Effect of Various Proportions of Rice Husk Powder on Swelling Soil from New Cairo City, Egypt

Sakr, Mohamed A. H.; Omar, Ali E.; Ene, Antoaneta; Hanfi, Mohamed Y.

doi:10.3390/app12031616

Cited by 9 publications

(5 citation statements)

References 20 publications

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“…The most significant decrease in SPs occurred in soils treated with 5% PC ash. This observation in this study agrees with Sakr et al 2022 when different proportions of dry-weight proportions of rice husk powder were applied to treated soils and significantly reduced the swelling potential of the treated soils. The SP results of the treated soils in this present study were consistent with the results obtained for the maximum dry density (MDD), plasticity index (PI), and linear shrinkage (LI) of the PC ash-treated soils at different PC ash contents.…”

Section: One-dimensional Swellsupporting

confidence: 91%

Pine cone ash stabilization of expansive soils

2024

Global NEST: The International Journal

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<p>The use of appropriate waste materials to stabilize problematic soils, such as expansive soils that are responsible for geotechnical damage, is a common practice in geotechnical engineering. This study presents the use of pulverized ash from the combustion of pine cone (PC) waste as a stabilizing agent to improve the engineering properties of expansive soils. A series of laboratory tests were carried out to examine the effect of different percentages of pine cone ash (PCA) content (3%, 5%, 7%, and 10%) on the Atterberg limits, swelling potential (Sp), linear shrinkage, compressibility, and unconfined compressive strength (qu) of naturally occurring swelling soils and the PC ash-treated soils. The results showed that PC ash contents of 5% and 7% contributed to a significant reduction in the swelling and shrinkage potential and an improvement in the coarsest texture, brittleness behavior, compaction properties, and compressive strength of the treated soils. Conversely, PC ash contents below 3% and above 7% showed minimal changes in the index and engineering properties of the PC ash-treated soils. In particular, the PC ash content of 5% resulted in optimal mitigation of the poor properties of the treated soils. The use of pine cone ash as a stabilizing agent represents a suitable and complementary subgrade soil material for expansive soils on which lightweight structures are built.</p>

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Section: One-dimensional Swellsupporting

confidence: 91%

Pine cone ash stabilization of expansive soils

2024

Global NEST: The International Journal

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“…The importance of nano-additives in soil stabilization was described in existing research 24 , 25 . Sakr et al 28 evaluated the role of rice husk powder as a case study in swelling soil.…”

Section: Introductionmentioning

confidence: 99%

“…According to a literature review, no research has been conducted on the preparation of nano-additives without the contribution of chemicals using lower cost and energy by mechanical methods. The most studies have been used powder particles in soil stabilization 2 – 25 , 27 , 28 . The lack of research on the effects of the powder base of micro- and nano- additives on soils led this study to examine the effect of soil stabilization by micro-bentonite and nano-bentonite using the suspension method.…”

Section: Introductionmentioning

confidence: 99%

Micro- and nano- bentonite to improve the strength of clayey sand as a nano soil-improvement technique

Cheraghalikhani,

Niroumand,

Balachowski

2023

Sci Rep

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Nano-additives results in the formation of nano-cementation (NC). This process is recently used to improve the durability of various building materials. NC used to improve the strength of untreated soil materials, also known as nano soil-improvement (NSI). In few years, the role of nano-additives in various types of soils were developed. In this research, the role of micro- and nano- size of bentonite as soil stabilizer was evaluated as first few research to improve geotechnical properties of soils. Nano-additives prepared by micro- and nano- sizes of bentonite were blend with four formulations. These formulations of micro- and nano- additives at concentrations of 0, 1, 2, and 3%, namely 0% Micro-Bentonite, 1% Micro-Bentonite, 2% Micro-Bentonite, 3% Micro-Bentonite, 0% Nano-Bentonite, 1% Nano-Bentonite, 2% Nano-Bentonite, and 3% Nano-Bentonite, respectively. These formulations of micro- and nano- additives were separately added to soil. Specimens with 3% nano-bentonite showed significant improvement in unconfined compressive strength (UCS) of soil that was more than 2.3-times higher than control specimen in 7-d curing time. Also the performance of micro-bentonite resulted in improvement in UCS of soil that was more than 1.1-times higher than control specimen at 7-d curing time. The secant modulus at 50% of peak stress (E50) of the samples treated with micro- and nano- additives increased in comparison to untreated specimens. Further, X-ray fluorescence (XRF), scanning electron microscopy, and X-ray diffraction analyses characterized micro- and nano- structures of soil specimens, and showed the performance of nano-additives in improving strength of soils. Results show that nano-bentonite as a type of nano-additives is an effective means of increasing the strength of soils. This research shows the significant of nano-bentonite in soil improvement, as a NSI technique.

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“…On the planet, many arid areas are close to oceans, rivers, or freshwater saline lakes. Earlier, numerous studies on enhancing the characteristics of susceptible soils were carried out using several other stabilizers such as Ca 2 CO 3 , gypsum, cement and cement kiln mud, cement kiln dust CKD, ash flay oil, lime and marble powder, and rice husk powder as done in works by Miller and Azad (2000), Muntohar and Hantoro (2000), López and Castaňo (2001), Al-Malak et al (2016), Al-Amoudi et al (2017, Rouaiguia and Abd El Aal (2020), Sakr et al (2021;2022a), etc.…”

Section: Introductionmentioning

confidence: 99%

Geotechnical aspects of alluvial soils at different depths under sodium chloride action in Najran region, Saudi Arabia: Field supported by laboratory tests

Aal

Abdullah

Zakaly

et al. 2023

Front. Environ. Sci.

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The current research study is aimed at studying the impact of sodium chloride on the performance of semi-arid soils in the Najran area of Saudi Arabia. Experimental work has been undertaken to investigate how adding salt to the semi-arid soil collected in the Najran area affects the boundaries of Atterberg, compaction characteristics, California bearing ratio, and shear strength. All testing was conducted on soil samples from different zones of the Najran area at varying depths of 1.5, 3, and 4.5 m along the soil profiles. The soil samples were analyzed individually and then compared with the same soil samples mixed with NaCl at different percentages of 5, 10, and 20% by weight of the dry soil. Using advanced techniques, such as the scanning electron microscope, energy dispersive x-ray analysis, and X-ray diffraction analysis, the stabilization process was examined. The findings revealed that NaCl significantly impacts the geotechnical characteristics of semi-arid soils. The maximum dry density increased from 1.995, 1.93, and 1.96 to 2.02, 1.99, and 2.03 g/cm3, and the optimal water content decreased from 9.47, 13.7, and 11.29 to 7.01, 9.58%, and 8.09% with 20% NaCl added at various depths, respectively. Shear resistance parameters were improved by adding 20% NaCl, where the soil cohesion increased from 0.1333, 0.0872, and 0.0533 to 0.1843, 0.1034, and 0.0372 kg/cm2, and the angle of internal friction increased from 24°, 25.5°, and 29° to 27.8°, 30°, and 33°, respectively. The liquid and plastic limits and, in turn, the plasticity index reduced as the added percentage of NaCl increased. Furthermore, the California bearing ratio percentages significantly increased and reached more than 50%. As a result, it is established that NaCl is an excellent stabilizer, especially at 20% concentration, and might be used as a sub-base substance in highway construction.

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Effect of Various Proportions of Rice Husk Powder on Swelling Soil from New Cairo City, Egypt

Cited by 9 publications

References 20 publications

Pine cone ash stabilization of expansive soils

Pine cone ash stabilization of expansive soils

Micro- and nano- bentonite to improve the strength of clayey sand as a nano soil-improvement technique

Geotechnical aspects of alluvial soils at different depths under sodium chloride action in Najran region, Saudi Arabia: Field supported by laboratory tests

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