Use of Phosphoric Acid and Rice Hulk Ash as Lateritic Soil Stabilizers for Paving Applications

Silva, Angelo Magno dos Santos e; Pascoal, Paula Taiane; Baroni, Magnos; Vargas, Alexandre Silva de; Budny, Jaelson; Specht, Luciano Pivoto

doi:10.3390/su15097160

Cited by 3 publications

(3 citation statements)

References 43 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…After conducting a comparative analysis of the findings obtained in the current study and previous studies, it was seen that there exist notable resemblances between the outcomes of the current investigation and previous scholarly inquiries RHA-UCS pertaining to RAH. Previous studies have utilized rice husk ash as a sole component, with a ratio ranging from 10%-15% depending on the soil type [17,[29][30][31][32]. However, another study has found that a 10% proportion of rice husk ash as a partial replacement for cement in aerated concrete yields beneficial effects on the strength and durability properties of the concrete.…”

Section: Figure 10 Mixture Effect On the Ucsmentioning

confidence: 99%

Enhancing Soil with Low-Cost Pozzolanic Materials: Rice Husk Ash and Groundnut Shell Ash Compared to Cement

Abdulrahman,

Al-Kaream,

Ihsan

2024

MMEP

View full text Add to dashboard Cite

This study investigates whether low-cost pozzolanic materials such as rice husk ash, groundnut shell ash can improvement soil used in the study that are classified as Lowplasticity clays (cl) and activity of it equal to 1.05 as a replacement for traditional, costly additives. the percentage are used be 4%, 6%, 8%, and 10% of weight soil for each additive. chemical properties were studied for rice husk ash, groundnut shell ash, and cement Portland such as CaO, SiO2, Al2O3, Fe2O3, MgO, K2O, and Na2O. Also, preand post-mixture soil was tested for Atterberg's Limit, Activity, Shrinkage Limit, Clay value, Proctor Standard Compaction, and Unconfined Compressive Strength. Untreated soil samples were compared to treated ones. Adding 8% cement OPC, 10% groundnut shell ash, and 10% rice husk ash enhanced soil cohesiveness from 21 to 57.5, 52, and 45 kPa, respectively, also the optimal soil moisture content dropped from 15% to 8%, 10.5%, and 10% for mixes. Increased mixer percentages lead to reduced maximum dry unit weight and optimized water content. Based on these observations aims to develop effective solutions for treatment expensive soil in engineering and construction projects.

show abstract

Section: Figure 10 Mixture Effect On the Ucsmentioning

confidence: 99%

Enhancing Soil with Low-Cost Pozzolanic Materials: Rice Husk Ash and Groundnut Shell Ash Compared to Cement

Abdulrahman,

Al-Kaream,

Ihsan

2024

MMEP

View full text Add to dashboard Cite

show abstract

“…The enhanced strength and stiffness of the soil, even after short-term curing, were attributed to the hydration reactions of calcium-rich PFA, leading to the formation of stable cementitious compounds. Silva et al (2023) investigated rice husk ash (RHA) as a stabilizing additive for lateritic soil [14]. Their research emphasized the combined effect of RHA and phosphoric acid on the soil's resilient behavior and compressive strength.…”

Section: Introductionmentioning

confidence: 99%

Analysis of the Mechanical Properties of a Stabilized Subgrade Type Soil under a Sustainable Approach for Construction

Gallego-Quintana,

Ojeda-Farias,

Alvarez-Rosario

et al. 2023

Materials

View full text Add to dashboard Cite

This article presents an experimental study to analyze the mechanical properties of a soil stabilized with ordinary Portland cement (OPC) under a sustainable approach consisting of a significant substitution of OPC for sugarcane bagasse ash (SCBA) to reduce the quantity of cement used in the stabilization, reaching the necessary mechanical requirements for its use as a subgrade layer. Soil specimens were elaborated with 3%, 5%, and 7% OPC as a stabilizing agent by weight of the soil. These mixtures were then partially substituted with 25%, 50%, and 75% SCBA, with these percentages being by weight of the stabilizer (OPC). Compaction, compressive strength, and California bearing ratio (CBR) tests were performed to evaluate the mechanical properties of the specimens. The results indicate that a 25% substitution of OPC by SCBA shows a similar performance to the mixture with only Portland cement, so a reduction in OPC use can be made. Further, with a substitution of 100% OPC by SCBA, the CBR of natural soil without stabilizers is improved.

show abstract

“…The selection of additive type mainly relies on soil characteristics, environmental climate, the aim of the improvement, environmental benefits, and cost-effectiveness [7]. Calcium-based conventional binders such as cement, lime, and fly ash are widely used in soil stabilization [8][9][10][11][12]. However, as the sulfate concentration in the environment increases, these materials allow the formation of harmful minerals such as ettringite and thausamatite, thus negatively affecting the soil strength.…”

Section: Introductionmentioning

confidence: 99%

Effect of Olivine Additive on the Shear Resistance of Fine-Grained Soils: A Sustainable Approach for Risk Mitigation and Environmental Impact Reduction

Tahir,

Sert

2023

Sustainability

View full text Add to dashboard Cite

Increasing urbanization has also accelerated the potential risks of hazards arising from problematic soils. At this end, it becomes inevitable to apply soil improvement methods, which are the most applicable and economical methods. Increasing the strength of clays, especially in undrained conditions where they exhibit low shear resistance, is essential for mitigating soil-induced hazards. This study aimed to improve the shear resistance of clays with a waste material named olivine, which has rarely been used in soils before. The undrained shear strength of the samples prepared at different curing times was determined at various confining pressures. Both olivine-added and potassium hydroxide (KOH)-activated olivine-added samples were tested in the same manner. It was proven that the olivine contribution alone was not sufficient over time, and higher shear resistance was obtained when olivine was activated with KOH. The samples treated with only olivine added to the resistance with olivine grains, whereas the samples activated with KOH added resistance with both olivine grains and chemical bonds up to a rate of 521% in the case of 20% olivine being used. Morphological and mineralogical analyses were performed to analyze the chemical bonds formed after the reaction. Stabilization with olivine substitutes a sustainable method of improvement that provides benefits such as reducing carbon dioxide emissions and controlling waste.

show abstract

Use of Phosphoric Acid and Rice Hulk Ash as Lateritic Soil Stabilizers for Paving Applications

Cited by 3 publications

References 43 publications

Enhancing Soil with Low-Cost Pozzolanic Materials: Rice Husk Ash and Groundnut Shell Ash Compared to Cement

Enhancing Soil with Low-Cost Pozzolanic Materials: Rice Husk Ash and Groundnut Shell Ash Compared to Cement

Analysis of the Mechanical Properties of a Stabilized Subgrade Type Soil under a Sustainable Approach for Construction

Effect of Olivine Additive on the Shear Resistance of Fine-Grained Soils: A Sustainable Approach for Risk Mitigation and Environmental Impact Reduction

Contact Info

Product

Resources

About