Cleaner Materials最新文献

{"title":"Chemo-physical mechanisms of high-strength cement composites with suprastructure of graphene quantum dots","authors":"Thwe Thwe Win ,&nbsp;Lapyote Prasittisopin ,&nbsp;Rungkiat Nganglumpoon ,&nbsp;Piriya Pinthong ,&nbsp;Suthasinee Watmanee ,&nbsp;Weerachon Tolek ,&nbsp;Joongjai Panpranot","doi":"10.1016/j.clema.2024.100229","DOIUrl":"https://doi.org/10.1016/j.clema.2024.100229","url":null,"abstract":"<div><p>Recently, there has been considerable interest in utilizing various forms of graphene derivatives for producing high-strength concrete. Among these derivatives are superstructure of graphene quantum dots (GQDs), particularly in their assemblies of carbon dots, which is innovative in cement. This research investigates the impact of graphene derivatives known as supra-GQDs on the mechanical properties and microstructure analysis of cement composites, compared with the control mixture and GQDs solution. The results found that supra-GQDs exhibit enhanced mechanical characteristics. The composite containing 1.2 % supra-GQDs had higher compressive and flexural strengths than the control by 40 % and 108 %, respectively. The study also identified a microstructural bridging mechanism involving the seeding and crystal growth of the C-S-H phase, leading to refined pore structure and less nano-, meso-, and micro-pores. The measured total pore volume reduced by 30 % when compared to GQDs solution. This investigation provides novel insight into the potential of utilizing supra-GQDs in cement composites, opening promising possibilities for high-performance concrete in the construction industry.</p></div>","PeriodicalId":100254,"journal":{"name":"Cleaner Materials","volume":"11 ","pages":"Article 100229"},"PeriodicalIF":0.0,"publicationDate":"2024-02-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2772397624000133/pdfft?md5=d5e49aa3534874ee5e7b52d2e9378fda&pid=1-s2.0-S2772397624000133-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139743431","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Geopolymer using different size fractions of recycled brick-based mixed demolition waste","authors":"Aditi Roy ,&nbsp;G.M. Sadiqul Islam","doi":"10.1016/j.clema.2024.100224","DOIUrl":"10.1016/j.clema.2024.100224","url":null,"abstract":"<div><p>The hike in CO₂ emission from the cement industry calls for an alternative binder to cement. On the other hand, construction<!--> <!-->and demolition waste management is a global concern. This research aims to demonstrate the complete applicability of brick-based demolition wastes in geopolymer mortar and concrete. Ground Granulated Blast Furnace Slag (GGBS) was used with brick waste to improve performance. 3 M, 4 M and 6 M NaOH were used for mortar preparation, and 6 M NaOH was used for concrete tests. The performance of the geopolymer binder and mortar was compared with the control specimen. 5 % to 20 % incorporation of demolition waste powder (DWP) with GGBS was explored to find the optimum binder combination. A 10 % incorporation for 3 M and 15 % for 4 M and 6 M was found optimum. Then, 10 % to 100 % incorporation of brick sand was studied to examine the influence of brick-based demolition waste on the fresh and hardened properties of mortar. Sand: Binder: Alkaline activator was taken 3.375: 1: 0.45 for mortar. The workability of mortar varied with the increase of brick sand content. The flexural and compressive strengths were decreased with an increase in brick sand content for all molarities of NaOH; consequently, the water absorption increased with brick sand content. The maximum mortar compressive strength of 27 MPa was found for 10 % demolished sand with a 6 M alkali concentration. However, consistent results were obtained with a 4 M concentration. Geopolymer concrete from brick-based demolition waste was prepared using 6 M NaOH. The UPV result indicates the regular quality of the concrete cube, with acceptable capillary water absorption after 24 h. However, the compressive strength of geopolymer concrete could be useful for non-structural works, and therefore, further studies with higher strength of NaOH for geopolymer concrete are recommended.</p></div>","PeriodicalId":100254,"journal":{"name":"Cleaner Materials","volume":"11 ","pages":"Article 100224"},"PeriodicalIF":0.0,"publicationDate":"2024-02-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S277239762400008X/pdfft?md5=3522f14da2b7accd592d255b6a484ec4&pid=1-s2.0-S277239762400008X-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139892549","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Review on the mechanical properties of rubberized geopolymer concrete","authors":"Sunday U. Azunna ,&nbsp;Farah Nora Aznieta Binti Abd Aziz ,&nbsp;Noor Abbas Al-Ghazali ,&nbsp;Raizal S.M. Rashid ,&nbsp;Nabilah A. Bakar","doi":"10.1016/j.clema.2024.100225","DOIUrl":"10.1016/j.clema.2024.100225","url":null,"abstract":"<div><p>Rubberized geopolymer concrete (RuGPC) is a new, environmentally safe building material requiring less energy and carbon footmark than normal cement-based systems, which can significantly reduce global warming concerns. Using waste rubber tyres by incorporating them in concrete as a substitute for natural aggregate, helps to reduce pollution and depletion of natural resources. Research shows that incorporating waste crumb rubber in geopolymer concrete (GPC) can reduce carbon dioxide emissions by 90% compared to ordinary Portland cement (OPC) and attain sufficient and mechanical properties and durability. This paper reviews the material properties of RuGPC and the possible structural application. It can be concluded, that RuGPC can substitute normal concrete (NC) particularly due to its impact resistance, and energy absorption performance. However, more research still needs to be conducted to be able to come up with practical design standards and conduct full-scale studies on RuGPC elements structurally to promote its practicability.</p></div>","PeriodicalId":100254,"journal":{"name":"Cleaner Materials","volume":"11 ","pages":"Article 100225"},"PeriodicalIF":0.0,"publicationDate":"2024-02-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2772397624000091/pdfft?md5=720e72ccc950fe504c8c188afa9236de&pid=1-s2.0-S2772397624000091-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139822639","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Research on innovative green building materials from waste oyster shells into foamed heat-insulating bricks","authors":"Wen-Cheng Shao ,&nbsp;Chao-Ling Lu ,&nbsp;Yu-Wei Dong ,&nbsp;Jia-Wei Chen ,&nbsp;Yu-Ting Chiang","doi":"10.1016/j.clema.2024.100222","DOIUrl":"https://doi.org/10.1016/j.clema.2024.100222","url":null,"abstract":"<div><p>To avoid climate change, the world must reach net-zero carbon emissions by 2025 to achieve the goal of a sustainable environment. Improving resource efficiency is one of the important strategies to achieve a sustainable environment. Effectively recycling resources and reducing energy consumption have become important international issues today.</p><p>Therefore, this research was to recycle waste oyster shells, combined it with geopolymer technology, and added foaming agents to create an innovative building material that is 100% recyclable after use – “Foam heat-insulating bricks”, thereby reducing carbon emissions and building energy consumption. Through physical properties (apparent density, porosity, water absorption, etc.) and mechanical properties (compressive strength and flexural strength), discussed factors such as lime-sand ratio, alkaline solution concentration, foaming agent, etc., effected on the heat-insulating performance and environmental protection performance of foam heat-insulating bricks. The newly prepared foam heat-insulating bricks were also evaluated for their environmental and economic aspects according to relevant standards.</p><p>The results show that::<strong>(1)</strong> The higher the concentration of alkaline solution and the greater the proportion of lime-sand, which the mechanical properties of the finished product were the higher. Samples 10 M−55, 10 M−64 and RWITGP-60 can meet the G2 lightweight bricks standard; Samples WITGP-46, WITGP-55 and WITGP-64 can meet the roof heat-insulating brick standard. <strong>(2)</strong> The better the foaming performance, the higher the porosity and water absorption, which the thermal heat-insulating effect were better, but the worse the compressive strength and flexural strength. The foaming performance of the foaming agent is Sodium-perborate(NaBO₃) &gt; Aluminum(Al) &gt; Nothing-added(WITGP). <strong>(3)</strong> Oyster shell foamed heat-insulating bricks are 100 % recyclable, have better performance after remanufacturing, and have extremely high development potential. <strong>(4)</strong> It could pass the “Toxicity Characteristics Leaching Procedure” test and comply with Taiwan's general specifications for green building materials. <strong>(5)</strong> The heat flow resistance of adding different foaming agents is aluminum with the greatest benefit, and the order is: Aluminum (Al = 133.4)W/m² &gt; Sodium-perborate (NaBO₃ = 93.6)W/m² &gt; Nothing-added (WITGP = 90.6)W/m² &gt; Concrete (CON = 68.2)W/m². <strong>(6)</strong> The oyster shell heat-insulating bricks produces 0.473 kg of carbon dioxide. Compared with concrete heat-insulating bricks, it can reduce carbon emissions by 48.7 % and save an economic price of 451.15 yuan/brick.</p></div>","PeriodicalId":100254,"journal":{"name":"Cleaner Materials","volume":"11 ","pages":"Article 100222"},"PeriodicalIF":0.0,"publicationDate":"2024-02-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2772397624000066/pdfft?md5=77914fbbaeb01e9479bb12539aaa4a5f&pid=1-s2.0-S2772397624000066-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139713932","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Effect of tyre-derived rubber particle size on the mechanical properties of rubberised syntactic foam","authors":"Nathaphon Buddhacosa ,&nbsp;Joel Galos ,&nbsp;Akbar Khatibi ,&nbsp;Raj Das ,&nbsp;Everson Kandare","doi":"10.1016/j.clema.2024.100223","DOIUrl":"https://doi.org/10.1016/j.clema.2024.100223","url":null,"abstract":"<div><p>This paper presents research findings on the influence of tyre-derived rubber particle size on the mechanical properties of rubberised syntactic foam manufactured through stir casting. The study examined how the rubber particle size affected the shear, in-plane compression, and through-thickness compression properties, as well as the flexural properties of sandwich composites with rubberised syntactic foam core. Rubber particles of various sizes (&lt;150 µm, 150–250 µm, 250–425 µm, and &gt;425 µm) were integrated into the syntactic foam at both low (9 wt%) and high (23 wt%) concentrations. Rubber particles measuring less than 150 µm, promoted agglomeration and increased void volume due to elevated viscosity, leading to a reduction in the mechanical properties of the rubberised foam. Conversely, larger rubber particles exceeding 425 µm reduced the mechanical properties of the syntactic foam due to debonding at the matrix/rubber interface. This study identified the optimal rubber particle size for achieving the highest mechanical properties in rubberised foam, which falls within the range of 150–425 µm. This research demonstrates the sustainable development of multifunctional composites from recovered waste tyres.</p></div>","PeriodicalId":100254,"journal":{"name":"Cleaner Materials","volume":"11 ","pages":"Article 100223"},"PeriodicalIF":0.0,"publicationDate":"2024-02-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2772397624000078/pdfft?md5=203ff9bf8cbca5b0ceb820840c098a21&pid=1-s2.0-S2772397624000078-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139709936","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Green concrete materials selection for achieving circular economy in residential buildings using system dynamics","authors":"Heba Marey ,&nbsp;Gábor Kozma ,&nbsp;György Szabó","doi":"10.1016/j.clema.2024.100221","DOIUrl":"https://doi.org/10.1016/j.clema.2024.100221","url":null,"abstract":"<div><p>Increasing the number of residential buildings due to rapid urbanization growth has led to the massive consumption of concrete materials and significant negative environmental impacts worldwide. Properly selecting green concrete (GC) materials in residential projects can promote sustainable construction practices and achieve a circular economy (CE). This paper aims to identify and analyze the parameters affecting GC material selection based on CE principles by developing a system dynamic (SD) model to investigate the environmental and economic benefits during the construction process. The system dynamic-based framework (SD-BF) is used to investigate the simulation interaction of the variables between the GC original scenario and several hypothetical scenarios through the simulation process, including fly ash concrete (FA) and recycled aggregate concrete (RAC). The causal loop diagrams (CLD) and stock and flow (SF) diagrams are created to investigate the inner relations among the GC variables that can achieve CE. The SD model was applied for a residential building case study in New Cairo City, Egypt, using Vensim to simulate and analyse the most appropriate GC scenarios regarding cement, natural aggregate, CO₂ emissions, cost-effectiveness, and waste generation. The results showed that using various concrete scenarios could enhance the GC selection for CE principles, in which cement reduction is the most effective variable, and the reduction reached 19.8% and 11.4% in the most optimum scenarios, while the natural aggregate (NA) reduction reached 19.1% compared with the original scenario. This development is vital for achieving CE and closing the concrete materials loop, which helps construction decision-makers select suitable concrete materials for future residential projects.</p></div>","PeriodicalId":100254,"journal":{"name":"Cleaner Materials","volume":"11 ","pages":"Article 100221"},"PeriodicalIF":0.0,"publicationDate":"2024-02-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2772397624000054/pdfft?md5=84987f6417262e94b2a0bdd957e6371f&pid=1-s2.0-S2772397624000054-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139675647","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"The world of plastic waste: A review","authors":"P.G.C. Nayanathara Thathsarani Pilapitiya,&nbsp;Amila Sandaruwan Ratnayake","doi":"10.1016/j.clema.2024.100220","DOIUrl":"https://doi.org/10.1016/j.clema.2024.100220","url":null,"abstract":"<div><p>People discover various materials from time to time that break the boundaries of traditional materials. Plastic is a revolutionized material, and is referred to as “a material with 1,000 uses”. This review summarized up-to-date research on plastic and its waste pollution. Plastic has a domain throughout human life with its versatile properties such as lightweight, high durability, flexibility, and low production cost. This article describes the applications, benefits, production, consumption, and classifications of plastics. Plastic commercialization began with the Second World War and grew all over the world within less than a century. The global annual production of plastic is more than 359 million tons. Despite all the benefits, plastics cause severe environmental and public health issues. Accordingly, this study addresses the major issues of plastic waste on the environment and human health. Plastics can degrade into micro to nano sizes, and those fine particles are more spreadable in air, water, and soil. Therefore, both terrestrial and aquatic animals go through various negative impacts such as ingestion, entangling, ulcers, low reproduction, and oxidative stress. Microplastics also degrade human health due to cardiovascular diseases, chronic kidney disease, birth defects, cancer, etc. The closing contains the developed end-of-life options (e.g., recycling and reprocessing, incineration with energy recovery, modification reuse, value addition, and landfilling) of biodegradable and non-biodegradable plastic wastes. Several international, regional/national level legislations and policies/concepts (e.g., plastic trade, 3R policy, and circular economy) are available to manage plastic and plastic waste generation. Plastic waste management is also discussed offering practical insights and real-world scenarios. Solutions and challenges in effective plastic waste management guide to create a more sustainable and environmentally responsible approach. Finally, this review article highlights the importance of judicious decisions and the involvement of all stakeholders to overcome the plastic waste crisis.</p></div>","PeriodicalId":100254,"journal":{"name":"Cleaner Materials","volume":"11 ","pages":"Article 100220"},"PeriodicalIF":0.0,"publicationDate":"2024-01-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2772397624000042/pdfft?md5=b66fe2f079853373d8430792715bdf64&pid=1-s2.0-S2772397624000042-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139653872","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Effect of collated fly ash, GGBS and silica fume on index and engineering properties of expansive clays as a sustainable landfill liner","authors":"Manikanta Devarangadi ,&nbsp;Srikanth Vuppala ,&nbsp;M. Uma Shankar ,&nbsp;Mavinakere Eshwaraiah Raghunandan","doi":"10.1016/j.clema.2024.100219","DOIUrl":"10.1016/j.clema.2024.100219","url":null,"abstract":"<div><p>The effect of supplementary cementitious materials (SCMs) such as fly ash (FA), GGBS and silica fume (SF) on the geotechnical index and engineering properties of expansive clays (EC) are studied in this research work. This manuscript aims to determine the workability (consistency limits (CL)), swellability (free swell index (FSI)), compaction properties, strength characteristics (UCS) and hydraulic conductivity (HC) of varied eighteen mix proportions of FA-EC (P-series), FA-GGBS-EC (Q-series) and FA-GGBS-SF-EC (R-series) are experimentally studied as a bottom liner in landfills. From the test results, CL and FSI significantly decreased in P, Q and R series, this is due to the effect of flocculation, a process that increases the average particle size of mix blends and also depletion of the double-diffusive layer thickness of EC by promoting the Ca2+ ions in the pore water from SCMs. The compaction parameters such as optimum moisture content decreased in all the series, due to the higher flocculation of mixes. However, maximum dry unit weight increased in Q and R and decreased in the P series. The UCS values increased with an increase in optimum SCMs quantities and with curing intervals tested at 0, 7, 14 and 28 days. The higher UCS value is attained at 40 %FA with EC (i.e. P2), 60 %FA-GGBS with EC (i.e. Q3) and 60 %FA-GGBS-SF with EC (i.e. R3) in R-series which confirmed to be optimum due to the loss of cementation action/reduced cohesion in the matrix. In the case of HC, P2, Q3 and R3 mixes are confirmed to be optimum and fall under the criterion standards of landfill liner as per USEPA recommendation. Overall, this work proves to be a novelty and shows the feasibility of various collated SCMs blended with EC as landfill liner material, furthermore, these mixes are optimized to combine with EC to create a sustainable landfill liner that fits with the United Nations sustainable goals of 2030</p></div>","PeriodicalId":100254,"journal":{"name":"Cleaner Materials","volume":"11 ","pages":"Article 100219"},"PeriodicalIF":0.0,"publicationDate":"2024-01-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2772397624000030/pdfft?md5=5311f6866280941c9d10a5dd10939cbd&pid=1-s2.0-S2772397624000030-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139631790","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Production of polyhydroxyalkanoate (pha) by pseudomonas aeruginosa (ol405443) using agrowastes as carbon source","authors":"Oluwafemi Adebayo Oyewole ,&nbsp;Shehu Usman Abdulmalik ,&nbsp;Asiya Onozasi Abubakar ,&nbsp;Konjerimam Ishaku Chimbekujwo ,&nbsp;Yemisi Dorcas Obafemi ,&nbsp;Benjamin Oyegbile ,&nbsp;Olabisi Peter Abioye ,&nbsp;Olalekan David Adeniyi ,&nbsp;Evans Chidi Egwim","doi":"10.1016/j.clema.2024.100217","DOIUrl":"https://doi.org/10.1016/j.clema.2024.100217","url":null,"abstract":"<div><p>The search for cost-effective substrates for the manufacturing of valuable products has led to the use of agrowastes as alternative sources of reducing sugar. Numerous bacteria build up polyhydroxyalkanoates (PHAs) as storage materials. This research aimed to produce PHA from <em>Pseudomonas aeruginosa</em> using agrowastes as carbon sources. The agrowastes (corncob, plantain peduncle and sugarcane bagasse) were treated with 1 % NaOH and analysed. The agrowastes were hydrolysed using cellulase produced by <em>Aspergillus niger</em> isolated from agrowastes dumpsite. The agrowaste hydrolysate was used in place of glucose for PHA production in a submerged fermentation. Nile blue A test and Sudan black test showed positive results for the isolate with a bright orange fluorescence on irradiation with UV light and was identified as <em>Pseudomonas aeruginosa</em> (accession number 0L405443). Sugarcane bagasse gave the highest potential for PHA production with PHA values of 5.86 mg/mL, followed by corn cob (5.29 mg/mL) and the least was obtained in plantain peduncle with a yield of 3.58 mg/mL. The findings using response surface methodology (RSM) for optimization show that all the four factors (carbon source, pH, temperature and incubation time) were statistically significant (P &lt; 0.05) for PHA production. The optimum PHA production was attained under culture conditions of 24 h, 38 °C, pH 6.5, and 3 % carbon source. The PHA produced from 10 L of MSM was quantified to be 10.57 g under these conditions. The study revealed that <em>Pseudomonas aeruginosa</em> 0L405443 is a local bacterial strain utilized for the production of PHA using affordable, sustainable and easily available agrowastes hydrolysate as substrate.</p></div>","PeriodicalId":100254,"journal":{"name":"Cleaner Materials","volume":"11 ","pages":"Article 100217"},"PeriodicalIF":0.0,"publicationDate":"2024-01-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2772397624000017/pdfft?md5=180681643151d76fe04513d70bcf967a&pid=1-s2.0-S2772397624000017-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139493446","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Sustainable utilization of landfill mined soil like fraction in subbase layer for asphalt road applications","authors":"A. Sandeep Reddy,&nbsp;Mahi Patil,&nbsp;Parishi H. Dalal,&nbsp;Kannan K.R. Iyer,&nbsp;Trudeep N. Dave","doi":"10.1016/j.clema.2024.100218","DOIUrl":"10.1016/j.clema.2024.100218","url":null,"abstract":"<div><p>The scarcity of natural resources, and energy demand/carbon footprints related to their processing and transportation, has led to the quest for alternate materials for road/pavement construction and other infrastructure development. On the other side, landfill mined soil like fraction (LMSF) forms significant proportion of mined legacy landfill waste that exists at different locations around the world; however, it has found limited applications. The present study explores the utilization of LMSF in development of novel asphalt road subbase layers for resilient road infrastructure. 30–60% of LMSF replacement has been studied, and findings based on gradation analysis, compaction tests and California bearing ratio (CBR) tests are quite encouraging. Most combinations of subbase layers studied exceed the design requirements for low volume roads in Indian scenario (rural and outer urban roads); while 30% LMSF in wet mix macadam satisfies the requirements of Indian and other international codes. The cost-benefit analysis shows significant saving in material cost due to utilization of LMSF in road subbase layer. The potential utilization of low cost and sustainable LMSF in asphalt road subbase layer would allow design of superior roads with CBR exceeding design values, resulting in better life cycle performance of road infrastructure with high resilience to fatigue effects, water inundation and overloading conditions.</p></div>","PeriodicalId":100254,"journal":{"name":"Cleaner Materials","volume":"11 ","pages":"Article 100218"},"PeriodicalIF":0.0,"publicationDate":"2024-01-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2772397624000029/pdfft?md5=933c8727c8c7671d451ad6ddecf3f6be&pid=1-s2.0-S2772397624000029-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139540648","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}