using a formalin aqueous waste to improve the engineering properties of an expansive clayey-soil selected from the northern part of Jordan, Irbid city. To attain this target, several laboratory tests including Atterberg limits, standard proctor compaction, unconfined compression strength (UCS), and swell test were carried to compare the effect of adding different percentages of the formalin aqueous waste on the natural and the treated soil. The results showed that the used formalin improves the engineering properties of the expansive soil used in this study by increased the UCS, dry unite weight (γ d), reducing the swelling potential. Therefore, it can be considered as a good stabilizing agent for soil at different percentages.
Arabian Journal of Geosciences, 2022
In this study, the effect of the quasi rate of loading in the crushing of black tough sand will b... more In this study, the effect of the quasi rate of loading in the crushing of black tough sand will be studied experimentally. The experimental works will be conducted at different normal stresses, different relative densities, and different rates of loading using the direct shear tests. All test specimens were prepared with uniformly graded sand, passing sieve #4, and retained sieve #8.The results of direct shear tests were used to investigate the factors influencing the amount of particle breakage and consequently the friction angle. After shearing of each specimen, sieve analysis was performed in order to determine the percentage of particle breakage. Results showed that the rate of loading in direct shear plays a significant role in the amount of crushing and in internal friction angles. The amount of crushing as well as shear strength was increased with the increased rate of loading. Moreover, microstructural analysis used scanning electron microscopy (SEM) analysis shown that the ...
KSCE Journal of Civil Engineering, 2021
The influence of pozzolanic materials on calcium-based soil stabilization technique has recently ... more The influence of pozzolanic materials on calcium-based soil stabilization technique has recently attracted researchers’ attention as such materials may catalyze the occurrence of pozzolanic reactions due to their high SiO2 and AL2O3 content. In this study, the effect of adding natural zeolite, which is a common pozzolanic material, on soil stabilized with cement kiln dust (CKD) is investigated. The optimal CKD content was determined by conducting tests on soil treated with percentages of CKD (0%, 2%, 4%, 6%, 8%, 10%, and 12%), and then, the optimal CKD treatment was applied on soil replaced by different zeolite percentages (1%, 3%, 5%, 10%, and 15%). Atterberg limits, swelling, California bearing ratio and unconfined compression tests were performed on all samples to evaluate the performance of additives in stabilization. Unconfined compression test samples were cured for 0, 7, 14 and 28 days to study the effect of time. Addition of CKD resulted in reduction of soil swelling and a significant increase in the long-term strength to an optimum of 10% that resulted in 3-folds of strength value higher than the based soil. Addition of 15% natural zeolite to the optimized CKD stabilized soil, caused 21% increase of strength higher than that with CKD optimized soil, however the swelling is only slightly reduced.
Procedia Manufacturing, 2020
The main purpose of this research is to investigate the impact of disposing commonly used deterge... more The main purpose of this research is to investigate the impact of disposing commonly used detergents, namely Sodium Hypo-Chlorite, with a commercial name (Clorox), and Quaternary Ammonium Chloride commercially, known as (Flash), to soil on some of the geotechnical properties of different soils selected from three different locations in the northern part of Jordan. To achieve the goal of this research, two cohesive soils (Soil I and II) were selected. The initial physical properties of the selected soils including optimum moisture content, maximum dry density, grain size distribution, and cohesive soils unconfined compression tests were determined. Several samples were prepared by mixing the soil with different percentages of detergents (Clorox and Flash) and their effects were studied by conducting different experiments such as the modified proctor compaction test, the unconfined test and Atterberg limits test. The results indicated that as the percentage of detergents increased, th...
Journal of Materials in Civil Engineering, 2022
International Journal of Geotechnical Engineering, 2021
ABSTRACT The work presented in this paper aimed at investigating soil stratification and flow mov... more ABSTRACT The work presented in this paper aimed at investigating soil stratification and flow movement direction effects on the equivalent normal coefficient of permeability,(keq)n , of a layered soil system following the “falling head” permeability test procedure. A special mold capable of measuring the permeability of layered soil systems was manufactured. Downward flow, horizontal flow and upward flow have been considered. Experimental results showed that the order of soil layers has a significant contribution to the deviation between the experimental and the theoretical values of the equivalent coefficient of permeability. Greater deviations have been observed when the ratio of the inlet layer coefficients of permeability to the exit layer coefficient of permeability exceeds 1.0. A minor effect on the equivalent coefficient of permeability was noticed for the direction of flow movement. Moreover, an empirical formula capable of predicting the experimental coefficient of permeability value was presented herein.
World Journal of Engineering, 2018
Purpose The purpose of this paper is to evaluate the possible use of oil shale as a soil stabiliz... more Purpose The purpose of this paper is to evaluate the possible use of oil shale as a soil stabilizing agent for expansive soils. Design/methodology/approach An experimental work has been fulfilled to investigate the influence of oil shale ash (OSA) on the geotechnical behavior of the expansive soil of Irbid, Jordan. Three swelling-shrinkage soils were considered in this study along with various percentages of OSA varying at 2, 4, 6, 8, 10 and 12 per cent by dry weight of the soil. A series of laboratory tests were conducted on the soil samples before and after mixing it with OSA. These tests were soil classification, Atterberg limits, compaction test, falling head permeability test, unconfined compression test, free swelling, swelling pressure and California bearing ratio (CBR) test. Findings Laboratory tests results indicated that OSA is effective in improving the texture and strength of the treated soil by reducing plasticity index, swelling potential and swelling pressure and mode...
Geomechanics and Geoengineering, 2019
Observations derived from updated field test databases indicate that total axial pile capacity of... more Observations derived from updated field test databases indicate that total axial pile capacity of driven piles in sand continues to increase with time long after complete dissipation of excess pore pressure generated by pile driving. The increase in pile capacity with time is attributed to time-dependent increase in shaft capacity which is termed in the literature pile 'set up'. Although, many hypotheses have been proposed in literature, the exact mechanism that governs the observed setup is not yet fully understood and the estimation of the magnitude and rate of driven piles setup remains relying on empirical relationships derived from widely scattered data. In this paper, a new hypothesis is introduced which attributes the observed setup to the recovery of the soil surrounding the pile shaft from the friction fatigue processes induced during pile driving and a new methodology is formulated for the estimation of the magnitude and rate of driven pile setup in cohessionless soil. Comparison of predicted and measured shaft friction capacities of some welldocumented field cases comprising previously untested piles indicates acceptable results and suggests that the proposed approach can be used to estimate long time setup of driven piles in sand.
International Review of Civil Engineering (IRECE), 2019
The main purpose of this article is to investigate the possibility of improving expansive soils p... more The main purpose of this article is to investigate the possibility of improving expansive soils properties using different additives, cement, lime, and a combination of lime and cement. An experimental program has been carried out on expansive clayey samples taken from Irbid, Jordan. Cement, lime and cement-lime mixture have been added as percentages by dry weight of the soil at ratios of (3%, 5%, 8% and 12%). Different geotechnical properties including Atterberg limits, compaction test, unconfined compressive strength (UCS) and California bearing ratio (CBR) have been tested before and after using the additives. Free swelling and swelling pressure have been examined before and after after using the additives at no curing, after seven days curing and after 28 days curing. It is shown that, upon adding (cement, lime), the plasticity index and the swelling potential have decreased while the unconfined compressive strength (qu) and the maximum dry density (γd-max.) have increased. Also, the curing time increase is accompanied with a significant enhancement on the compressive strength (UCS) of the treated soil. It has also been noticed that the cement-lime mix (6% cement and 6% lime) has resulted in a noticeable improvement for the expansive soil used in this research over other additive percentages.
journal of Engineering Science and Technology Review, 2018
The effectiveness of stabilizing expansive soil by enhancing its geotechnical properties using ca... more The effectiveness of stabilizing expansive soil by enhancing its geotechnical properties using calcium chloride dehydrate (CaCl 2 .2H 2 O) as a soil stabilizing agent was investigated in this research. The chemical treatment process using calcium chloride elaborates carrying out experimental laboratory tests on an expansive soil taken from eastern side of Irbid city (Jordan) to check the influence of calcium chloride on its geotechnical engineering properties. Calcium chloride (CaCl 2) was added as a solution of 1.0 N concentration with 3:1 solution to soil ratio and soaked to allow for the occurrence of chemical reaction. The main soil properties studied in this work were the consistency limits, maximum dry density, optimum moisture content, the unconfined compression strength of the soil, swelling percentage, swell pressure and the Californian bearing ration test (CBR). Tests results, at different curing time, revealed that calcium chloride can be considered as a good stabilizing agent for expansive soil since its use displayed a significant reduction in swelling potential (80%) and swelling pressure (50%) after 28 of curing. Also, the use of CaCl 2 enhances soil strength properties by increasing the unconfined compression strength (q u), increasing the maximum dry unit weight (γ d−max .) and increasing the CBR from 2.11 % to 8.32 %.
2023 International Conference on Intelligent Computing, Communication, Networking and Services (ICCNS)
Buildings
Due to a lack of geotechnical and geothermal studies on Jordanian limestone, this paper aims to p... more Due to a lack of geotechnical and geothermal studies on Jordanian limestone, this paper aims to provide the thermal properties, including thermal conductivity, thermal diffusivity, and specific heat, using the Hot Disk Transient Plane Source (TPS) 2200 method. It also aims to provide a set of mathematical models through which the thermal properties can be indirectly predicted from the rocks’ physical and engineering properties. One hundred cylindrical rock specimens with a height of 20 cm and a diameter of 10 cm were extracted and prepared. The results showed that the thermal conductivity values ranged between (1.931–3.468) (W/(m*k)), thermal diffusivity (1.032–1.81) (mm2/s), and specific heat (1.57–2.563) ((MJ)/(m3*K)). The results also suggest a direct relationship between conductivity and diffusivity and an inverse relationship between conductivity and specific heat. On the other hand, the results indicate the direct relationship between the conductivity and diffusivity, and the ...
Coatings, Dec 8, 2022
This article is an open access article distributed under the terms and conditions of the Creative... more This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY
Frontiers in Built Environment
The use of hydrophilic bentonite nanoclay to improve the geotechnical properties of expansive soi... more The use of hydrophilic bentonite nanoclay to improve the geotechnical properties of expansive soils was studied. Sonic waves and manual mixing for two expansive soils (taken from two different locations in Jordan) were studied; thereafter, a comparison between the results obtained from both methods was carried out. Different percentages of nanoclay were added to the two soils: 0, 0.1, 0.3, 0.5, 0.8, 1, 1.5, and 2.5% by dry weight of soil. Their impacts on compaction, unconfined compression strength (UCS), and free swell index (FSI) were investigated. For both methods of mixing, adding nanoclay to the soils resulted in a significant enhancement in strength and a reduction in swell properties of the soils. The UCS results of sonicated samples treated with 0.5% of nanoclay addition showed an increase of 27%–57% and a reduction in FSI by 41%–46.5%. Nevertheless, the UCS of non-sonicated samples treated with 1% of nanoclay showed an increase of 19.3–28.5% and a reduction in FSI by 37.3–4...
Case Studies in Construction Materials
Arabian Journal of Geosciences
International Review of Civil Engineering (IRECE)
This study aims to investigate the variation of P-wave velocity as a function of water saturation... more This study aims to investigate the variation of P-wave velocity as a function of water saturation. In addition, by using a regression analysis, a predictability of saturated P-wave velocity from dry P-wave velocity and rock's hardness has been examined. In order to perform this study, one hundred cylindrical rock core samples, fifty samples each obtained from Ruweished in northeastern Jordan and from Ajloun in northwestern Jordan, have been extracted and prepared with a height of 20 cm and a diameter of 10 cm. P-wave velocity has been measured five times in each sample in dry and saturated states and the average value has been taken. The results indicate that the water saturation leads to an increase of the P-wave velocity, where the increase in more porous samples is less than what has been found in slightly porous samples. Moreover, the saturated P-wave velocity can be predicted through strong statistical models, which link the saturated P-wave velocity with dry P-wave velocity and hardness
Congress on Technical Advancement 2017, 2017
Procedia Manufacturing, 2020
With the recently increased interest for sustainable engineering and its applications in geotechn... more With the recently increased interest for sustainable engineering and its applications in geotechnical engineering, soil treatment becomes a customary strategy used to enhance soils to accomplish the specifications of different projects. Soil stabilization, which includes soil stabilization by additives, is a well-known method to improve engineering properties of the expansive soil. The main purpose of this paper is to investigate the influence of using a formalin aqueous waste to improve the engineering properties of an expansive clayey-soil selected from the northern part of Jordan, Irbid city. To attain this target, several laboratory tests including Atterberg limits, standard proctor compaction, unconfined compression strength (UCS), and swell test were carried to compare the effect of adding different percentages of the formalin aqueous waste on the natural and the treated soil. The results showed that the used formalin improves the engineering properties of the expansive soil used in this study by increased the UCS, dry unite weight (γ d), reducing the swelling potential. Therefore, it can be considered as a good stabilizing agent for soil at different percentages.
Arabian Journal of Geosciences, 2022
In this study, the effect of the quasi rate of loading in the crushing of black tough sand will b... more In this study, the effect of the quasi rate of loading in the crushing of black tough sand will be studied experimentally. The experimental works will be conducted at different normal stresses, different relative densities, and different rates of loading using the direct shear tests. All test specimens were prepared with uniformly graded sand, passing sieve #4, and retained sieve #8.The results of direct shear tests were used to investigate the factors influencing the amount of particle breakage and consequently the friction angle. After shearing of each specimen, sieve analysis was performed in order to determine the percentage of particle breakage. Results showed that the rate of loading in direct shear plays a significant role in the amount of crushing and in internal friction angles. The amount of crushing as well as shear strength was increased with the increased rate of loading. Moreover, microstructural analysis used scanning electron microscopy (SEM) analysis shown that the ...
KSCE Journal of Civil Engineering, 2021
The influence of pozzolanic materials on calcium-based soil stabilization technique has recently ... more The influence of pozzolanic materials on calcium-based soil stabilization technique has recently attracted researchers’ attention as such materials may catalyze the occurrence of pozzolanic reactions due to their high SiO2 and AL2O3 content. In this study, the effect of adding natural zeolite, which is a common pozzolanic material, on soil stabilized with cement kiln dust (CKD) is investigated. The optimal CKD content was determined by conducting tests on soil treated with percentages of CKD (0%, 2%, 4%, 6%, 8%, 10%, and 12%), and then, the optimal CKD treatment was applied on soil replaced by different zeolite percentages (1%, 3%, 5%, 10%, and 15%). Atterberg limits, swelling, California bearing ratio and unconfined compression tests were performed on all samples to evaluate the performance of additives in stabilization. Unconfined compression test samples were cured for 0, 7, 14 and 28 days to study the effect of time. Addition of CKD resulted in reduction of soil swelling and a significant increase in the long-term strength to an optimum of 10% that resulted in 3-folds of strength value higher than the based soil. Addition of 15% natural zeolite to the optimized CKD stabilized soil, caused 21% increase of strength higher than that with CKD optimized soil, however the swelling is only slightly reduced.
Procedia Manufacturing, 2020
The main purpose of this research is to investigate the impact of disposing commonly used deterge... more The main purpose of this research is to investigate the impact of disposing commonly used detergents, namely Sodium Hypo-Chlorite, with a commercial name (Clorox), and Quaternary Ammonium Chloride commercially, known as (Flash), to soil on some of the geotechnical properties of different soils selected from three different locations in the northern part of Jordan. To achieve the goal of this research, two cohesive soils (Soil I and II) were selected. The initial physical properties of the selected soils including optimum moisture content, maximum dry density, grain size distribution, and cohesive soils unconfined compression tests were determined. Several samples were prepared by mixing the soil with different percentages of detergents (Clorox and Flash) and their effects were studied by conducting different experiments such as the modified proctor compaction test, the unconfined test and Atterberg limits test. The results indicated that as the percentage of detergents increased, th...
Journal of Materials in Civil Engineering, 2022
International Journal of Geotechnical Engineering, 2021
ABSTRACT The work presented in this paper aimed at investigating soil stratification and flow mov... more ABSTRACT The work presented in this paper aimed at investigating soil stratification and flow movement direction effects on the equivalent normal coefficient of permeability,(keq)n , of a layered soil system following the “falling head” permeability test procedure. A special mold capable of measuring the permeability of layered soil systems was manufactured. Downward flow, horizontal flow and upward flow have been considered. Experimental results showed that the order of soil layers has a significant contribution to the deviation between the experimental and the theoretical values of the equivalent coefficient of permeability. Greater deviations have been observed when the ratio of the inlet layer coefficients of permeability to the exit layer coefficient of permeability exceeds 1.0. A minor effect on the equivalent coefficient of permeability was noticed for the direction of flow movement. Moreover, an empirical formula capable of predicting the experimental coefficient of permeability value was presented herein.
World Journal of Engineering, 2018
Purpose The purpose of this paper is to evaluate the possible use of oil shale as a soil stabiliz... more Purpose The purpose of this paper is to evaluate the possible use of oil shale as a soil stabilizing agent for expansive soils. Design/methodology/approach An experimental work has been fulfilled to investigate the influence of oil shale ash (OSA) on the geotechnical behavior of the expansive soil of Irbid, Jordan. Three swelling-shrinkage soils were considered in this study along with various percentages of OSA varying at 2, 4, 6, 8, 10 and 12 per cent by dry weight of the soil. A series of laboratory tests were conducted on the soil samples before and after mixing it with OSA. These tests were soil classification, Atterberg limits, compaction test, falling head permeability test, unconfined compression test, free swelling, swelling pressure and California bearing ratio (CBR) test. Findings Laboratory tests results indicated that OSA is effective in improving the texture and strength of the treated soil by reducing plasticity index, swelling potential and swelling pressure and mode...
Geomechanics and Geoengineering, 2019
Observations derived from updated field test databases indicate that total axial pile capacity of... more Observations derived from updated field test databases indicate that total axial pile capacity of driven piles in sand continues to increase with time long after complete dissipation of excess pore pressure generated by pile driving. The increase in pile capacity with time is attributed to time-dependent increase in shaft capacity which is termed in the literature pile 'set up'. Although, many hypotheses have been proposed in literature, the exact mechanism that governs the observed setup is not yet fully understood and the estimation of the magnitude and rate of driven piles setup remains relying on empirical relationships derived from widely scattered data. In this paper, a new hypothesis is introduced which attributes the observed setup to the recovery of the soil surrounding the pile shaft from the friction fatigue processes induced during pile driving and a new methodology is formulated for the estimation of the magnitude and rate of driven pile setup in cohessionless soil. Comparison of predicted and measured shaft friction capacities of some welldocumented field cases comprising previously untested piles indicates acceptable results and suggests that the proposed approach can be used to estimate long time setup of driven piles in sand.
International Review of Civil Engineering (IRECE), 2019
The main purpose of this article is to investigate the possibility of improving expansive soils p... more The main purpose of this article is to investigate the possibility of improving expansive soils properties using different additives, cement, lime, and a combination of lime and cement. An experimental program has been carried out on expansive clayey samples taken from Irbid, Jordan. Cement, lime and cement-lime mixture have been added as percentages by dry weight of the soil at ratios of (3%, 5%, 8% and 12%). Different geotechnical properties including Atterberg limits, compaction test, unconfined compressive strength (UCS) and California bearing ratio (CBR) have been tested before and after using the additives. Free swelling and swelling pressure have been examined before and after after using the additives at no curing, after seven days curing and after 28 days curing. It is shown that, upon adding (cement, lime), the plasticity index and the swelling potential have decreased while the unconfined compressive strength (qu) and the maximum dry density (γd-max.) have increased. Also, the curing time increase is accompanied with a significant enhancement on the compressive strength (UCS) of the treated soil. It has also been noticed that the cement-lime mix (6% cement and 6% lime) has resulted in a noticeable improvement for the expansive soil used in this research over other additive percentages.
journal of Engineering Science and Technology Review, 2018
The effectiveness of stabilizing expansive soil by enhancing its geotechnical properties using ca... more The effectiveness of stabilizing expansive soil by enhancing its geotechnical properties using calcium chloride dehydrate (CaCl 2 .2H 2 O) as a soil stabilizing agent was investigated in this research. The chemical treatment process using calcium chloride elaborates carrying out experimental laboratory tests on an expansive soil taken from eastern side of Irbid city (Jordan) to check the influence of calcium chloride on its geotechnical engineering properties. Calcium chloride (CaCl 2) was added as a solution of 1.0 N concentration with 3:1 solution to soil ratio and soaked to allow for the occurrence of chemical reaction. The main soil properties studied in this work were the consistency limits, maximum dry density, optimum moisture content, the unconfined compression strength of the soil, swelling percentage, swell pressure and the Californian bearing ration test (CBR). Tests results, at different curing time, revealed that calcium chloride can be considered as a good stabilizing agent for expansive soil since its use displayed a significant reduction in swelling potential (80%) and swelling pressure (50%) after 28 of curing. Also, the use of CaCl 2 enhances soil strength properties by increasing the unconfined compression strength (q u), increasing the maximum dry unit weight (γ d−max .) and increasing the CBR from 2.11 % to 8.32 %.