Pouyan PressComputational Engineering and Physical Modeling2588-69593120200101Fragility of a Weir Structure due to Scouring11010442910.22115/cepm.2020.214539.1077ENSaran SrikanthBoddaNorth Carolina State UniversityAbhinavGuptaCivil Engineering, Professor, North Carolina State University, Raleigh, US.Bu SeogJuDepartment of Civil Engineering, KyungHee University, Gyeonggi-do, Republic of KoreaWooYoungJungInstitute for Disaster Prevention, Gangneung-Wonju National University, Gangneung, Republic of Korea.Journal Article20200104In recent years, several catastrophic flooding accidents have occurred at critical facilities. The Arkema chemical plant in Texas suffered chemical explosion because hurricane Harvey related flooding resulted in a loss of power supply. Fukushima Daiichi nuclear disaster occurred due to loss of external and backup power supplies following the tsunami induced flooding. In order to prevent flooding at such critical and toxic facilities, flood protection systems such as weir structures or floodwalls are being planned or have been constructed. The risk of flooding at critical facilities which are located on the downstream side of a flood defense structure is directly related to the fragility of flood defense structure. All the flood defense structures are subjected to scour around their foundations. The stability of the foundation is endangered when the scour depth becomes significant at the downstream toe. This paper explores the effect of scouring on the fragility of a concrete weir structure.Pouyan PressComputational Engineering and Physical Modeling2588-69593120200101Application of FOSM and Chebyshev’s theorem concept to predict compressive strength attributes of Corncob ash embedded cement concrete112010443010.22115/cepm.2020.212079.1075ENB S KKeerthi GowdaDepartment of Civil Engineering, CPGS, Visvesvaraya Technological University, Mysuru 5700290000-0002-7612-8487M SDakshayiniStructural Engineering Division VTU PG Studies Ring road Near Hanchya Satagalli Bus Depot Mysore
Hanchya satagalliJournal Article20191216In the present study the physical and mechanical properties of Corn Cob Ash (CCA) embedded cement concrete of mix proportions 1:1.6:2.6 and water-cement ratios of 0.45 were examined and compared with conventional cement concrete. A total of 96 concrete cubes of size 150 × 150 × 150 mm³ with different percentages by volume of CCA to ordinary Portland cement of grade 30Mpa in the order 0:100, 5:95, 10:90 and 15:85 were cast, tested and their physical and mechanical properties were determined. The specific gravity of the CCA was 3.15. The cubes were cured in a laboratory setup and compressive strength measures of 7, 14, 21, 28, 35, 42 and 56 days were observed. The compressive strength tests on cement concrete by replacing cement with 5% of CCA showed quite satisfactory results at 28days, 35days, 42days and 56days curing period compared to conventional concrete. But 15% CCA replacing for cement did not meet the satisfactory strength attributes. The probability analysis for compressive strength attributes were studied and presented. Chebyshev’s theorem was utilised to find how spread the data is from mean. First order second moment method was used to found mean compressive strength and standard deviations. As the CCA replacement level increased, the compressive strength and workability decreased. However the concrete cubes have gained strength with age. The results indicate that CCA is an adoptable mineral admixture and pozzolan with the substitution level of 5% cement, with no unfavourable consequences for other different attributes of the hardened cement concrete.Pouyan PressComputational Engineering and Physical Modeling2588-69593120200101Detecting of human behavioral pattern in rock, paper, scissors game using artificial intelligence213010444210.22115/cepm.2020.215668.1081ENMaryamGhasemiMSc Student, Department of Electrical Engineering, Faculty of Energy, Kermanshah University of Technology, Kermanshah, IranGholam HosseinRoshaniAbdolrezaRoshaniAssistant Professor, Department of Industrial Engineering, Faculty of Engineering Management, Kermanshah University of Technology, Kermanshah, IranJournal Article20200113As entertainment tools, computer games are important phenomena in the world, which are considered as a popular medium, an effective educational solution and a considerable economy resource. In this paper, Multi-Layer perceptron (MLP) neural network was used to detect human behavior pattern in rock, paper, scissors game. The similarity of artificial neural networks (ANNs) to the human brain is the main motivation of this study. MATLAB software was used to implement the network code. These codes consisted of two phases: 1) training the ANN to learn the human behavioral pattern considering forty games. 2) real play against a human by doing ten games. After the implementation of the network, its effectiveness in detecting human behavioral patterns was investigated. The network was tested on 40 people (20 women and 20 men). Each player played with the target network in three stages. The results of this study showed that the win percentage of computers with MLP neural network was 57.5% for men and 60.8% for women. While the percentage of the computer without neural networks and with random selections in 60 games was 52.5% for men and 42.5% for women.Pouyan PressComputational Engineering and Physical Modeling2588-69593120200101MODELLING OF THE COMPRESSIVE STRENGTH OF PALM-NUT-FIBRE CONCRETE USING SCHEFFE’S THEORY314010354610.22115/cepm.2020.212999.1076ENGEORGE UWADIEGWUALANEMEMichael Okpara University of Agric Umudike0000-0003-4863-7628ElvisMbadikeMichael Okpara University of Agriculture, Umudike, P. M. B. 7267, Umuahia 440109, Abia State, NigeriaJournal Article20191224In this research study, a mathematical model is developed to optimize the palm-nut-fiber reinforced concrete’s compressive strength using Scheffe's (5,2) simplex-lattice design. Palm-nut-fiber which is an agricultural residue obtained after the processing of palm-oil is utilized as the fifth component in concrete consisting of water, cement, fine and coarse aggregates. Fibers are used to help fresh concrete to keep it from cracking and plastic shrinkage and also for a concrete structure of complicated or complex geometry where the use of the conventional rebar will not work. The compressive strength of Palm-nut-fiber were obtained for the different componential ratios using Scheffe’s Simplex method and for the the control points which will be utilized for the validation of the Scheffe’s model. The model’s adequacy was tested using student’s t-test and ANOVA at 5% critical value. The statistical result indicates a good relationship between the values obtained from the developed Scheffe’s model and the control laboratory results. The maximum value of compressive strength of the palm-nut fiber concrete obtained was 31.53Nmm2 corresponding to mix ratio of 0.525:1.0:1.45:1.75:0.6 and minimum value of compressive strength obtained was found to be 17.25Nmm2 corresponding to mix ratio of 0.6:1.0:1.8:2.5:1.2. For water, Limestone Portland cement (LPC), fine aggregate, coarse aggregate and palm nut fiber respectively. Using the developed Scheffe’s simplex model, the proportion of the mixture ingredients to a certain prescribed compressive strength value can be estimated with a high degree of accuracy and also providing the solution in less amount of time.Pouyan PressComputational Engineering and Physical Modeling2588-69593120200101The Effect of Zeolite on Different Mechanical Properties and Permeability of Self-compacting Concrete415010586510.22115/cepm.2020.214817.1079ENFarhadPirmohammadi Alishah Faculty of Civil Engineering, Islamic Azad University, Shabestar Branch, Shabestar, IranJournal Article20200106Today using alternative sources in concrete productions is important, due to its Economical and environmental considerations. Pozzolans are one of these resources which decrease the environmental pollutions and production costs of concrete structures. Zeolite is an additive to cement clinker that if added to the high quality cement and concrete, it can be effective in enhancing the quality of cement and concrete resulting from high quality controlled precision and repeated sampling and continuous testing. Concrete creates the cement-free concrete without any additives. Documentary reports and rigorous scientific studies have shown that good pozzolan can, in addition to increasing the chemical resistance of concrete, eliminate the defects caused by the use of conventional cement in concrete and due to the diversity of water and soil use in different areas. In this study, the effect of Zeolite in different grades of cement on the mechanical properties and permeability of concrete at 7 and 28 days of age is investigated. It was found that with increasing cement grade, the water absorption rate of concrete increased. Also, the effect of Zeolite on the permeability of concrete samples is increased by increasing the pozzolan water absorption rate. Also, the effect of cement grade on the compressive strength of concrete was found to decrease with increasing concrete grade.