Article
Construction & Building Technology
Safeer Ullah, Muhammad Raheel, Rawid Khan, Muhammad Tariq Khan
Summary: This study found that partially adding waste plastic aggregates in asphalt mix reduces mixture density, increases stability, flow values, and resilient modulus, but decreases dynamic modulus values with the increase in frequency.
CONSTRUCTION AND BUILDING MATERIALS
(2021)
Article
Construction & Building Technology
Afnan Nafees, Fadi Althoey, Sherbaz Khan, Muhammad Ali Sikandar, Saleh H. Alyami, Muhammad Faisal Rehman, Muhammad Faisal Javed, Sayed M. Eldin
Summary: The industrial revolution revealed the problem of environmental degradation, with concrete and plastic causing damage to the ecosystem and unsustainable development. There is a growing interest in the academic and industrial sectors to reduce carbon emissions associated with concrete. In addition, the scarcity of global sand resources is a concern for environmentalists. To achieve sustainable development goals, alternative waste or natural materials must be used to replace cement and fine aggregate.
CASE STUDIES IN CONSTRUCTION MATERIALS
(2023)
Article
Construction & Building Technology
Muhammad Imran Khan, Muslich Hartadi Sutanto, Madzlan Bin Napiah, Salah E. Zoorob, Abdulnaser M. Al-Sabaeei, Waqas Rafiq, Mujahid Ali, Abdul Muhaimin Memon
Summary: Semi-flexible pavement surfacings, constructed by impregnating cementitious grouts into open-graded asphalt layers, offer superior load bearing and rutting resistance compared to traditional hot mix asphalt. Utilizing waste PET and gamma-irradiation allows for increased cement replacement content, enhancing product sustainability. Experimental results show that semi-flexible mixtures outperform conventional HMA in terms of various performance indicators.
CONSTRUCTION AND BUILDING MATERIALS
(2021)
Article
Polymer Science
Aliyu Usman, Muslich Hartadi Sutanto, Madzlan Napiah, Salah E. Zoorob, Nura Shehu Aliyu Yaro, Muhammad Imran Khan
Summary: The study found that samples containing 40% irradiated WPET provided better performance than mixtures containing 20% non-irradiated WPET, increasing stiffness by 27% and 21% at 25°C and 40°C, respectively, and rutting resistance by 11% at 45°C.
Article
Engineering, Environmental
K. Grigoriadis, J. Banuls-Ciscar, A. Caverzan, P. Negro, C. Senaldi, G. Ceccone
Summary: The use of & gamma;-irradiated PET waste as a partial replacement for cement in concrete can reduce CO2 emissions and divert significant quantities of PET waste from landfills. Laboratory investigations were conducted to assess the effects of different irradiation dosages and replacement levels on the consistency and mechanical strength of pastes and mortars. The study also examined the microstructure of raw PET waste and samples containing irradiated PET waste powder. Results showed that using & gamma;-irradiated PET waste does not significantly recover the mechanical strength lost compared to using non-irradiated PET waste.
Article
Polymer Science
Basheer A. Alshammari, Asma M. Alenad, Fahad S. Al-Mubaddel, Abdullah G. Alharbi, Abdulaziz Salem Al-shehri, Hanan A. Albalwi, Fehaid M. Alsuabie, Hassan Fouad, Abdel-Hamid I. Mourad
Summary: The main objective of this study is to develop hybrid high-density polyethylene (HDPE) micro- and nanocomposites and investigate their thermal, mechanical, and morphological characteristics based on the number and content of fillers. The research findings reveal that the types, sizes, quantities, and dispersion states of fillers have a significant influence on the mechanical properties of the prepared composites.
Article
Construction & Building Technology
Sunday O. Nwaubani, Lewis A. Parsons
Summary: The experimental study showed that incorporating WEEP as partial replacement of aggregates in concrete can decrease the mechanical strength and durability of the concrete, mainly due to the poor bonding between WEEP and natural aggregates caused by the smooth surface of WEEP. However, the addition of pozzolans such as metakaolin and condensed silica fume can increase the density of the concrete matrix and reduce the interfacial transition zone, thus enhancing the overall performance of mixes containing WEEP.
CASE STUDIES IN CONSTRUCTION MATERIALS
(2021)
Article
Multidisciplinary Sciences
Zheng Li, Lu An, Saurabh Khuje, Jingye Tan, Yong Hu, Yulong Huang, Donald Petit, Danial Faghihi, Jian Yu, Shenqiang Ren
Summary: Polymer dielectrics used in electrical power systems must possess specific structures such as gel-sheared polyethylene in order to achieve the desired thermal conductivity.
Article
Materials Science, Multidisciplinary
Sher Afgan, Nehar Ullah, Muhammad Sulaiman, Irshad Ali, Tanveer Iqbal, Mohammad Younas, Mashallah Rezakazemi
Summary: In this study, post-consumer PET bottles were reclaimed and reinforced with talc and VPET to develop high strength polymeric composites. The addition of talc greatly improved the mechanical properties of the composites. Mixing VPET with RPET in a specific ratio suppressed thermal degradation and hydrolysis of the developed composites.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2022)
Article
Green & Sustainable Science & Technology
Xichen Yu, Wei Fan, Elfina Azwar, Shengbo Ge, Changlei Xia, Yanli Sun, Xingzhong Gao, Xue Yang, Shujuan Wang, Su Shiung Lam
Summary: This study investigates the effects of twist levels, twist ratios, and epoxy resin impregnation rates on the tensile properties of high performance composites derived from waste cotton fibers. The optimal twist factors for producing high tensile strength in plied yarn-reinforced composites were determined. Twisting significantly influences the manufacturing of high-performance composites from waste-derived yarn, providing a new paradigm for recycling waste textiles into valuable materials.
JOURNAL OF CLEANER PRODUCTION
(2021)
Article
Materials Science, Paper & Wood
Md Imranul Islam, Md. Ishak Patwary, Solaiman Bin Ali, Md. Masum Reza, Md. Merajul Islam, Md. Tarek Hossain, Tania Taslima, Muhammad Noorur Rakib, Nilufa Yeasmin
Summary: In the apparel industry, recycling cutting waste to produce yarn is an important but underexplored area. This study aims to utilize a higher proportion of recovered cotton fibers with virgin cotton fibers in rotor spinning to manufacture recycled yarn and analyze its quality. The results show that the 60:40 blend of recycled and virgin fibers has better uniformity and less imperfection, while the 70:30 blend is more cost-effective and allows for better material recovery.
Article
Construction & Building Technology
Muhammad Rafiq Kakar, Peter Mikhailenko, Zhengyin Piao, Moises Bueno, Lily Poulikakos
Summary: The study investigated the use of waste plastics in asphalt binder and found that adding waste PE can substantially improve the binder's resistance against high temperature distresses. The performance of the binder at low temperatures was comparable to commercial standards, but attention needs to be paid to the mixture preparation method.
CONSTRUCTION AND BUILDING MATERIALS
(2021)
Article
Engineering, Environmental
Zezhou Chen, Linlin Xu, Xurui Zhang
Summary: The pyrolysis of polyethylene (PE) over Fe-modified Pt/Al2O3 catalysts in the absence of external H2 was investigated to achieve the mild conversion of PE. Results showed that a slight impregnation of Fe can improve the oil yield and light oil selectivity, and promote the formation of aromatics and alkenes. Multiple active sites including Pt, Fe, and Lewis acid site of Al2O3 work systematically to drive the tandem catalysis. Fe modification on Pt/Al2O3 plays multiple roles in catalysis, while over-impregnation of Fe can result in Pt sites deactivation.
CHEMICAL ENGINEERING JOURNAL
(2022)
Article
Chemistry, Applied
Joseph P. Hittinger, Daniel F. Shantz
Summary: This study demonstrates the feasibility of cracking LDPE using H-ZSM-5 catalysts at reaction temperatures below 300°C by varying the textual properties and acid site content of the catalysts. Increasing the external surface area of H-ZSM-5 dramatically enhances LDPE conversion. Strong Bronsted acid sites are necessary for high conversion of LDPE at this temperature range. A low molecular weight model molecule provides insight into the cracking mechanism of LDPE over MFI catalysts.
MICROPOROUS AND MESOPOROUS MATERIALS
(2022)
Article
Engineering, Environmental
Tamer Elsamahy, Jianzhong Sun, Sobhy E. Elsilk, Sameh S. Ali
Summary: A newly discovered yeast consortium isolated from termite guts has shown great potential for degrading LDPE, a common type of plastic. The consortium, made up of three yeast species, displayed a high growth rate on UV-sterilized LDPE and produced enzymes that can break down the plastic. This study highlights the use of wood-feeding termite yeasts as a novel approach for LDPE biodegradation.
JOURNAL OF HAZARDOUS MATERIALS
(2023)
Article
Mathematics, Applied
Shahid Farooq, Muhammad Ijaz Khan, Faris Alzahrani, Aatef Hobiny
Summary: This study models the transportation of Al2O3 47nm and Al2O3 36nm nanoparticles through peristalsis using entropy optimization. The conservation laws for mass, momentum, and energy are applied to simulate the flow situation and various factors such as magnetohydrodynamics, thermal radiation, and heat generation are considered. The obtained numerical results are used to analyze the flow quantities for the influential parameters in the problem.
NUMERICAL METHODS FOR PARTIAL DIFFERENTIAL EQUATIONS
(2023)
Article
Mathematics, Applied
Tie-Hong Zhao, M. Ijaz Khan, Yu-Ming Chu
Summary: Mixed convection is a heat transport mechanism in thermodynamic systems that involves the motion of fluid particles influenced by both gravity and external forces. This study focuses on the mixed convective flow of Ree-Eyring fluid between two rotating disks, considering the effects of porosity and velocity slip. The energy equation is modeled with various factors such as heat generation/absorption, dissipation, radiative heat flux, and Joule heating. The results obtained are compared with previous studies, showing good agreement. Interesting physical phenomena such as skin friction and heat transfer are also numerically calculated.
MATHEMATICAL METHODS IN THE APPLIED SCIENCES
(2023)
Article
Physics, Multidisciplinary
Wei-Mao Qian, Arshad Riaz, Katta Ramesh, Sami Ullah Khan, M. Ijaz Khan, Ronnason Chinram, M. Kbiri Alaoui
Summary: In this paper, the authors examined the impact of space voids and electrical conductivity on the flow of a pseudoplastic fluid in a curved two-dimensional plane geometry. They utilized the long wavelength and low Reynolds number approximations, as well as analytical hybrid perturbation techniques to solve the complicated coupled differential equations. The results were found to align well with the existing literature, validating the study's findings.
EUROPEAN PHYSICAL JOURNAL-SPECIAL TOPICS
(2022)
Article
Engineering, Multidisciplinary
Yun-Xiang Li, M. Israr Ur Rehman, Wen-Hua Huang, M. Ijaz Khan, Sami Ullah Khan, Ronnason Chinram, S. Kadry
Summary: This paper investigates the MHD flow of Casson nanoparticles on a porous stretchable sheet and examines the effects of non-uniform heat source/sink and viscous dissipation. Numerical results and graphs are presented to show that the velocity of nanoparticles decreases with the increase of porosity parameter and nanoparticles volume fraction, while the temperature profile is enhanced with the increase of elastic parameter and heat source parameter. Furthermore, the wall shear force decreases with the increase of nanoparticles volume fraction when Hartmann number is at its maximum.
AIN SHAMS ENGINEERING JOURNAL
(2022)
Article
Materials Science, Multidisciplinary
Osama Zaid, Syed Roshan Zamir Hashmi, Fahid Aslam, Zain Ul Abedin, Asmat Ullah
Summary: Graphene oxide and steel fibers have significant effects on the mechanical properties and durability of concrete. The addition of 0.12% graphene oxide and 2% steel fibers improves the mechanical properties and reduces permeability of concrete.
DIAMOND AND RELATED MATERIALS
(2022)
Article
Multidisciplinary Sciences
Fazle Mabood, Maria Imtiaz, Maimona Rafiq, Essam Roshdy El-Zahar, Maawiya Ould Sidi, Muhammad Ijaz Khan
Summary: This article investigates the flow of nanofluid over a variable thickened stretching sheet by incorporating non-Fourier's heat flux and non-Fick's mass flux. The study shows that an increase in the power-law index parameter enhances the fluid flow, heat, and mass transfer.
Review
Construction & Building Technology
Dawei Yang, Jiahui Zhao, Waqas Ahmad, Muhammad Nasir Amin, Fahid Aslam, Kaffayatullah Khan, Ayaz Ahmad
Summary: The disposal of waste eggshells has negative impacts on the environment and human health. However, eggshell powder has the potential to be used as a partial substitute in cementitious materials. This study conducted a scientometric analysis to evaluate the use of eggshell powder in cementitious materials and discussed their mechanical and durability properties. The study highlighted the various factors influencing the performance of cementitious materials, such as CaO content, particle size, and replacement level of eggshell powder. It also suggested improving the grinding and calcination process to obtain better eggshell powder.
CONSTRUCTION AND BUILDING MATERIALS
(2022)
Article
Construction & Building Technology
Fahid Aslam, Osama Zaid, Fadi Althoey, Saleh H. Alyami, Shaker M. A. Qaidi, Jesus de Prado Gil, Rebeca Martinez-Garcia
Summary: The disposal of waste from coal plants and waste glass is causing environmental problems, and this research suggests using fly ash and waste beverage glass as substitutes in concrete to improve its properties and durability.
STRUCTURAL CONCRETE
(2023)
Article
Engineering, Multidisciplinary
Salman Ahmad, Osama Dawood, Maha M. A. Lashin, Safeer Ullah Khattak, Muhammad Faisal Javed, Fahid Aslam, M. Ijaz Khan, Mohamed Abdelghany Elkotb, Turki M. Alaboud
Summary: The experimental research focused on using LDPE waste plastic as a binding material in producing LDPE bonded sand paver blocks. The addition of coconut fiber at 3% improved compressive strength by 18.4% and reduced water absorption by 54.1%. The best results were achieved with an LDPE to sand ratio of 30:70 and the finest sand particles.
AIN SHAMS ENGINEERING JOURNAL
(2023)
Review
Green & Sustainable Science & Technology
Abdul Muqeet Shah, Rida Hameed Lodhi, Muhammad Faisal Javed, Michal Jasinski, Elzbieta Jasinska, Miroslava Gono
Summary: The usage of plastic materials is increasing day by day in our daily life, and while they have benefits, the disposal of waste plastic materials has become a serious problem. Plastic use in roads enhances road construction, extends road life, and improves the environment. This research reviews the use of waste plastics in asphalt pavement, examining properties such as stability, flow, and fatigue to boost their usage. It is concluded that the use of waste plastic in asphalt pavement enhances road quality, benefits the environment, and is cost-effective for underdeveloped countries.
Article
Green & Sustainable Science & Technology
Rukhshanda Rehman, Muhammad Sagheer Aslam, Elzbieta Jasinska, Muhammad Faisal Javed, Miroslava Gono
Summary: This paper discusses the technical aspects of urban drinking water systems (UDWS), focusing on the design, construction, operation, and maintenance factors. A set of guidelines for evaluating the status of various sub factors in a quantitative format was developed through involving stakeholders. It is concluded that a transdisciplinary framework, stakeholder involvement, and adopting appropriate processes and techniques can improve the sustainability of stressed urban water systems.
Article
Chemistry, Analytical
S. S. Zafar, Ayman Alfaleh, A. Zaib, Farhan Ali, M. Faizan, Ahmed M. Abed, Samia Elattar, M. Ijaz Khan
Summary: Physiological systems and biological applications in the past 15 years heavily rely on microscale and nanoscale fluxes. Microchannels have been used for diagnostic assays, cell adhesion and molecular transport studies, and mimicking circulatory system flow. MHD boundary flow has wide applications in engineering and technology, including power generation, polymer industry, flow meters, pumps, and filament spinning. This investigation focuses on the Magnetohydrodynamic (MHD) flow of Prandtl nanofluid, involving mixed convection, energy activation, microorganism, and chemical reaction. The study presents numerical outcomes and graphs on velocity profile, temperature, mass concentration, and microorganism density, considering various parameters like Prandtl fluid parameter, elastic fluid parameter, magnetic field, mixed convection parameter, activation energy, chemical reaction, Brownian motion, thermophoretic force, Prandtl number, and Schmidt number. The results show that the Prandtl fluid parameter and elastic fluid parameter enhance the velocity profile, while the Prandtl fluid parameter reduces the thermal rate with increasing concentration profile. Activation energy exhibits the opposite trend. The obtained numerical outcomes are compared with existing statistics and show good agreement in limiting cases.
Article
Materials Science, Multidisciplinary
Sohaib Nazar, Jian Yang, Muhammad Ashraf, Fahid Aslam, Muhammad Faisal Javed, Sayed M. Eldin, Jianhe Xie
Summary: The study investigates the influence of hydrated lime content and activator dosage on the fresh and hardened properties of one-part alkali-activated mortar based on fly ash and hydrated lime. The results show that the addition of FA/LM-based AAM enhances the reactivity and increases the compressive strength. Furthermore, the lime content affects the rheological properties, and the activator dosage affects the setting time and durability of AAM.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2023)
Article
Mathematics, Applied
M. Ijaz Khan, Sumaira Qayyum, Yu-Ming Chu, Seifedine Kadry
Summary: This article considers the Marangoni convective flow of nanofluid and entropy generation minimization. Equations are constructed for the Buongiorno model of nanofluid and the flow is generated by a rotating disk. The effects of activation energy, nonlinear mixed convection, and MHD are also taken into consideration. Ordinary differential equations are formed using appropriate variables and results are obtained using the Shooting method. The results of temperature, axial velocity, entropy, radial velocity, concentration, and Bejan number are discussed through graphs.
NUMERICAL METHODS FOR PARTIAL DIFFERENTIAL EQUATIONS
(2023)
Article
Multidisciplinary Sciences
Sami Ullah Khan, Usman, Kamel Al-Khaled, Syed Modassir Hussain, Abuzar Ghaffari, M. Ijaz Khan, M. Waqar Ahmed
Summary: In the era of nano-engineering, the use of nanoparticles in base liquids improves thermal performance. This study focuses on the impact of partial slip and temperature-dependent viscosity in bioconvection assessment of Maxwell nanofluid. Numerical analysis shows excellent confirmation against previous investigations with graphical exploration of flow parameters for velocity, temperature, concentration, and microorganisms.
ARABIAN JOURNAL FOR SCIENCE AND ENGINEERING
(2022)
