Soil Stabilization Methods Research Articles

Field investigation of the feasibility of MICP for Mitigating Natural Rainfall-Induced erosion in gravelly clay slope

Rainfall-induced erosion on slopes is a prevalent natural process leading to soil loss. One promising application of microbially induced carbonate precipitation (MICP) is to mitigate rainfall-induced erosion. Conducting field tests is an essential step to verify and improve its performance. In the current work, field tests were conducted to assess the feasibility of using MICP to mitigate rainfall-induced erosion on a gravelly clay slope in Longyan, Fujian, China. A temporary laboratory was set up to cultivate bacteria, and a non-sterilizing method was employed to prepare large volumes of bacterial suspensions in a single batch. Slopes were treated by spraying solutions onto their surfaces. The amount of discharged soils and 3D surface scanning results were used for evaluating the erosion intensity of the slopes. The results demonstrated that the method could effectively mitigate the surface erosion caused by natural rainfall and prevent erosion-induced collapse. Notably, approximately one year after the treatment, the grass had started to grow on the heavily cemented slope, indicating that the MICP method is both effective and eco-friendly for soil stabilization method. However, further improvements are needed to enhance the uniformity and long-term durability of the MICP treatment.

Stabilization of Pavement Subgrade Clay Soil Using Sugarcane Ash and Lime

Soft to medium clay soil possesses major sources of damages to the pavement layers overlying them because of their potential failure under moisture changes and external heavy traffic load. In such situations, soil stabilization methods can be used to improve the soil properties and satisfy the desired engineering requirements. This study presents the use of sugarcane bagasse ash (SBA) and lime as chemical stabilizers for a clay soil subbase. Sugarcane bagasse ash and lime are used individually and as mixtures at varying percentages to stabilize a clay soil from Taxila, Pakistan. Various geotechnical laboratory tests such as Atterberg limits, compaction test, and California Bearing Ratio (CBR) are carried out on both pure and stabilized soils. These tests are performed at 2.5%, 5%, and 7.5% of either SBA or lime by weight of dry soil. In addition, mixtures of lime and SBA in ratios of 1:1, 2:1, 3:1, 1:2, and 1:3 are used in 5%, 7.5%, and 10% of dry soil weight, respectively. Results indicate that soil improved with 7.5% SBA showed a 28% increase in the liquid limit, while soil mixed with 2.5% lime in combination with 7.5% SBA showed an increase of 40% in the plastic limit. For the plasticity index, the soil mixed with 7.5% SBA showed an increase of 42%. Moreover, 2.5% lime in combination with 2.5% SBA showed the best improvement in soil consistency as this mixture reduced the soil plasticity from high to low according to the plasticity chart. Furthermore, 2.5% SBA in combination with 5% lime demonstrated the largest improvement on the CBR value, which is about a 69% increase above that of the pure soil. Finally, the cost analysis indicates a promising improvement method that reduces pavement cost, increases design life, and mitigates issues of energy consumption and pollution related to SBA as a solid waste material.

Ecofriendly solidification of sand using microbially induced calcium phosphate precipitation

This study introduces microbiologically induced calcium phosphate precipitation (MICPP) as a novel and environmentally sustainable method of soil stabilization. Using Limosilactobacillus sp., especially NBRC 14511 and fish bone solution (FBS) extracted from Tuna fish bones, the study was aimed at testing the feasibility of calcium phosphate compounds (CPCs) deposition and sand stabilization. Dynamic changes in pH and calcium ion (Ca2+) concentration during the precipitation experiments affected the precipitation and sequential conversion of dicalcium phosphate dihydrate (DCPD) to hydroxyapatite (HAp), which was confirmed by XRD and SEM analysis. Sand solidification experiments demonstrated improvements in unconfined compressive strength (UCS), especially at higher Urea/Ca2+ ratios. The UCS values obtained were 10.35 MPa at a ratio of 2.0, 3.34 MPa at a ratio of 1.0, and 0.43 MPa at a ratio of 0.5, highlighting the advantages of MICPP over traditional methods. Microstructural analysis further clarified the mineral composition, demonstrating the potential of MICPP in environmentally friendly soil engineering. The study highlights the promise of MICPP for sustainable soil stabilization, offering improved mechanical properties and reducing environmental impact, paving the way for novel geotechnical practices.

Stabilization of Loose Soils as Part of Sustainable Development of Road Infrastructure

In the context of growing demand for road infrastructure expansion, sustainability is of key importance. Enhancing road construction technology ensures efficient, durable transportation infrastructure, vital for economic growth. Responsible road construction, especially in areas of historical and environmental significance, is essential. Preserving ecosystems and local heritage in road planning protects valuable areas and supports regional sustainability. Rural roads, often in forested areas, should maintain natural aesthetics. Economic challenges require flexible, efficient roads. Many existing unpaved roads, especially in rural and forest environments, fail to meet increasing traffic and load of heavy agricultural and maintenance vehicles. Soil stabilization methods, discussed in various publications, offer sustainable solutions. Research on ecofriendly binding additives provides the opportunity to reduce cement consumption and CO2 emissions. Such innovations enhance road efficiency, reduce maintenance costs, and benefit the environment. Investing in modern road technologies mitigates climate change effects by reducing emissions and protecting ecosystems. Our research indicates that soil stabilization technologies significantly improve road strength and durability. Additives can increase compressive strength by over 50% with minimal cement content. Continued research into road quality and durability is vital for sustainable transport infrastructure development. The results presented in this paper were obtained after two periods of solidification: after 7 and 30 days, with three types of ads (ion-exchangeable, chemical, and polymeric) to cement. In all tests, compaction strength improved by at least 35% in samples with the lowest cement content.

Performance of Nickel Slag as a Stabilization Material for Soft Soil

The chemical soil stabilization method is an effort to improve soil bearing capacity according to soil work specifications in construction. The use of conventional stabilization materials, such as cement and lime, is considered environmentally unfriendly. Utilizing by-products from the mining industry becomes an alternative that can be developed in soil improvement efforts. This research aims to examine the influence of nickel slag on the enhancement of soil bearing capacity as observed through its unconfined compressive strength value. In this study, the concentration of added nickel slag as a stabilization material is 3%, 6%, 9%, and 12% by dry soil weight. The test specimens used are cylinders with a diameter of 5 cm and a height of 10 cm. Unconfined compressive strength testing is conducted after the specimens are cured for 14 days. The results of this study indicate that the clay soil used is classified as organic clay with high plasticity based on the USCS classification, with an unconfined compressive strength value of 0.2 kg/cm2. The addition of nickel slag with concentrations of 3%, 6%, 9%, and 12% results in respective increases in unconfined compressive strength by 46%, 50%, 68%, and 47%. These findings demonstrate that the optimum nickel slag content of 6% provides the maximum unconfined compressive strength. Therefore, it can be concluded that nickel slag, as a source of silica, has the potential to be used as an alternative material in soft soil improvement.

Harnessing microbes for self-healing concrete – A review

This review explores the burgeoning field of microbially enhanced construction materials, with a special focus on self-healing concrete, through the lens of microbial biotechnology. Central to this discourse is the innovative use of bacteria, particularly Bacillus species, to address the pervasive issue of microcracks in concrete, a fundamental material in the construction industry. Traditional remedies, such as chemical admixtures and fiber reinforcements, offer partial solutions; however, self-healing concrete represents a paradigm shift, harnessing the natural calcite-precipitating ability of bacteria to autonomously repair cracks, thereby augmenting structural durability and longevity. Delving into the mechanics, the bacteria, embedded within the concrete matrix, remain dormant until crack formation triggers their metabolic pathways, leading to calcite production that effectively seals the fissures. This bio-mediated repair mechanism not only enhances the structural integrity of concrete but also aligns with sustainable construction practices by minimizing maintenance requirements and material wastage. The review extends beyond self-healing phenomena, encompassing broader applications of microbial technology in construction, including bio-concrete, bio-cement, and soil stabilization methods. These applications underscore the versatility of microbes in enhancing material properties such as compressive strength, tensile resilience, and water impermeability. Empirical evidence underscores the necessity of optimizing bacterial dosages and curing conditions to maximize the self-healing efficiency. Future research trajectories should aim to elucidate the complex interactions between microbial agents and concrete matrices, assess long-term performance, and evaluate the environmental and economic sustainability of microbial interventions in construction. The integration of microbial technology in construction materials heralds a new epoch of innovation, offering robust, sustainable, and resilient solutions to enduring challenges in the industry.

The effect of lime and phosphoric acid on the CBR value of soft soil based on curing time

Road construction, both for flexible and rigid pavements, needs to pay attention to the bearing capacity of the subgrade. Especially on soft clay soils. The method to determine the bearing capacity value is through CBR testing in the laboratory. Soft soil has a low bearing capacity, so it cannot accept the load acting on it, such as the soil in the Gedebage area of Bandung. Because the carrying capacity value is decreasing, it is necessary to improve the soil with soil stabilization methods. In this research, stabilization materials will be used in the form of lime with a percentage of 10% and phosphoric acid 5%. Aiming to increase the bearing capacity value of the soil based on the results of laboratory CBR tests with 3, 7, and 14 days of curing, as well as to determine the optimum curing period of the test. Based on the test results, very positive results were obtained because it can increase the soaked CBR of 0.8% and 3% unsoaked for the native soil to 5.6% for soaked and 15.23% for unsoaked CBR in soil that has been stabilized with a 14-day curing period. Thus, these stabilization results meet the minimum requirements for pavement subgrade.

Enhancing mechanical properties of dredged sludge through carbonation stabilization employing steel slag: An eco-friendly and cost-effective approach

Carbonation stabilization presents an efficacious and eco-friendly soil stabilization method with extensive applicability. Because market costs play a crucial role in determining the recycling of dredged sludge, this research investigates the potential use of solid waste steel slag as a cost-effective alternative stabilizing agent. The objective is to promote the wider adoption of carbonation stabilization technology for the reuse of dredged sludge. This investigation examined the alteration patterns of unconfined compressive strength and CO2 uptake in steel slag carbonation stabilized soils (CS) under varying steel slag contents, stabilization moisture contents, and carbonation durations. Furthermore, a detailed analysis of micro-mineral composition and micro-pore structure evolution during the carbonation process was conducted employing X-ray diffraction (XRD), thermogravimetric and derivative thermogravimetric analysis (TG-DTG), and mercury intrusion porosimetry (MIP). The outcomes revealed a positive linear association between the unconfined compressive strength of CS specimens and their CO2 uptake across different steel slag contents and carbonation durations. Through XRD and TG-DTG assessments, the carbonation byproducts in CS specimens were identified as calcite-type CaCO3, with an increasing concentration of CaCO3 correlating with the increase of steel slag content and carbonation duration. MIP testing revealed that a 72-hour carbonation period could diminish the total porosity of steel slag dredged soils from 40.96% to 34.53%. The strength of CS specimens predominantly derives from the carbonation reaction of steel slag, which enhances the soil's mechanical attributes through the cementing and pore-filling impacts of CaCO3 crystal growth on the soil matrix.

A Comprehensive Review on Methods, Agents and Durability Factors for Stabilization of Expansive Soils

Expansive soils cover a huge portion of the total land area in the world. They absorb water and expand, then shrink when they dry out. The volume change exerts pressure on engineering structures causing deformations, cracks, and movement of walls. This has a detrimental ef- fect on serviceability and reduces the service life of structures constructed on expansive soil. Therefore, stabilizing expansive soil is important to lessen the negative characteristics of the soil and improve its general toughness and durability. This paper provides an overview of the methods of soil stabilization, stabilizing agents, testing of stabilized soil, and factors that have an impact on the durability of stabilized soil. The most common stabilizing agents which in- clude lime and Ordinary Portland Cement (OPC) are studied. In addition, eco-friendly stabi- lizers like calcium chloride, sodium chloride, and modern stabilizers like geopolymers, zeo- lites, and nanomaterials are thoroughly discussed in the paper and potential areas for further research are also recommended. The study shows that the type and amount of stabilizer used, as well as the method of soil stabilization employed determines the extent of soil improvement.

Investigation on the microstructural characteristics of lime-stabilized soil after freeze–thaw cycles

Saline soil in Northwest China is susceptible to frequent and severe freeze–thaw cycles (FTC), resulting in railway and pavement disasters, emphasizing the need for stabilizing inadequately constructed soils. The engineering characteristics of soils can be changed after FTCs, which results from the variation of microstructure. Physisorption experiments (BET), mercury intrusion porosimetry (MIP), and scanning electron microscopy (SEM) were employed in this research to investigate how FTCs affected the micro-characteristics of lime-stabilized saline soil. According to the results, at the beginning of FTCs, the specific surface area (SSA) increased and then reduced after 3 FTCs. Moreover, the pores presented a bimodal characteristic and could be divided into inter- and intra-aggregate pores. The pore size distribution of the stabilized saline soil was altered by the FTCs. Additionally, the FTCs reduced the porosity of pores between 2 ∼ 22 μm and increased their complexity, while also creating more directional pore orientation. The results of this paper are believed to help advance soil stabilization methods and offer useful insights into the microstructural characteristics of lime-stabilized saline soil.

Multi-scale analysis of seepage and erosion on collapse accumulation slope

This study focused on the slope surface of debris deposits during the Luwei Sea landslide. Through seepage erosion tests, nuclear magnetic resonance and the coupling of computational fluid dynamics with the discrete element method, the seepage erosion of four representative areas on the slope surface was systematically studied at the macroscopic, mesoscopic and microscopic levels. The results showed that the particle size distribution has a significant impact on the seepage erosion characteristics. When the ratio of soil to rock was higher, soil–rock mixture showed stronger resistance to infiltration and soil protection during seepage erosion. The applied osmotic pressure also affected seepage erosion. However, when the osmotic pressure exceeded a certain critical value, pore blockage became the main mechanism of seepage erosion. Furthermore, a vegetation-based soil stabilization method involving geotechnical reconstruction and material soil stabilization in unvegetated areas was proposed, thereby promoting vegetation growth and enhancing slope stability. Our findings provided effective measures and a strategic theoretical basis for the rehabilitation of mudslide accumulation sites.

Enhancing airport runways performance using composite systems numerically using unit cell concept.

One of the problems, which would affect airport runways is the settlement of soil. Such settlement would be controlled by enhancing the performance of the soil underneath the airport runway. The composite system consists of graded stone-reinforced soil and reinforcing layers. This system is defined as stone column, which is widely used to improve weak soils as one of the soil stabilization methods due to its simple construction and economic cost. It is used to reduce settlement and enhance soil-bearing capacity. By using such technique, part of the high-compressibility and low-shear strength soil is replaced with coarse filler materials with high-shear strength and extremely low compressibility. In this study, a 3D numerical model of a unit cell is created to examine the impact of changing the controlling parameters in the model, i.e. spacing between columns (S), weak soil cohesion (c), and angle of internal friction for stone column material (φ). It was established that the use of stone columns improves the soil-bearing capacity and reduces settlement, strengthening the stability of airport runways. The efficiency of the system is improved by increasing the column material’s internal friction angle and the cohesion of the surrounding soil. The ultimate bearing capacity of soil without SC and SC-soil systems were 150 kPa, and 460 kPa, respectively, which illustrates that the bearing capacity was increased by 306.7%.

Stabilisasi Perbaikan Tanah Lempung di Ruas Jalan Tol Seksi IV Makassar Dengan Metode Grouting

In this study, grouting was carried out with soil lowering so that grouting was carried out in Section IV Makassar Toll Road Section.One of the problems on land that often becomes an obstacle in a construction activity is land subsidence. The purpose of this study was to analyze the physical and mechanical properties of clay soil and to analyze the carrying capacity of the soil and the consolidation settlement value of clay soil after grouting.The soil stabilization method in this study is the grouting method using portland cement and activated lime. The variation to be used is 2 grouting points of a combination of cement and lime with a width of 2 x 2 x 3,5 meters. The diameter of the points is made differently so that the total surface area.

Microstructure Behaviour of the Marine Clay Treated with Geopolymer

Marine clay usually related with poor soil properties, high settlement and instability that are not suitable for engineering requirements and low compressive strength. To solve this problem, chemical stabilizer is one of the soil stabilization method in construction industry which one of them are geopolymer stabilizer to increase the strength of marine clay soil. However, the study regarding of microstructure treated marine clay using geopolymer are less study. Hence, this study focus on the microstructure behaviour of treated marine clay using geopolymer stabilizer. The approach employed in this investigation was the preparation of the sample by the incorporation of marine clay soil and geopolymer (addition of 6% Magnesium Chloride (MgCl2)). The sample was then subjected to several microstructure tests, including X-Ray Diffraction (XRD), Particle Size Analysis, and Scanning Electron Microscopic (SEM). The findings demonstrate the alterations in the microstructural characteristics of marine clay following the application of geopolymer stabilization. According to the results of the XRD analysis, no further peaks were observed. Conversely, the SEM examination revealed a reduction in the voids within the marine clay soil, leading to increased density as the curing period increased. Furthermore, the Particle Size Analysis reveals that the use of a stabilizer results in a notable augmentation in the soil particle sizes. Consequently, This study may be utilized to examine the relationship between the microstructure and mechanical properties of treated soil.

Enhancing the Strength of Mine Residue Soil by Bioremediation Combined with Biopolymers

Traditional soil stabilization methods are usually associated with high energy consumption, carbon emissions, and long-term environmental impact. Recent developments have shown the potential use of bio-based techniques as eco-friendly alternatives for soil stabilization. The present work studies the effects of the addition of the biopolymers xanthan gum (XG) or carboxymethyl cellulose (CMC) to a mine residue soil, combined or not with biostimulation and bioaugmentation techniques, in terms of compressive stress–strain behavior. Unconfined compressive strength (UCS) tests were performed on previously disturbed samples (two cycles of percolation, extraction and homogenization) to evaluate if the biostimulation and bioremediation remain active in a real adverse scenario. The results allowed for us to conclude that both biopolymers, when applied individually (with a content of 1%), are effective stabilizers (CMC allows for unconfined compressive strength increases of up to 109%), showing better results for CMC than Portland cement. The biostimulation of the autochthonous community of the mine residue soil was revealed to be a non-effective technique, even when combined with the biopolymers. However, good results were observed when the bioaugmentation was combined with xanthan gum, with unconfined compressive strength improvements of up to 27%. The study revealed that these bio-based techniques are promising soil engineering techniques, offering environmentally friendly alternatives for sustainable soil stabilization and contributing to a greener and more sustainable future.

Embodied Energy in the Production of Guar and Xanthan Biopolymers and Their Cross-Linking Effect in Enhancing the Geotechnical Properties of Cohesive Soil

Traditional soil stabilization techniques, such as cement and lime, are known for their menacing effect on the environment through heavy carbon emissions. Sustainable soil stabilization methods are grabbing attention, and the utilization of biopolymers is surely one among them. Recent studies proved the efficiency of biopolymers in enhancing the geotechnical properties to meet the requirements of the construction industry. The suitability of biopolymer application in different soils is still unexplored, and the carbon footprint analysis (CFA) of biopolymers is crucial in promoting the biopolymers as a promising sustainable soil stabilization method. This study attempts to investigate the out-turn of cross-linked biopolymer on soils exhibiting different plasticity characteristics (Medium & High compressibility) and to determine the Embodied carbon factor (ECF) for the selected biopolymers. Guar (G) and Xanthan (X) biopolymers were cross-linked at different proportions to enhance the geotechnical properties of soils. Atterberg’s limits, Compaction characteristics, and Unconfined Compressive Strength were chosen as performance indicators, and their values were analyzed at different combinations of biopolymers before and after cross-linking. The test results have shown that Atterberg’s limits of the soils increased with the addition of biopolymers, and it is attributed to the formation of hydrogels in the soil matrix. Compaction test results reveal that the Optimum Moisture Content (OMC) of biopolymer-modified soil increased, and Maximum Dry Density (MDD) reduced due to the resistance offered by hydrogel against compaction effort. Soils amended with biopolymers and cured for 14, 28, and 60 days have shown an appreciable improvement in Unconfined Compressive Strength (UCS) results. Microlevel analysis was carried out using SEM (Scanning Electron Microscopy) and FTIR (Fourier-transform infrared spectroscopy) to formulate the mechanism responsible for the alteration in targeted performance indicators due to the cross-linking of biopolymers in the soil. The embodied energy in the production of both Guar and Xanthan biopolymers was calculated, and the obtained ECF values were 0.087 and 1.67, respectively.

Effect of Zeolite Mixture Percentage on the Free Compressive Strength Test Value of Clay Soil in Pulo Padang Village in Mandailing Natal Regency

High plasticity clay soils which are often encountered in field construction work have low bearing strength and large volume changes (shrinkage expansion). Soil will expand when the pores are filled with water and will shrink in dry conditions. This makes the soil unstable, and it is unable to support a building construction. Therefore, soil improvement efforts are needed to increase this soft clay soil. Soil stabilization is a soil improvement effort to strengthen soil that has low bearing capacity. In this research, the soil stabilization method is carried out using mixed materials to reduce or eliminate the unfavorable properties of the soil to be used. To improve the quality of the soil, zeolite is used. In its utilization, zeolite is able to withstand high heat and can increase the bearing capacity of clay soil. This research was conducted to determine the effect of zeolite addition on the compressive strength value of clay soil. In this study, the percentage of zeolite mixture used was 0%, 2%, 4%, 6%, 8%, and 10%. Based on the research results, the addition of zeolite mixture percentage in clay soil can increase the compressive strength value of the soil where the compressive strength value of the soil increases. However, the increase in soil compressive strength value occurred only until the addition of zeolite by 8% with a compressive strength value of 12.208 kg/cm2. At the time, at the addition of zeolite at 10%, the compressive strength value of the soil decreased to 9.928kg/cm2. Thus, the addition of zeolite can increase the compressive strength value of soil at the maximum addition limit of 8%. So, zeolite can be used as an alternative material for soil stabilization for subgrade layers. Keywords: Clay, Stabilization, Zeolite, Soil compressive strength

Eco-friendly soil stabilization method using fish bone as cement material

The method of soil improvement by calcium phosphate precipitation is a novel, environmentally friendly, and non-toxic technique. Such technology provides advantages over ureolytic induced calcite precipitation (UICP), the most popular and widely used method in the field of geotechnical engineering. In this paper, an investigation of the consolidation of fine and coarse sand samples by enzyme induced calcium phosphate precipitation (EICPP) was carried out. Tuna bones were used as an alternative source of calcium and phosphorus ions, as one of the most popular fish species in Japan and the main source of food industry waste. Unconfined compressive strength (UCS) of the samples after 21 days of daily injection of the solution showed an increase in strength up to 6,05 MPa in fine and up to 4,3 MPa in coarse sand samples. X-ray powder diffraction (XRD), scanning electron microscope (SEM), and energy dispersive X-ray spectroscopy (SEM-EDS) analysis were performed to investigate the nature and type of deposition. Analyses confirmed that deposition is composed of brushite with needle-like crystals in the case of Toyoura sand and flower-like crystals in the case of Mikawa sand. SEM-EDS showed a presence of both, calcium, and phosphorus in the precipitate, indicating the presence of calcium phosphate compounds (CPCs). This study reveals that tuna bones are a rich source of calcium and phosphorus for EICPP, which results in a strengthening of silicate soil up to 3.4–6.05 MPa and is able to reduce ammonia emissions by 85.7 % - 97.5 % compared to UICP.

Effect of incorporating discarded facial mask fiber on mechanical properties of MICP–treated sand

Responding to environmental challenges associated with the waste generated from discarded facial mask fiber (DFMF), this study introduces an innovative approach to integrate DFMF as a beneficial additive to Microbial-induced calcium carbonate precipitation (MICP) technology - an eco-friendly soil stabilization method. Despite its merit of enhancing soil strength and permeability, MICP often incurs substantial soil brittleness. The incorporation of DFMF, a material conventionally destined for landfill, demonstrates an enhancement in the ductility of MICP–treated sand. Various proportions of DFMF were incorporated (0%, 0.1%, 0.2%, 0.3%, 0.4%, 0.5% by weight), leading to an observable improvement in unconfined compressive strength (UCS), splitting tensile strength (STS) and in the microstructural configuration of MICP-treated sand. The presence of DFMF fostered bacterial immobilization, catalyzed CaCO3 production, and culminated in an optimum DFMF content at 0.2%. This not only mitigated soil brittleness by introducing ductility via calcite precipitation but also culminated in a “sand particles-fibers-sand particles” spatial configuration, reducing the weakening effect of water on MICP-treated sand samples. This study, therefore, highlights the potential of DFMF as a promising additive in MICP-treated sand, thereby offering an effective method for recycling and reusing discarded facial mask fibers.

MODELLING OF A THREE-DISPERSED SUSPENSION FILTRATION

The injection method of soil stabilization is one of the methods to improve the soil base during the road construction. This method consists in the introduction of special compounds into the ground with the help of special equipment. Such compositions, as a rule, are solutions of polymers or cement, which harden, forming a solid base. The advantages of the injection method of soil stabilization for roads include rapid completion of work, minimal environmental impact, the possibility of application in difficult geological conditions, as well as strengthening the soil base at great depth. Injection solutions penetrate into microcracks and micropores of soils, forming a deposition. The study of liquid filtration in a porous soil system is of great practical importance. The paper considers the filtration of liquid in a porous medium with three types of particles. In the considered problem, each of the three types of suspension particles is characterized by its linear filtration function. It determines the size-exclusion particle capture mechanism, in which particles whose diameter exceeds the size of the pores get stuck in them, the rest pass through them unhindered. Numerical solutions are obtained for the concentrations of suspended particles of three types, as well as the total deposition. Depending on the initial parameters of the problem, the concentrations of suspended particles are either monotonic functions or non-monotonic, reaching the maximum value. In this paper, asymptotic solutions are constructed for the concentrations of suspended and retained particles near the concentration front, which are compared with numerical ones. The solution is obtained at infinity using a traveling wave.