Effect of Waterproofed Nano-silica on Some Engineering Properties of Gypseous Soil
الشريط الجانبي للمقالة
محتوى المقالة الرئيسي
الملخص
Gypsum soils are prevalent worldwide, and their primary engineering challenge lies in the loss of mechanical properties upon exposure to water due to the dissolution of the gypsum bond. Many previous studies have explored various additives to improve this soil type; among these, nanomaterials have emerged as promising candidates for enhancing the geotechnical properties of soil. This study compares the effects of adding different proportions of regular (hydrophilic) nano-silica and waterproof (hydrophobic) nano-silica to gypseous soil with varying gypsum contents (13%, 30%, and 45%). Laboratory tests were conducted on both semi-dry and submerged disturbed samples, including direct shear, collapsibility, and water absorption tests. For the semi-dry case, and in comparison to untreated samples, the cohesion of hydrophilic and hydrophobic nano-silica-treated soil showed improvement, reaching up to 112% and 30%, respectively. The angle of internal friction has lower sensitivity to the above additives with increases of 11% and 10%, respectively. However, for the soaked state, the soil cohesion decreased with the increase in the hydrophilic nano-silica ratio, whereas it improved by up to 70% for the waterproofed one. Interestingly, the angle of internal friction reached 53% and 54%, respectively. Regarding the collapsibility coefficient and water absorption, the nano-silica-treated soil exhibited contrasting behavior. Hydrophilic nano-silica increased the collapsibility coefficient and water absorption with increasing addition, while waterproof nano-silica showed significant improvements, resulting in a reduction of 5% to 59% in the collapsibility coefficient and a decrease in water absorption. These results suggest using hydrophobic (waterproofed) nano-silica instead of hydrophilic one to improve the engineering characteristics of gypseous soil.
تفاصيل المقالة
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المراجع
Olinic E, Ivasuc T, Manea S. Mechanical Behavior of Destructurated Expansive Clay. International Multidisciplinary Scientific GeoConference: SGEM 2014; 2: 581–588.
Patel A. Geotechnical Investigations and Improvement of Ground Conditions. Woodhead Publishing; 2019.
Al-Abdullah SF, Al-Dulaimi NSM. Characteristics of Gypseous Soils Treated with Calcium Chloride Solution. Journal of Engineering 2006; 12(3): 681–692.
Al-Mohammadi NM, Nashat IH, Bako GY. Compressibility and Collapsibility of Gypseous Soils. Ministry of Housing and Construction, NCCL, Baghdad; 1987.
Athanasopoulou A. Addition of Lime and Fly Ash to Improve Highway Subgrade Soils. Journal of Materials in Civil Engineering 2014; 26(4): 773–775.
Eberemu AO, Tukka DD, Osinubi KJ. Potential Use of Rice Husk Ash in the Stabilization and Solidification of Lateritic Soil Contaminated with Tannery Effluent. *Geo-Congress 2014: Geo-characterization and Modeling for Sustainability*; 2014; pp. 2263–2272.
Edeh JE, Agbede IO, Tyoyila A. Evaluation of Sawdust Ash–Stabilized Lateritic Soil as Highway Pavement Material. Journal of Materials in Civil Engineering 2014; 26(2): 367–373.
Hamad AM, Jassam MG. A Comparative Study for the Effect of Some Petroleum Products on the Engineering Properties of Gypseous Soils. Tikrit Journal of Engineering Sciences 2022; 29(3): 1–9.
Brar SK, Verma M, Tyagi RD, Surampalli RY. Engineered Nanoparticles in Wastewater and Wastewater Sludge–Evidence and Impacts. Waste Management 2010; 30(3): 504–520.
Ibrahim RK, Hamid R, Taha MR. Fire Resistance of High-Volume Fly Ash Mortars with Nanosilica Addition. Construction and Building Materials 2012; 36: 779–786.
Adnan E, Al Waily MJ, Jawad ZF. A Review Study on the Effect of Nanomaterials and Local Materials on Soil Geotechnical Properties. E3S Web of Conferences 2023; 427: 01010.
Ghasabkolaei N, Choobbasti AJ, Roshan N, Ghasemi SE. Geotechnical Properties of the Soils Modified with Nanomaterials: A Comprehensive Review. Archives of Civil and Mechanical Engineering 2017; 17(3): 639–650.
Sridharan A, Nagaraj HB. Plastic Limit and Compaction Characteristics of Fine-Grained Soils. Ground Improvement 2005; 9(1): 17–22.
Olarewaju AJ, Balogun MO, Akinlolu SO. Suitability of Eggshell Stabilized Lateritic Soil as Subgrade Material for Road Construction. Electronic Journal of Geotechnical Engineering 2011; 16: 899–908.
Taha MR. Recent Developments in Nanomaterials for Geotechnical and Geo-Environmental Engineering. MATEC Web of Conferences 2018; 149: 02001.
Majeed ZH, Taha MR, Jawad IT. Stabilization of Soft Soil Using Nanomaterials. Research Journal of Applied Sciences, Engineering and Technology 2014; 8(4): 503–509.
Ghasabkolaei N, Choobbasti AJ, Roshan N, Ghasemi SE. Geotechnical Properties of the Soils Modified with Nanomaterials: A Comprehensive Review. Archives of Civil and Mechanical Engineering 2017; 17(3): 639–650.
Shokatabad RB, Toufigh V, Toufigh MM. Stabilization of Sandy Soil with Geopolymers Based on Nanomaterials and Taftan Pozzolan. Amirkabir Journal of Civil Engineering 2020; 52(9): 579–582.
Chandan NSK, Sharma DD. Stabilization of Expansive Soil Using Nanomaterials. Proceedings of the International Interdisciplinary Conference on Science Technology Engineering Management Pharmacy and Humanities; 2017; Singapore.
Al-Swaidani AM, Hammoud I, Al-Ghuraibi I, Mezyab A. Nanocalcined Clay and Nano-Lime as Stabilizing Agent for Expansive Clayey Soil: Some Geotechnical Properties. Advances in Civil Engineering Materials 2019; 8(3): 327–345.
Firoozia AA, Najib M, Firoozi AA. Stabilization Expansive Clayey with Nano-Lime to Reduce Environmental Impact. Jurnal Kejuruteraan 2022; 34(6): 1085–1091.
Al-Obaidi AA, Al-Mukhtar MT, Al-Dikhil OM, Hannona SQ. Comparative Study Between Silica Fume and Nano Silica Fume in Improving the Shear Strength and Collapsibility of Highly Gypseous Soil. Tikrit Journal of Engineering Sciences 2020; 27(1): 72–78.
Karkush MO, Al-Murshedi AD, Karim HH. Investigation of the Impacts of Nano-Clay on the Collapse Potential and Geotechnical Properties of Gypseous Soils. Jordan Journal of Civil Engineering 2020; 14(4): 537–547.
Hayal AL, Al-Gharrawi AMB, Fattah MY. Collapse Problem Treatment of Gypseous Soil by Nanomaterials. International Journal of Engineering 2020; 33(9): 1737–1742.
Al-Murshedi AD, Karkush MO, Karim HH. Collapsibility and Shear Strength of Gypseous Soil Improved by Nano Silica Fume (NSF). Key Engineering Materials 2020; 857: 292–301.
ASTM D3080/D3080M-11. Standard Test Method for Direct Shear Test of Soils Under Consolidated Drained Conditions. ASTM International, West Conshohocken, PA; 2011.
Awn SH. A Modified Collapse Test for Gypseous Soils. Diyala Journal of Engineering Sciences 2010; 3(1): 299–309.
ASTM D4546-14. Standard Test Methods for One-Dimensional Swell or Collapse of Cohesive Soils. ASTM International, West Conshohocken, PA; 2014.
ASTM D2216-19. Standard Test Methods for Laboratory Determination of Water (Moisture) Content of Soil and Rock by Mass. ASTM International, West Conshohocken, PA; 2019.