Recycled Polyvinyl Chloride Research Articles

The environmental costs of clean cycles: Quantitative analysis for the case of PVC window profile recycling in Germany

AbstractRecycling schemes for long‐lived products are challenged by the presence of “legacy substances,” which have been used in production in the past, but are nowadays classified as substances of concern. This study quantitatively evaluates the trade‐offs between phasing out legacy substances, increasing circularity levels, and reducing life cycle impacts of polyvinylchloride (PVC) window profiles recycling in Germany based on a comprehensive dynamic material and substance flow analysis coupled with a prospective life cycle assessment. Scenario results indicate that although lead had been phased out in virgin PVC by 2015, lead concentrations in end‐of‐life PVC window profiles will remain above 0.3% until the end of the century without a restriction of lead in recycled PVC and will be by factor 3–5 higher compared to a restriction as stipulated by EU 2023/923. However, the latter is associated with lower recycling rates and higher life cycle environmental impacts of PVC window frame waste management, which cannot be fully compensated by the introduction of new waste treatment pathways using currently available technologies. The study serves to introduce a new comprehensive modeling framework, which allows for the consideration of trade‐offs between substance, material, and environmental impact dimensions as a basis for discussing and developing sustainable waste management strategies.

Comprehensive investigation of recycled PVC powder.

This study constitutes a comprehensive investigation centred on comprehending the behaviour and characteristics of recycled polyvinyl chloride (PVC) powders. The overarching objective is to successfully conclude the initial research phase, during which PVC-coated fabric offcuts undergo a transformation into PVC powder while achieving complete separation from polyethylene terephthalate fibres. The study entails a qualitative description of the morphology of PVC powder particles, employing an optical microscope to distinguish the diverse shapes exhibited by these particles. The optical microscope observations of PVC powder reveal a distinct array of non-spherical particles characterized by flat, elongated shapes. These high-magnification images unveil the intricate morphological features of the particles, highlighting their irregular shapes. Subsequently, a quantitative analysis of PVC particle size distribution is performed, comparing results from optical microscopy with those obtained through mechanical sieving. The qualitative and quantitative findings obtained provide robust evidence supporting the correlation and confirm that most particles are smaller than 600 µm (93.6%) using an optical microscope and the sieving process (96.39%). The greatest fraction (83.44%) is in the size range between 200 and 600 µm. Assessing flowability, another significant aspect in the evaluation of powders, provides insights into its behaviour and interparticle interactions. The flowability results indicate a Compressibility Index of approximately 26.84%, which suggests poor flowability. This means that the powder is likely to encounter difficulties in flowing freely. This finding is in line with the Hausner ratio, which measures 1.37. This investigation of recycled PVC powder will offer insights into the potential applications and processing considerations of this powder. More concretely, the use of recycled PVC powder shows promise as a viable alternative to conventional PVC resin in plastisol formulations, offering the potential to maintain the properties of the final PVC product without adverse effects.

Investigation of recycled materials for radiative cooling under tropical climate

Abstract As a sustainable alternative to using virgin polymer, we propose the use of recycled polymer for the fabrication of passive radiative cooling materials to tackle both the increasing demand for cooling systems and to upcycle plastic waste. Using recycled acrylic sheets as the binder for BaSO4 thorough sol–gel method, a sustained 1.2 °C sub-ambient temperature during daytime and 3 °C sub-ambient temperature during nighttime was achieved under the hot and humid conditions of the tropical climate. The coating achieved 97.7 % solar reflectance and 95 % infrared emittance. Separately, when porosity is introduced to recycled acrylic sheets through a phase inversion method, a near-ambient temperature during noontime and sustained sub-ambient temperature of 2.5 °C during nighttime was achieved (with 96.7 % solar reflectance). Comparable performances are also obtained using recycled polyvinyl chloride (PVC) pipe and expanded polystyrene (EPS) foam.

Bisphenol A in surface waters in Germany: Part I. Reassessment of sources and emissions pathways for FlowEQ modeling.

Bisphenol A (BPA) enters the environment through various industrial and consumer-related pathways. Industrial sources include BPA manufacturing and secondary industrial uses such as the manufacturing of polymers and other substances based on or containing BPA. However, secondary sources and emissions to the environment, such as those related to the consumer use of articles containing BPA, may be more important than industrial emissions. Although readily biodegradable, BPA is widely distributed in various environmental compartments and living organisms. It is still not well understood which specific sources and pathways are responsible for releasing BPA into the environment. Therefore, we developed FlowEQ, a coupled flow network and fugacity-based fate and transport model for the assessment of BPA in surface water. The work is divided into two parts. In Part I, inputs needed to support the modeling and model validation were collected. Bisphenol A was measured at 23 wastewater treatment plants (WWTPs) and 21 landfills in Germany. In addition, the BPA content of 132 consumer articles from 27 article classes was analyzed. Bisphenol A concentrations in WWTPs ranged from 0.33 to 910 µg L-1 in influents and from less than 0.01 to 0.65 µg L-1 in effluents, resulting in removal efficiencies of 13%-100%. Average BPA concentrations in landfill leachate ranged from less than 0.01 to approximately 1400 µg L-1 . Bisphenol A concentrations measured in consumer articles varied significantly by type, ranging from less than 0.5 µg kg-1 in printing inks up to 1 691 700 µg kg-1 in articles made from recycled polyvinyl chloride (PVC). These concentrations were combined with information on use, leaching, and contact with water to develop estimates of loadings. Together with the results of the FlowEQ modeling presented in Part II, this assessment improves our understanding of the sources and emission pathways of BPA in surface water. The model considers various sources of BPA and can estimate future surface water concentrations of BPA based on changes in use. Integr Environ Assess Manag 2024;20:211-225. © 2023 The Authors. Integrated Environmental Assessment and Management published by Wiley Periodicals LLC on behalf of Society of Environmental Toxicology & Chemistry (SETAC).

The carbon footprint of Bubble-PAPR™: A novel item of personal protective equipment.

Personal protective equipment has important environmental impacts, assessing these impacts is therefore an important element of personal protective equipment design. We applied carbon footprinting methodology to Bubble-PAPR™, a novel, part-reusable and part-recyclable powered air-purifying respirator, designed at our institution. Current guidance states that disposable respirator masks can be worn for 1-h in the United Kingdom, whilst the Bubble-PAPR™ allows prolonged use. Following a detailed use-case analysis, the carbon footprint of each component was estimated using a bottom-up (attributional) cradle-to-grave process-based analysis. Modelling considered the use of virgin or closed loop recycled polyvinyl chloride for the disposable hood element, and disposal via infectious or recycling waste streams to estimate a per-use carbon footprint. The per-use carbon footprint with manufacture from virgin polyvinyl chloride and disposal via incineration is 0.805 kgCO2e. With nine cycles of closed loop recycling and manufacture of the polyvinyl chloride hood (10 uses), the carbon footprint falls to an average of 0.570 kgCO2e per use. Carbon footprinting may contribute to the value proposition of this novel technology. We estimate that a single Bubble-PAPR™ use has a higher carbon footprint than disposable respirator mask-based PPE. However, this is mitigated in circumstances when multiple disposable mask changes are required (e.g. prolonged use) and use may be justifiable when user comfort, visualisation and communication with patients and colleagues are essential.

Recycled polyvinyl chloride microplastics: investigation of environmentally relevant concentrations on toxicity in adult zebrafish

ABSTRACT Recycled polyvinyl chloride (PVC) microplastics have been detected in the aquatic environment. These recycled microparticles contain chemicals that are released into the environment reaching different organisms. Although the problem of the presence of recycled PVC microparticles in the environment is evident, the toxicological consequences of this contaminant to exposed organisms remains to be better determined. The aim of this study was to investigate the toxicity attributed to exposure to environmentally relevant concentrations of recycled PVC microplastics in adult zebrafish (Danio rerio). The experimental groups were: negative control, vehicle control, positive control, and recycled microplastics (20 ± 5 μm) at 5, 10 or 20 μg/L. Zebrafish (D. rerio) were exposed to respective treatments for 96 hr. Locomotion and oxidative status parameters were measured and mortality recorded. The positive control group presented increased mortality rates and decreased locomotor activity. Animals from the vehicle group did not show marked differences. Finally, no significant disturbances were found in survival rate, locomotion pattern and oxidative status of animals exposed to recycled PVC microparticles at 5, 10 or 20 μg/L. Taken together our results suggest that recycled PVC microplastics in this particle size range do not appear to exert harmful effects on exposed adult D. rerio. However, these results need to be carefully observed due to limitations including size of particle and duration of exposure parameters that might affect ecological consequences. It is suggested that additional studies applying other particles sizes and chronic exposure are needed to more comprehensively verify the toxicity of the contaminant investigated here.

Evaluation of ciprofloxacin (CIP) and clarithromycin (CLA) adsorption with weathered PVC microplastics

The sorption kinetics of two of the most frequently used antibiotics onto recycled (weathered) polyvinyl chloride (PVC) was investigated, using Freundlich and Langmuir isotherm models. Various experimental conditions were set, including pH, contact time, rotational speed, temperature, and initial concentration. The batch experimental results indicated that Freundlich model was better fitted than Langmuir (R2: 98.7 and 84.7, for CIP and CLA respectively). Maximum adsorption capacity is 45.9 mg/g and 22.0 mg/g for CIP and CLA, respectively. Enthalpy (ΔH), and entropy (ΔS) values were negative for CIP, indicating that the reaction was exothermic and spontaneous, respectively. It was vice versa for CLA. Field emission scanning electron microscope (FESEM) and Fourier transform infrared spectrometer (FT-IR) analysis confirmed the physical adsorption mechanism. The results demonstrated that the recycled PVC microplastic has a good capacity for adsorption for both antibiotics.

A Study on the Calculation of the Standard Recycling Cost of PVC Profiles and Flooring Waste in Korea

The Voluntary Agreement for Collecting and Recycling Plastic Waste (VA), including polyvinyl chloride (PVC) profiles and flooring materials, will be converted to an Extended Producer Responsibility (EPR) system from 2023. The objective of this study is to calculate the standard recycling cost and the recycling market size for preparing the new system. Among the total recycling companies participating in the VA, a cost analysis was conducted for 11 profile businesses (35% of the total businesses) and seven flooring businesses (58% of the total businesses). As a result, the standard recycling cost was calculated as 0.45 USD/kg for PVC profiles and 0.36 USD/kg for PVC flooring materials. As of 2020, the total market size is 1135 million USD (5.86 million USD for PVC profiles and 5.49 million USD for PVC flooring materials). Our research shows that few countries have nationally managed accurate data regarding PVC profiles and flooring waste. Compared to the European Union (EU), the total amount of recycled PVC products in Korea seems lower, but the recycling rate per capita is higher. This study can provide basic data about the recycling industry for the recycling academia and the manufacturing field.

Lightweight alkali-activated materials and ordinary Portland cement composites using recycled polyvinyl chloride and waste glass aggregates to fully replace natural sand

Polyvinyl chloride plastic (PVC) and glass waste have proven to be significant environmental concerns considering their restricted reuse and complicated recycling procedures. Glass and PVC waste materials form a substantial portion of total solid wastes that negatively influence the environment. This study aims to fully replace natural sand with recycled PVC and waste glass aggregates in alkali-activated materials (AAMs). A comprehensive testing programme was employed to investigate the effect of 100 % aggregate replacement on the composites’ mechanical performance, water absorption, impact resistance, thermal conductivity, resistance to harsh environments, and microstructural changes. Results revealed that AAMs containing recycled PVC and glass aggregates outperformed their ordinary Portland cement (OPC)-based composite counterparts in terms of mechanical properties, energy absorption, thermal conductivity, and carbon footprint estimation. Although mixtures containing recycled aggregates cannot be deemed for load-bearing applications, these composites exhibited a promising capacity to be used in insulating applications. AAMs containing 100 vol-% PVC aggregates with flexural and compressive strengths of 9 and 11 MPa, respectively, registered the highest energy absorption of about 6 J, three times higher than the AAM control sample, and the lowest thermal conductivity of about 0.5 W/mK, with about 80 % reduction of thermal conductivity compared to the AAM control sample. With the full replacement of PVC and glass aggregates, the most significant decrease in the carbon footprint is achieved for AAM (−352.25 kg CO2-eq) and OPC (−353.94 kg CO2-eq), respectively.

Ispitivanje mehaničkih svojstava regranulata PVC-a sa dodatkom plastifikatora iz otpadnog PET-a

The subject of this research is the production process of polyvinyl chloride (PVC) regranulate using a plasticizer synthesized from recycled poly(ethylene terephthalate) (PET). In this way, a plasticizer was synthesized that does not pose a risk to human health and the environment in accordance with the principles of chemical leasing and green chemistry. The obtained plasticizer was characterized using elemental analysis, FTIR, and NMR spectroscopy and determination of hydroxyl and acid number. The mechanical properties of materials obtained on the basis of recycled PVC and plasticizers from PET were tested according to standard methods.

Value-added utilization of coal fly ash and recycled polyvinyl chloride in door or window sub-frame composites

Abstract Comprehensive utilization of coal fly ashes (CFA) solid waste is a worldwide urgent issue. In China, tens of millions of tons of CFA are un-utilized and stored or discarded in landfills per year, causing a significant waste of resources and a serious environmental hazard. Herein, we developed a new process to reuse CFA and recycled polyvinyl chloride (r-PVC) to produce door or window sub-frame (DWSF) composite materials, realized CFA and r-PVC trash to treasure. In this process, aluminate-modified CFA mixing with r-PVC and other additives obtain a mixture, subsequently extruding into pellets, re-extrusion, cooling, shaping, hauling, and cutting to DWSF materials. The mechanical properties of these are excellent and meet the National Standards, with static bending and tensile strengths of 33 and 13.6 MPa, respectively, and a hardness of 89.2 HRR. Compared with the traditional CaCO3-based DWSF, our CFA-based DWSFs have higher competitive both from the perspective of “carbon neutrality” and production costs. More strikingly, this process is simple, robust, and easy to industrialize, which allows large-scale, value-added utilization of CFA.

Determining the Rheological Parameters of Polymers Using Artificial Neural Networks.

Artificial neural networks have great prospects in solving the problems of predicting the properties of polymers. The purpose of this work was to study the possibility of using artificial neural networks to determine the rheological parameters of polymers from stress relaxation curves. The nonlinear Maxwell–Gurevich equation was used as the deformation law. The problem was solved in the MATLAB environment. The substantiation for the choice of the neural network input and output parameters was made. An algorithm for obtaining the data for neural network training was also proposed. Neural networks were trained on theoretical stress relaxation curves constructed with the Euler method. The value of the mean square error (MSE) was used as a criterion for the performance of the training. The constructed model of the artificial neural network was tested on the experimental relaxation curves of recycled polyvinyl chloride. The quality of the experimental curve approximation was quite good and was comparable with the standard methods for processing stress relaxation curves. Unlike the standard methods, when using artificial neural networks, no preliminary data smoothing was required. It is possible to use the proposed technique for processing not only relaxation curves, but also creep curves as well as processing creep tests not only in central tension, but also in bending, torsion and shear.

Mechanical properties of PVC concrete and mortar modified with silane coupling agents

• This study investigated the effect of modification using SCA on the mechanical properties of PVC concrete and mortar. • SCA modification can effectively improve the compressive and flexural strength of concrete and mortar. • SCA can improve the bonding properties between recycled PVC particles and cementitious materials. This study investigates the surface modification of waste polyvinyl chloride (PVC) particles with encapsulated silane coupling agents (SCA) to improve the performance of PVC concrete and mortar. Concrete and mortar were prepared by replacing fine aggregates with equal volumes of PVC particles before and after modification, with volume replacement ratios of 5%, 10%, 15%, 20% and 25%. Experiments were performed to investigate the density, compressive strength and flexural strength of different contents of PVC concrete and mortar. Scanning Electron Microscope (SEM) was used to examine the surface morphology of PVC particles and the interface between the PVC particles and the cementitious material in the mortar. The results showed that the density of concrete and mortar gradually decreased with increasing PVC content; the 28d compressive strength of concrete and mortar increased by 10%-20% after modification with SCA; the 28d flexural strength of concrete and mortar increased by 5%-9%. The SEM results revealed that SCA on the surface of PVC particles improved the mechanical properties of the mortar by better combining the particles with the cementitious material.

Mechanical and physical characteristics of alkali- activated mortars incorporated with recycled polyvinyl chloride and rubber aggregates

One of the ways to achieving net-zero concept in the construction industry is to use alternatives to Portland cement (OPC) and virgin aggregates for concrete manufacturing. Recycled rubber and polyvinyl chloride (PVC) aggregates in conjunction with low-carbon binders can be potentially utilised to substitute natural sand and reduce the negative environmental impacts of OPC. A replacement of natural sand (up to 70% by volume) in alkali-activated materials (AAMs) with recycled rubber and PVC particles derived from tyre waste and insulation coating of electric wires, respectively, was investigated in this study. The performance of developed AAMs was evaluated using a comprehensive testing program including mechanical, physical and microstructure assessments. AAM composites with PVC and rubber particles outperformed natural aggregate composites in terms of thermal resistivity, water absorption, volume permeability voids (VPV), and high-frequency sound insulation. Results showed that 70% PVC mixture achieved the lowest water absorption rate and thermal conductivity with a reduction of 73% and 20%, respectively, compared to the control mixture. A maximum reduction of 34% in VPV was observed in the 70% rubber mixture when compared to the control mixture. In terms of mechanical properties of waste stream aggregates, PVC outperformed rubber. The results showed that 30% replacement of PVC and rubber would produce composites with 7-day compressive strengths of 35 MPa and 25 MPa, respectively, which can be used to produce high-load bearing structures. The Energy-dispersive X-ray Spectroscopy (EDX) was performed to detect chloride leaching from PVC aggregates, where results indicated that no leaching had occurred after more than 90 days of casting. Regarding the carbon emission, the carbon footprint of AAM composites is decreased by using the polymeric fractions in place of sand. The developed composites of this study can be used safely in non-load bearing structural elements with promising physical and mechanical performance.

Colour‐switchable and photoluminescent polyvinyl chloride for multifunctional smart applications

Recycled polyvinyl chloride (PVC) waste was used to prepare transparent materials with long-lasting phosphorescence, photochromic activity, hydrophobicity, strong optical transmission, ultraviolet (UV) light protection, and stiffness. Lanthanide-activated aluminate (LaA) microparticles were prepared using a high temperature solid-state procedure, and were subjected to top-down grinding technology to produce lanthanide-aluminate nanoparticles (LaAN). Laminated PVC bottles were shredded into a transparent plastic matrix, which was combined with LaAN and drop casted to produce smart materials for various applications. Smart windows and photochromic film for smart packaging can be made from recycled PVC waste by immobilizing it with various ratios of LaAN. Long-lasting phosphorescent translucent PVC smart windows and films need LaAN to be evenly dispersed in PVC without clumping. Different analytical methods were used to assess the material's morphological structure and chemical composition. Photoluminescence and decay spectra were all used to investigate the luminescence characteristics. In addition, the mechanical performance was studied. According to Commission Internationale de l'Éclairage laboratory colour measurements, this transparent PVC smart material becomes bright green under UV rays and turns a greenish-yellow in the dark. The PVC luminescence was observed to exhibit apparent emission bands at 429 and 513 nm when excited at 367 nm. Improvements were monitored in UV shielding and hydrophobicity when increasing the phosphor concentration. LaAN-immobilized PVC exhibited reversible photochromism. The present approach can be applied to various applications such as anticounterfeiting films for smart packaging, smart windows, and warning light marks.

Effect of Agave americana fibers used as reinforcement in the preparation of composites based on recycled PVC

AbstractThis work deals with the preparation and the study of a new composite obtained from a thermoplastic polymer and a vegetal fiber. The polymer used is a recycled polyvinylchloride (PVC) and the fiber used was extracted from Agave americana, a plant which grows easily under Mediterranean type climates. Prior chemical treatment of the extracted fiber was necessary to modify the surface of the fiber in order to optimize the adhesion between this fiber and the recycled PVC during the preparation of composites from these materials. For this purpose, our investigations led us to attempt various reactions modification of the surface fiber. The method that gave the best results consists of an alkaline treatment followed by a reaction with acetic anhydride. Once completed chemicals treatments of fiber, the material is mixed with the recycled PVC which serves as a matrix to prepare composites at varying rates from 5% to 30% by weight of agave modified fibers. The effects of the incorporation of raw and processed agave fibers on the mechanical, thermal and morphological properties of PVC/agave fiber composites were examined and discussed.

Thermomechanical evaluation of expanded ethylene‐propylene diene monomers rubber mixed with recycled polyvinyl chloride foams

The hazardous practice of landfilling at the end of life (EoL) of large amounts of rigid crosslinked interpenetrated network polyvinyl chloride (PVC) foams urgently requires development of effective recycling methods. In this work, PVC foam waste obtained from an industrial process was mixed with ethylene-propylene diene monomers (EPDM) rubber. The waste PVC foam naturally contained water (up to 35%) which was exploited for the expansion of EPDM rubber. For this, various amounts of recycled polyvinyl chloride (PVC) (20%, 30%, 40% by weight) were melt compounded with ethylene-propylene diene monomer rubber (EPDM) at 60 °C for 15 min. The obtained rubber mixtures were vulcanized at 160 °C for 20 min under varied compression time to create square sheets of expanded EPDM/PVC blends. The insertion of the humid PVC foam promoted the foaming of EPDM rubber up to a total porosity of 40% meanwhile geometrical density was decreased by 33% by the expansion of the rubber. Tensile tests revealed that, despite the presence of rigid PVC foams, the expanded EPDM/PVC blends manifested appreciable elongation at break values (up to 700%). Both compression set and shore A values of rubber increased with the addition of the rigid PVC foam. Moreover, all expanded blends showed low thermal conductivity values with a minimum of 0.07 W/m K.

Fabrication of a novel polymer inclusion membrane from recycled polyvinyl chloride for the real-time extraction of arsenic (V) from water samples in a continuous process

In this work, the integration of recycled polyvinyl chloride (PVC) material as a base polymer and benzalkonium chloride (BAC) as an extractant to develop low-cost Polymer Inclusion Membranes (PIM) for the extraction of Arsenic (V) from water. Notably, the production of 1 m2 of PIM may cost approximately 0.0016$. It was found that 10% of recycled PVC can be easily substituted with the base polymer without much efficiency variation. The extraction efficiency of As(V) for PVC/BAC/Dioctyl phthalate (DOP) and PVC+recycled PVC (RPVC)/BAC/DOP membranes were around only 57.8 ± 1% and 56.2 ± 1%, respectively. To overcome such a less efficient barrier, we have designed a device that increased the final extraction capability of 100 mgL-1 concentration of As(V) to ~91 ± 1% over 100 h working at the consistent operating conditions be used for wastewater treatment-based industries. Thus, the developed PIM membrane permits the transport of As(V) at higher concentrations for different natural waters spiked with 100 ppm As(V). Herein, we did not observe any matrix effect on As(V) transport efficiency with different waters except seawater, which contains a high level of ions. Furthermore, the effect of biofilm growth on the surface of PIMs has been inspected for a period of beyond 10 days. Therefore, the novel low-cost PIM device can be used in metal and alloy-based industries to extract As(V) from contaminated wastewater efficiently.

A morphological and mechanical analysis of composites from modified bagasse fibers and recycled polyvinyl chloride

AbstractBagasse raw materials were filled with recycled polyvinyl chloride composites via compounding and compression molding. In this research, unmodified, soda treated, and oxidized bagasse fibers were combined in different concentrations (5%, 10%, 15%, and 20%) with pure PVC/recycled PVC (30:70 wt). The composites surfaces were examined as well as their mechanical properties, crystallization behavior, and biodegradation properties. It was found that uniformity in the distribution of the bagasse fibers in the microstructure of the polymer composites was a major factor affecting the mechanical properties. The oxidized bagasse fiber loaded composite matrix gives the best mechanical and biodegradation properties compared with the untreated and soda treated bagasse fibers. In addition to increasing modulus and tensile strength, fiber loading also reduced hardness. X‐ray diffraction investigation illustrated that introducing fiber to a p‐ PVC/r‐PVC matrix did not affect characteristic peak positions. Packaging applications can be further developed with these composite materials.

Investigate the use of recycled polyvinyl chloride (PVC) particles in improving the mechanical properties of stone mastic asphalt (SMA)

Every year, millions of tons of industrial waste and household waste, including plastic waste, cause damage to the environment through landfilling, incineration, or dumping in open water. Polyvinyl chloride (PVC) is one of the most broadly used plastic materials in the modern world today, which can be reused in various industries by recycling waste. This matter can significantly help to improve environmental health. In this study, the impact of two kinds of recycled PVC (recycled water pipes and recycled candy wrappers) with three various percentages (2%, 3.5%, and 5% by weight of bitumen) on improving the mechanical properties of stone mastic asphalt (SMA) mixture has been investigated. For this purpose, in the present research, the Static creep test, Deformation strength test (Kim Test), Skid resistance test, indirect tensile strength (ITS) test, Semi-circular bending (SCB) fracture test, and conventional bitumen tests have been used. The conventional bitumen tests indicated that recycled PVC materials increased the softening point, viscosity, and specific gravity and reduced the penetration and the ductility of bitumen. Also, the results of mechanical tests illustrated that the addition of recycled water pipe particles and recycled candy wrapper particles improved the indirect tensile strength and increased the moisture resistance in stone mastic asphalt. However, increasing the percentage of these recycled materials to the asphalt mix had a negative effect on skid resistance. Regarding these recycled material's effects on rutting resistance, the Kim test depicted that raising the percentage of these recycled additives increases the rutting resistance of asphalt mixtures at high temperatures. Also, the static creep test revealed that the addition of these recycled PVCs reduces the accumulated permanent axial strain and increases the creep stiffness of stone mastic asphalt mixture. Moreover, based on the results of the fracture test, the addition of recycled PVC particles to the stone mastic asphalt mixture has a positive effect on the fracture energy at intermediate temperatures and intensity factor (Keff) at sub-zero temperature. Finally, in a general conclusion, it can be stated that recycled water pipe additive has a more notable influence on the mechanical properties of SMA mixture than recycled candy wrapper additive.