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Current Issue [Vol. 09, No. 11] [November 2023]

Paper Title :: Effects of Partial Replacement of Cement with Supplementary Cementious Material of Palm Fiber Ash on the Properties of Concrete
Author Name :: Ikri Samuel Obokparo and Okpoko Juliana Selimat
Country :: Nigeria
Page Number :: 01-07
This study presents an overview of the work done in determining the impacts of palm fiber ash when used in conjunction with cement in the production of concrete. Four distinct percentage replacements were employed (from 0% to 15%). A mix design of 1:2:4 was used. 36 cubes in all were cast, 9 for the standard controls and 9 for each of the replacement percentages from 5 to 15%. All cubes underwent a 7, 14, and 28-day water curing process. The slump test result showed that the workability of the concrete decreased as palm fiber ash increased. The results also indicate that the compressive strength of palm fiber ash concrete increased as the percentage and curing age increased. 5% replacement obtained 7.96N/mm2, 8.31 N/mm2 and 8.83 N/mm2 for 7, 14 and 28 days correspondingly. 10% replacement obtained 7.34 N/mm2, 8.81 N/mm2 and 10.37 N/mm2 at 7, 14 and 28 days respectively. The final replacement percentage (15%) obtained 8.06 N/mm2, 10.66 N/mm2 and 11.17 N/mm2 at 7, 14 and 28 days.The aforementioned replacement was compared to the standard control (0% palm fiber ash) which obtained a compressive strength of 11.23N/mm2, 11.83 N/mm2 and 11.85 N/mm2 for 7, 14 and 28 days respectively. Although the compressive strength decreased when replacements were added, it was discovered that the percentage replacement of 15% produced a compressive strength that was 74.46 percent of the target strength and can be applied for plain concrete cement works. This study demonstrated that palm fiber ash is an effective partial cement material that can help cut down on the waste that the oil refining industries generate, hence reducing environmental pollution and producing concrete for sustainable development.
Key Words: Palm Fiber Ash, Percentage Replacement, CompressiveStrength, Cementitious Materials, Environmental Pollution
[1]. Ishak, A., & Ali (2017).“Decision Support Model for Selection Technologies in Processing of Palm Oil Industrial Liquid waste”NASA ADS, 277, 012012.https://doi.org/10.1088/1757-899X/277/1/012012.
[2]. Jaturapitakkul, C., K. Kiattikomol, W. Tangchirapat and T. Saeting, 2007. Evaluation of thesulfate resistance of concrete containing palm oil fuel ash. Construction and Building Materials, 21(7): 1399-1405.
[3]. MegatJohari, M.A., A.M. Zeyad, N. Muhammad Bunnori and K.S. Ariffin, 2012. Engineering and transport properties of high-strength green concrete containing high volume of ultrafine palm oil fuel ash. Construction Building Material, 30: 281-288.
[4]. Rukzon, S., P. Chindaprasirt, 2009. Strength and Chloride Resistance of Blended PortlandCement Mortar Containing Palm Oil Fuel Ash and Fly Ash. International Journal of Minerals, Metallurgy and Materials, 16(4): 475-481.
[5]. Safiuddin, M.D., Jumaat, M.Z., Salam, M. A., Islam, M.S., and Hashim, R. (2010). Utilization of solid waste in construction materials. International Journal of the physical sciences. Vol.5(13), pp. 1952 – 1963.


Paper Title :: Integration and Management of Gear Quality Information Based on Cloud Services
Author Name :: Dengpan Zhang || Yibo Zheng || Xianjin Liu || Xian Zhao
Country :: China
Page Number :: 08-15
In order to overcome the challenges associated with the disorderly formatting, dispersion, and inadequate traceability of gear quality data, a research study was undertaken to explore methods for managing such data. The study focused on constructing a gear quality data model using GXML and investigating techniques for mapping this model to a gear quality database. As a result, a gear quality cloud evaluation system was developed, offering valuable data support for the efficient management and exchange of gear quality information.
Key Words: GXML; gear quality; data model; data mapping; database
[1] Várkuli M G, Vadászné Bognár G, History of Gleason Works Spiral Bevel Gear Technology. Design of Machines and Structures, 12(2), 2022, 146-152.
[2] BRUMM M, MüLLER H, Cyber physical gear production system: A vision of industry 4.0 gear production, Gear Technology, 2(1), 2018, 50-54.
[3] Hexagon, New features of Hexagon Q-DAS V12, Intelligent Manufacturing, 2019(04), 24-28.
[4] Guo XZ, Shi ZY, Introduction to the German Gear Data Interactive Format (GDE) standard, Mechanical Transmission, 42(7), 2018, 181-184.
[5] Wang Y, Yao XJ, Zhang HL, Liu RT, Wang LY, Zhang DP, Research on the definition and exchange method of gear measurement data in cloud environment, Journal of Henan University of Technology (Natural Science Edition), 2021, 40(02), 105- 110


Paper Title :: Application of the ZJ Transform to Integral Equations type Volterra – Fredholm and Integro Differentials
Author Name :: M. Sc. Zenteno Jiménez José Roberto
Country :: Mexico
Page Number :: 16-22
The following article is a continuation and is a study, application and results on the ZJ Transform to solve Volterra, Fredholm and Integro differential type Integral Equations
Key Words: ZJ Transform, Volterra Integral Equation, Fredholm Integral Equation, Integral Differential Equations
[1]. Elzaki Tarig The New Integral Transform ''Elzaki Transform'' Tarig. M. Elzaki Global Journal of Pure and Applied Mathematics ISSN 0973-1768 Volume 7, Number 1 (2011), pp. 57–64 © Research India Publications
[2]. Eman A. Mansour et al 2021 J. Phys.: Conf. Ser. 1999 012155 Application of New Transform “Complex SEE Transform” to Partial Differential Equations Fethi Bin Muhammed Belgacem and Ahmed Abdullatif Karaballi. Sumudu transform fundamental properties investigations and applications, Publishing Corporation Journal of Applied Mathematics and Stochastic Analysis Volume 2006, Article ID 91083, Pages 1–23 DOI 10.1155/JAMSA/2006/91083
[3]. H. Eltayeb, A. Kiliman, B. Fisher A new integral transform and associated distributions Integral Transforms Special Funct, 21 (5) (2010), pp. 367-379
[4]. Hassan Eltayeb and AdemKılı¸ cman. A Note on the Sumudu Transforms and Differential Equationsn
[5]. Hassan Eltayeb and AdemKılı¸ cman. On Some Applications of a New Integral Transform






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