Plastic Powder Research Articles

The interplay between compression mechanisms and compaction pressure in relation to the loss of tabletability of dry granulated particles

The study investigated the sequential relationship between composition, fracture strength, degree of fragmentation, and loss of tabletability (LoT) of dry granulated particles to get a deeper insight into the underlying causes controlling the LoT. Surrogate granules, consistent in dimension and composed of a systematic variation of a brittle (lactose) and plastic powder (microcrystalline cellulose), were prepared by compaction. These granules were then compressed into tablets at low compression pressures, considered to correspond to the compression phase during which the main fragmentation occurs. The mechanically weak tablets were gently deaggregated into compressed granules, and the proportion of formed fragments was determined using dry powder laser diffractometry and by sieving as an indication of the degree of granule fragmentation.The compressed granules comprised three sub-populations of particles, i.e., non-fragmented granules, fragmented granules, and fine particles, with fragmentation ceasing already within the restricted pressure range applied. The degree of granule fragmentation was dependent on composition and showed an inverted relationship with granule fracture strength. For tablets formed at 100 MPa, the LoT was primarily controlled by the degree of fragmentation, while for tablets formed at 300 MPa, the LoT was affected by a combination of granule fragmentation and deformation. Thus, the relative impact of fragmentation and deformation on the LoT is dependent on the tableting pressure.

New Die-Compaction Equations for Powders as a Result of Known Equations Correction—Part 3: Modernization of Plasticity Equations for a Porous Body

Equations of plasticity of a porous body proposed by different authors and obtained under the condition that the yield surface of a porous body has the shape of an ellipsoid of revolution are considered in this paper. Such equations have two independent parameters which are the functions of relative density. Various theoretical dependences of these parameters on the relative density and, as a result, various equations for describing the die-compaction of powders are presented. It is shown that the correction of two density-dependent parameters, taking into account the initial density, makes it possible to significantly increase the accuracy of approximation of experimental data on the powder compaction process (PCP) of various powders. Among the considered “continuum” equations of powder die-compaction, the PCP to a density of 0.95 is the most accurately described by the equation in which the corrected Skorokhod’s theoretical density functions are used and which contains one constant as a result. Another equation which contains four constants allows one to accurately (R2 > 0.9990–0.9999) describe the PCP to a density of >0.95. This equation is obtained by replacing one of two independent parameters in the traditional continuum equation with the lateral pressure coefficient followed by substituting, instead of those parameters, their dependencies on the density in the form of power function. The adequacy of the PCP description by this equation was verified by approximating experimental data on the die-compaction of iron powders to a relative density greater than 0.95, as well as highly plastic powders with a final density of ~1.0.

A step to microplastic formation: Microcracking and associated surface transformations of recycled LDPE, LLDPE, HDPE, and PP plastics exposed to UV radiation

Plastics when exposed to UV radiation start to degrade via photooxidative aging including free radical formation, oxidation, chain scission and/or crosslinking reactions. These chemical changes can cause loss in mechanical strength, surface embrittlement, and eventually surface erosion. The eroded particles are microplastics (MPs), which have been identified as a potentially serious threat to the environment and its inhabitants. In general, photodegradation of virgin plastics has been studied extensively, but there is not much literature on the degradation of recycled plastics. The goal of the study was to investigate the changes caused by photodegradation in recycled plastics and assess the potential risks of MPs formation. And eventually, knowing the chemical and physical transformations occurring on the surface understand the mechanism behind surface microcracking, which is the first step of MPs formation. Pellets of five industrially recycled plastics (low-density polyethylene (rLDPE), linear low-density polyethylene (rLLDPE), high-density polyethylene (rHDPE), and two polypropylenes (rPP)) from different waste sources were analysed. UV irradiation was performed in an accelerated weathering chamber for milled (< 400 µm) plastic powder to ensure homogeneous changes throughout the sample. The properties were investigated by ATR-FTIR, HT-SEC, XPS and DSC. Formation of microcracks was studied on plastic pellets by SEM. The results showed that the degradation significantly differed between the recycled plastics, and the waste source was more important than the plastic type. rLDPE and one of the rPP samples showed a significant increase in carbonyl index as well as decrease in molar mass during the first 500 h of UV exposure. The other rPP and rHDPE samples showed first considerable signs of degradation only after 1000 h of UV exposure. Minor changes were observed for the rLLDPE sample during the whole test. The SEM revealed microcracking on the surface of all samples, which also had noticeable degradation identified by other methods. These recycled plastics can be considered the ones with the highest potential of MPs formation. From the chemical and physical transformations identified on the surface, the mechanism leading to microcracking, which is the first step in the formation of MPs, is proposed.

Investigating the properties of a novel organic composite warm mix additive on SBS modified asphalt binder

This study investigated the effects of new organic composite warm mix additive on the performance and microstructure of SBS modified asphalt binder. Acmp, as an organic composite warm mix additive, was used to prepare warm mix SBS modified asphalt binders with different contents, and compared and analyzed with Sasobit and Evotherm warm mix additives. The rheological properties of asphalt binders were evaluated by rotational viscometer, dynamic shear rheometer and bending beam rheometer. The effects of the warm mix additives on chemical composition and microstructure of binders were analyzed by fourier transform infrared spectroscopy, thermogravimetric analysis and fluorescence microscope. The results showed that, Acmp had significant viscosity reducing effect, and 6 % Acmp reduced the rotational viscosity of binder by approximately 50 %. Acmp warm mix modified asphalt binder exhibited better low temperature performance compared to Sasobit and Evotherm, but Acmp had negative impact on the high temperature performance. Acmp was mainly composed of light components produced by the cracking of rubber powder and plastic powder, which were mainly short chain alkanes and did not affect the distribution of SBS in binder. These light components were well soluble in asphalt binder to improve its fluidity and were the main components that affected the performance of binders and achieved warm mix effects. Considering the performance of asphalt binder and mixture, Acmp is more suitable for pavements in cold regions, with a recommended dosage of 5 % of asphalt mass. The findings validate the effectiveness of organic composite warm mix additives and contribute to the exploration of more efficient new warm mix technologies.

Microwave spheronization of polyetherimide powder in plasticizer liquids for laser powder bed fusion

Preparing spherical powders from high-performance engineering plastics is usually challenging due to their high characteristic temperatures and excellent chemical resistance. This study reported an innovative liquid-phase microwave heating method for rapid spheronization of amorphous polyetherimide (PEI) powder and explored the processability of resultant powder in laser powder bed fusion (PBF-LB). The results indicated that the microwave process conditions, including the type of plasticizer liquids and microwave time, significantly influenced the spheronization effect and physicochemical properties of the powder. The plasticizing effect of the liquid largely reduced the glass transition temperature and melt viscosity of PEI particles, promoting their spheronization process. Spheronization enhanced the PBF-LB processability of PEI powder and reduced structural defects in parts, thereby leading to improved mechanical properties. Furthermore, its valuable flame-retardant properties were largely preserved. These findings showed the power of microwave spheronization in plasticizer liquids for advancing the application of optimized high-performance engineering plastic powders in the field of PBF-LB.

Experimental study on the effect of waste plastic powder and marble powder on the swelling behavior and strength parameters of a clay soil

This research aims to provide insights into how the combination of waste plastic powder and marble powder affects the geotechnical properties of clay soil. The findings from this study can have practical implications for construction, foundation design, and environmental sustainability, as the reuse of waste materials can potentially improve soil properties and reduce environmental impacts. In this context, we executed a series of experiments involving samples that were fortified with varying proportions of plastic powder (0%, 1.5%, 2%, 2.5%, and 3%) and stabilized using marble powder at concentrations of 3%, 4.5%, 6%, and 7.5 %. The findings indicate a gradual decrease in liquid limits, swell potentials, and swelling pressure as the proportions of waste plastic powder and marble powder increase. The stress-strain curves obtained from the unconfined compressive strength (UCS) tests revealed that the incorporation of waste plastic powder into marble-stabilized soil led to an increase in UCS. These results emphasize the positive impact of waste plastic powder in enhancing the mechanical properties of the specimens. This research aims to provide insights into how the combination of waste plastic powder and marble powder affects the geotechnical properties of clay soil.

The synergistic effect of recycled glass fiber reinforced plastic and silica fume on cement mortar properties

In recent years, there has been a significant increase in the generation of glass fiber-reinforced plastic (GFRP) waste. Traditional disposal methods have led to the wastage of resources and elevated carbon emission rates. Therefore, recycled glass fiber reinforced plastic powder was utilized to synergistically substitute a portion of the cement with silica fume, aiming to produce green cementitious composites. The study focuses on crucial properties such as strength, drying shrinkage, and fluidity. XRD, TG/DTG, and FT-IR analyses were conducted to clarify the hydration process of the composites, while MIP and water porosity measurements assessed the modifications in pore structure across various sample groups. The results demonstrate that the compressive strength of the new composite substantially increases by approximately 40 %, while cement consumption decreases by 30 %. This study presents a pioneering utilization of recycled glass fiber-reinforced plastic (RGFRP) and an innovative method for producing eco-friendly cementitious composites.

Experimental Study on Compressive Strength of the Cement Mortar Cubes with Partial Replacement of Fine Aggregate Using Polyvinyl Chloride (PVC) Plastic

Mortar is a material that consists of cement and sand with a range of applications in the construction industry. However, the plain mortar materials are usually brittle and often crack and fail more suddenly than reinforced mortar. This experimental study is about the compressive strength of cement mortar stabilised with the use of the polyvinyl chloride (PVC) plastic powder. Generally the compressive strength of cement mortar of mix proportion (1:3) is 33 N/mm² to 53 N/mm² has been obtained after 28 days curing. The cement mortar ratio is 1: 3 respectively. The PVC powder is added along with the sand with percentages of 0%, 2.5%, 5%, 7.5%, 10% respectively. And the water cement ratio is 0.5 with volume. The moulds of 70×70×70 mm size were used for the cube test, and the cubes were tested on the Compressive testing machine to determine the strength of cube for 3, 7, 28 days of time period respectively. The main aim of f this study to determine the compressive strength of cement mortar (1:3) of sand added with PVC powder, Key Words:- Waste Plastic, Polyvinyl Chloride, Compressive Strength, Mortar.

Exploring the Influence of Plastic Powder Incorporation on Geotechnical Properties of Expansive Soil Stabilized with Granite Powder for Building Applications

An experimental study was undertaken to investigate the effect of plastic and granite waste powder on the geotechnical performance of expansive soil, using different mix ratios. The soil studied is Hachem, in the northwestof Algeria. In this context, first reinforcing the plastic powder with granite powder, then add the mixture to the expansive soil. The percentage of plastic powder is (0%, 1%, 2%, 3%, 4%) and reinforced at 2%, 4%, 6% and 8% with granite powder. The experimental results showed a gradual decrease in liquid limits, swell potentials, and swelling pressure as the proportions of plastic and granite powder increase. In terms of the results obtained by reducing swelling and swelling pressure values and increasing unconfined compressive strength (UCS) tests and ductility values, this mixture of waste plastics and granite can be of great importance in improving the mechanical properties of samples.

Cu Promoted the Dynamic Evolution of Ni-Based Catalysts for Polyethylene Terephthalate Plastic Upcycling.

Upcycling plastic wastes into value-added chemicals is a promising approach to put end-of-life plastic wastes back into their ecocycle. As one of the polyesters that is used daily, polyethylene terephthalate (PET) plastic waste is employed here as the model substrate. Herein, a nickel (Ni)-based catalyst was prepared via electrochemically depositing copper (Cu) species on Ni foam (NiCu/NF). The NiCu/NF formed Cu/CuO and Ni/NiO/Ni(OH)2 core-shell structures before electrolysis and reconstructed into NiOOH and CuOOH/Cu(OH)2 active species during the ethylene glycol (EG) oxidation. After oxidation, the Cu and Ni species evolved into more reduced species. An indirect mechanism was identified as the main EG oxidation (EGOR) mechanism. In EGOR, NiCu60s/NF catalyst exhibited an optimal Faradaic efficiency (FE, 95.8%) and yield rate (0.70 mmol cm-2 h-1) for formate production. Also, over 80% FE of formate was achieved when a commercial PET plastic powder hydrolysate was applied. Furthermore, commercial PET plastic water bottle waste was employed as a substrate for electrocatalytic upcycling, and pure terephthalic acid (TPA) was recovered only after 1 h electrolysis. Lastly, density functional theory (DFT) calculation revealed that the key role of Cu was significantly reducing the Gibbs free-energy barrier (ΔG) of EGOR's rate-determining step (RDS), promoting catalysts' dynamic evolution, and facilitating the C-C bond cleavage.

New Die-Compaction Equations for Powders as a Result of Known Equations Correction: Part 2—Modernization of M Yu Balshin’s Equations

Based on the generalization of M. Yu. Balshin’s well-known equations in the framework of a discrete model of powder compaction process (PCP), two new die-compaction equations for powders have been derived that show the dependence of the compaction pressure p on the relative density ρ of the powder sample. The first equation, p=w(1−ρ0)(n−m)·(ρ−ρ0)n(1−ρ)m, contains, in addition to the initial density ρ0 of the powder in die, three constant parameters—w, n and m. The second equation in the form p=H1−ρ0b−c·ρ−ρ0b1−ρ0c−aρ−ρ0c also takes into account the initial density of the powder and contains four constant parameters H, a, b, and c. The values of the constant parameters in both equations are determined by fitting the theoretical curve according to these equations to the experimental powder compaction curve. The adequacy of the PCP description with these equations has been verified by approximating experimental data on the compaction of various powders, including usual metal powders such as iron, copper, and nickel, highly plastic powders such as tin and lead, a mixture of plastic powder (Ni) with non-plastic powder (Al2O3), nickel-plated alumina powder, as well as powder of a brittle compound, in particular titanium carbide TiC. The proposed equations make it possible to describe PCP with high accuracy, at which the coefficient of determination R2 reaches values from 0.9900 to 0.9999. The four-constant equation provides a very accurate description of PCP from start to finish when the density of the samples stops increasing once the pressure increases to an extremely high level, despite the presence of porosity.

Analysing the Effectiveness of Municipal Wastewater Sludge, Bagasse Ash, Rice Husk Ash and Plastic Waste Powder for Manufacturing Bricks

Indian cities’ rapid industrialisation and urbanisation have created a requirement for massive infrastructure growth. As a result, numerous homes have been built on a big scale. As one of the most important building materials, bricks must be produced in large quantities using resources including in-situ clay, energy, and water. The concern about the sustainability of expansion is raised by the rapid exploitation of such resources, which also leads to environmental imbalance. Numerous thousands of tonnes of waste are produced as a result of the rapid growth, which creates problems with not only disposing off the waste but also with the availability of landfill spaces in urban areas. This project aims to conduct an experimental analysis of the potential use of bagasse ash, rice husk ash, plastic waste powder, and municipal wastewater sludge as clay substitutes in brickmaking. Testing the efficacy of these materials revealed that the bagasse ash brick with plastic waste powder demonstrated a significant increase in compressive strength and less water absorption when compared to a conventional brick. According to the test results, the average compressive strength of the bagasse ash brick created using plastic waste powder is 9.81 N/mm2 and 9.03 N/mm2, respectively, which is higher than the standard necessary construction brick according to our Indian requirements. These bricks can be utilised as first- and second-class bricks. These bricks can be used in both load-bearing and non-load-bearing structures because the average water absorption, according to specifications, was not more than 20%. This process for producing building materials encourages the use of waste resources in construction.

Recycled plastic powder for oil spill clean-up

This work investigated an eco-friendly, low-cost approach for oil spill remediation using recycled plastic powder (RPP). SEM, TEM and BET analysis, characterized the plastic sorbents. Batch adsorption experiments demonstrated RPP's effectiveness in oil removal under various conditions. Pseudo-second-order kinetics provided a good description of adsorption kinetics, indicating chemisorption as the main mechanism. Optimal oil removal of 96.1 % was achieved at pH 7, 25 °C temperature, 90 min contact time, 50 mg L−1 starting oil content, and 20 mg RPP dose. Adsorption equilibrium followed the Sips isotherm model, suggesting complex heterogeneous adsorption with highest capability of 53.4 mg g−1. Thermodynamic studies verified the endothermic and spontaneous nature of adsorption. RPP also showed excellent regeneration capability, recovering 95.2 % of the initial adsorption capacity after 5 reuse cycles. Generally, recycled plastic may be more cost-effective than producing new plastic from raw materials, as it reduces the need for virgin materials and can save energy.

Precast lightweight concrete wall panels from plastic waste and household ash as partially sand and cement replacement

The present study aims to investigate the properties of precast lightweight concrete wall panels prepared with the addition of plastic powder and household ash as a partial substitution for sand and cement.

Training On Making Plastic Powder Mixture Paving Blocks

Abstract. Community service activities in the Minggir area, Sleman district, Yogyakarta Special Region province, including training on making paving blocks in the shape of a quadrilateral mixture of used plastic, have been completed properly. The activity began with the manufacture of plastic shredders in the resik plus workshop. After the shredding machine can be functioned, then training is carried out for the youth of the region to step aside to try to operate the tool, so as to get maximum results. The next activity was a training attended by 5 youth of Minggir Village 2 Sendangagung Minggir Sub-district which began with making rectangular paving blocks with a width of 10 cm, length of 20 cm and thickness of 6 cm. The composition of the paving mixture to be made is 1 Pc (cement): 8 Ps (sand), then added 5% plastic powder from the volume of sand. Paving block printing is done manually with a mash system to facilitate printing without special capabilities. The activity of making plastic mixed paving blocks has been completed well and is useful for residents to step aside

Mechanical properties of cement mortar with gamma-irradiated recycled plastic powder, pellet, and fiber

This study aimed to investigate the impact of gamma irradiated recycled polyethylene terephthalate (PET) pellets, powder, and fibers on the mechanical performance and ductility of cementitious mortar. The sensitivity to gamma irradiation was explored by varying the irradiation rate and total dose. The recycled PET additives employed in this experiment consisted of pellets and their different application forms: powder and fiber, containing 30 % recycled raw materials polymerized through a chemically recycled method. For comparison, plain mortar composite and virgin PET mortar composite were used as controls. When PET pellets partially replaced the aggregate, the compressive strength of the composite decreased significantly as the volume fraction of pellets increased. Conversely, specimens partially replaced by PET powder showed an overall increase in compressive strength compared to the control specimens, regardless of the volume fraction of powder, gamma irradiation rate, or total dose, with no change in ductility. To assess changes in tensile strength and ductility of the recycled PET fibers under different gamma irradiation rates and total doses, direct fiber tensile tests were conducted. The gamma-irradiated fiber specimens exhibited a slight increase in strength and ductility. This information allowed for the calibration of the tensile material constitutive relationship of PET fibers, which was subsequently used in nonlinear finite element analysis. The study also investigated the variation in direct tensile, compressive, and flexural strengths with different volume fractions of fiber. The results indicated that the strength enhancement was minimal, but the direct tensile and flexural tensile analyses predicted an enhancement.

Effect of process parameters on the performance of PA6 products fabricated by rotational molding

AbstractIn this study, a desktop‐class dual‐axis rotational molder was employed to mold PA6 products. Notably, the morphology of the plastic powder during the rotational molding process was examined through visualization techniques. The research also aimed to delineate the causes of wall thickness variation in the products, while proposing a process method to enhance the uniformity of wall thickness. The implementation of a two‐stage mold temperature setting method for the ends of the mold improved wall thickness uniformity of the products. Furthermore, the interrelationships between crystallinity, tensile strength, and impact strength of the products were explored by comparing different cooling rate conditions. Increasing the cooling rate resulted in a decrease in both crystallinity and tensile strength, while concurrently boosting the impact strength of the products.Highlights A desktop‐class, two‐axis rotational molding equipment is designed. A method for visualizing the rotational molding process is conducted. Mold temperature and rotational speed affect product wall thickness. Two‐stage mold temperature improves wall thickness uniformity. Mold cooling rate affects the tensile and impact strength of the product.

Waste Plastic Powder Coating on Acidic Aggregates: A New Hydrophobic Coating Technology to Build Moisture-Resistant Asphalt Mixtures

The surface energy of aggregate in asphalt pavements has a huge impact on its moisture susceptibility. The commercial antistripping agents widely used in asphalt may not be effective enough to enhance the moisture resistance if large quantities of acidic aggregates exist in pavements. This is also the reason why moisture damage is still an issue in many U.S. regions primarily supplied with “problematic” aggregates. In this regard, a promising solution is to use waste-plastic-coated aggregate, the surface of which is fundamentally modified and has a high affinity with asphalt because of the hydrophobic nature of plastic. However, it has not been widely promoted in the industry since there needs to be a practical and reliable method for uniform coating and avoiding the agglomeration of fine aggregate. To this end, an entirely new coating technology (thermoplastic polyethylene powder coating [TPPC]) was developed to coat aggregate using polyethylene (PE) powder. This technology utilizes a cheap but highly wettable fluidized bed to stably disperse the hydrophobic PE powder. Then, the dispersion liquid is sprayed onto the hot aggregate where the fluidized bed will evaporate fast while the PE particles stay, melt, and coat the aggregate surface. The microstructures of the coated aggregate were directly observed by scanning electron microscopy. Surface energy-based thermodynamic parameters were used to demonstrate the effect of TPPC on the moisture resistance of asphalt mixtures. This technology can be extended to other types of waste plastic if suitable fluidized beds are developed.

A comparison study of using polyethylene terephthalate and limestone fillers on porous asphalt mixture behaviours

Regardless of their gradations, all varieties of asphalts pavement mixtures are smooth and impermeable, which reduces the safety of cars in different weather situations. Comfort and safety on the roads during various weather conditions are directly influenced by surface layer characteristics. Porous asphalt has quick surface drainage, eliminates splashing, and improves safety. Additionally, because water drains into the asphalt mixture's pores, the desired level of friction between the tire and the pavement will be guaranteed. This necessitates the production of permeable asphalt pavement mixtures for roads and highways that can handle heavy traffic loads. The primary objective of this study is to investigate the enhancement of stability and mechanical properties in porous mixtures by substituting conventional limestone filler with Polyethylene Terephthalate Waste Plastic (PET) powder. Simultaneously, the study aims to mitigate environmental pollution by utilizing PET materials, which take decades to decompose naturally. The PET used in the study was melted at 260 0C and then powdered using 7000, 18000, and 28000 rpm grinders to obtain filler that passed sieve no. 200. The ASTM D7064-based evaluation of the mixture's optimum asphalt content takes into account essential factors, including drain down, percentage of air voids, and optionally, the results of the Cantabro abrasion test, which was calculated to be 4.75%, decreased to 4.5% when polyethylene terephthalate powder was utilized as filler in place of limestone. The optimum limestone filler percentage was 3.0% based on National Asphalt Pavement Association (NAPA) gradation employed the same procedure in the optimum asphalt content evaluation. However, the results showed that the optimum amount when using PET powder reached 3.5%.The criteria used to investigate the newly proposed asphalt pavement mixture are the Marshall method, Drain down of binder, Cantabro loss test, and permeability of porous mixture. This research reveals that adding PET as an alternative filler to limestone reduces permeability, Drain Down, and Cantabro by 22.64%, 29.27%, and 16.33% respectively while increasing the stability by more than 15.5%. It is still promising that the permeability of the mixture stays within the desirable limit for comfort and safe driving. Filler replacement was tied to performance testing and was demonstrated to raise the deformation strength in the KIM test more than twice from 1.54 MPa to 3.63 MPa by employing a specialized head and Marshall loading machine as an alternative method to the wheel tracking test for evaluating rutting in the mixture. The index of retained stability by aging the samples in water bath at 25 °C from one to four days increased from 8.66 MPa by 33.1% to reach 12.57 MPa where filler replaced, and the indirect tensile strength based on ASTM D4867raised by 29.08% from 0.578 to 0.735 MPa for conditions samples and raised from 0.681 to 0.879 MPa to raise the unconditioned samples by 12.9%. It is also worth noting that the use of PET as a waste material has significant environmental benefits.

Strength Improvement of Black Cotton Soil Using Plastic Bottles and Crushed Glass Wastes

The aim of this study was to improve the strength of black cotton soil for its suitability for road subgrade construction using wastes from plastic bottles and glass waste powders. Currently, nondecomposable wastes from plastic and glasses have become threats to the human health and the environment. This study used the wastes to replace cement, since the cost of cement raised due to energy and raw material to use as stabilizer in weak soil. The glass powder (WGP) and the plastic chips were mixed with the soil sample with a percentage by dry weight of 6%, 12%, 18%, and 24% of WGP and 2%, 4%, 6%, and 8% of plastic chips, respectively. The glass waste can be prepared similar to the soil as the requirement of test standards and plastic wastes was used as reinforcement for the soil-glass-mix; hence, its purpose was geomechanical. Laboratory tests for soil-mix physical properties and strength parameters were conducted. Soil laboratory test results proved that the natural soils were classified to A-7-5 as per the AASHTO Soil Classification System and CH as per the Unified Soil Classification System (USCS). The Unconfined Compressive Strength (UCS) improved from 91.92 kPa to 688.83 kPa, and the California Bearing Ratio (CBR) improved from 2.64 to 17.5. The improvement of subgrade soil properties was increased with increased ratios of powder glass and plastic strips. The result indicated that the two stabilizers were very effective in improving strength parameters and index parameters.