ORIGINAL_ARTICLE
Fragility of a Weir Structure due to Scouring
In 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.
https://www.jcepm.com/article_104429_dc87cc58e2a7f90187279bab30cd0072.pdf
2020-01-01
1
15
10.22115/cepm.2020.214539.1077
Flooding
Seepage analysis
Finite element model
probabilistic risk assessment
Saran Srikanth
Bodda
ssbodda@ncsu.edu
1
Center for Nuclear Energy Facilities and Structures, CCEE, North Carolina State University, Raleigh, NC, USA
LEAD_AUTHOR
Abhinav
Gupta
agupta1@ncsu.edu
2
Center for Nuclear Energy Facilities and Structures, CCEE, North Carolina State University, Raleigh, NC, USA
AUTHOR
Bu Seog
Ju
bju2@khu.ac.kr
3
Department of Civil Engineering, KyungHee University, Gyeonggi-do, Republic of Korea
AUTHOR
WooYoung
Jung
woojung@gwnu.ac.kr
4
Institute for Disaster Prevention, Gangneung-Wonju National University, Gangneung 210-702, Republic of Korea
AUTHOR
[1] FEMA P-1090 / DR-4285-NC. Hurricane Matthew in North Carolina Dam Risk Management Assessment Report. 2017. n.d.
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[2] Kayen R, Collins B, Gibbons H. USGS scientists investigate new Orleans levees broken by Hurricane Katrina. USGS Https://Soundwaves Usgs Gov/2006/01/ Accessed August 2006;15:2017.
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[5] Khassaf SI, Al-Adili AS, Rasheed RS. Seepage analysis underneath Diyala weir foundation. Proc. Thirteen Int. Water Technol. Conf. IWTC, Hurghada, Egypt, Citeseer; 2009, p. 12–5.
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[6] Olonade KA, Agbede OA. A study of seepage through oba dam using finite element method. Civ Environ Res 2013;3:53–60.
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[8] Sandhu HK. Flooding Fragility of Concrete Gravity Dam-Foundation System 2015.
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[10] Bardet J-P, Tobita T. A practical method for solving free-surface seepage problems. Comput Geotech 2002;29:451–75.
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[11] Broaddus MR. Performing a steady-state seepage analysis using SEEP/W: a primer for engineering students. 2015.
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[12] Elnikhely EA. Investigation and analysis of scour downstream of a spillway. Ain Shams Eng J 2018;9:2275–82. doi:10.1016/j.asej.2017.03.008.
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[13] Ju BS, Jung W. Evaluation of seismic fragility of weir structures in South Korea. Math Probl Eng 2015;2015.
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[14] Kratochvíl J, Bachorec T. Numerical Modeling of Nonstationary Free Surface Flow in Embankment Dams. Brno Univ Technol CZ 2004.
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[16] S Ismaeel K, Noori BMA. Evaluation of seepage and stability of duhok dam. AL-Rafdain Eng J 2011;19:42–58.
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[18] Hasani H, Mamizadeh J, Karimi H. Stability of slope and seepage analysis in earth fills dams using numerical models (Case Study: Ilam Dam-Iran). World Appl Sci J 2013;21:1398–402.
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[19] Sommai L. Vertical and horizontal permeability of compacted soils. 1992 n.d.
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[20] Oliveto G, Comuniello V. Local scour progress downstream of low-head stilling basins 2010.
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[22] Farhoudi J, Shayan HK. Investigation on local scour downstream of adverse stilling basins. Ain Shams Eng J 2014;5:361–75. doi:10.1016/j.asej.2014.01.002.
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[23] ANSYS (R16.2) Mechanical APDL Theory Reference n.d.
23
ORIGINAL_ARTICLE
Application of FOSM and Chebyshev’s Theorem Concept to Predict Compressive Strength Attributes of Corncob Ash Embedded Cement Concrete
In 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.
https://www.jcepm.com/article_104430_20c6807c75ee399ffc0bea80e138df1b.pdf
2020-01-01
16
24
10.22115/cepm.2020.212079.1075
Workability
pozzolana
water-cement ratios
standard deviations
B S
Keerthi Gowda
keerthiresearch@yahoo.com
1
Assistant Professor, Structural Engineering, Centre for PG Studies, Mysore, Karnataka, India
LEAD_AUTHOR
M S
Dakshayini
dakidakshayini@gmail.com
2
Postgraduate Scholar, M. Tech Program in Structural Engineering, CPGS-VTU, Mysuru, India
AUTHOR
[1] Singh K, Singh J, Kumar S. A Sustainable Environmental Study on Corn Cob Ash Subjected To Elevated Temperature. Curr World Environ 2018;13:144–50. doi:10.12944/CWE.13.1.13.
1
[2] Udoeyo FF, Abubakar SA. Maize-cob Ash As Filler in Concrete. J Mater Civ Eng 2003;15:205–8. doi:10.1061/(ASCE)0899-1561(2003)15:2(205).
2
[3] Memon SA, Javed U, Khushnood RA. Eco-friendly utilization of corncob ash as partial replacement of sand in concrete. Constr Build Mater 2019;195:165–77. doi:10.1016/j.conbuildmat.2018.11.063.
3
[4] Aprianti E, Shafigh P, Bahri S, Farahani JN. Supplementary cementitious materials origin from agricultural wastes – A review. Constr Build Mater 2015;74:176–87. doi:10.1016/j.conbuildmat.2014.10.010.
4
[5] Suwanmaneechot P, Nochaiya T, Julphunthong P. Improvement, characterization and use of waste corn cob ash in cement-based materials. IOP Conf Ser Mater Sci Eng 2015;103:012023. doi:10.1088/1757-899X/103/1/012023.
5
[6] Eisa A. Properties of Concrete Incorporating Recycled Post-Consumer Environmental Wastes. Int J Concr Struct Mater 2014;8:251–8. doi:10.1007/s40069-013-0065-9.
6
[7] Mujedu KA, Adebara SA, Lamidi IO. The use of corn cob ash and saw dust ash as cement replacement in concrete works. Int J Eng Sci 2014;3:22–8.
7
[8] Shafigh P, Mahmud H Bin, Jumaat MZ, Zargar M. Agricultural wastes as aggregate in concrete mixtures – A review. Constr Build Mater 2014;53:110–7. doi:10.1016/j.conbuildmat.2013.11.074.
8
[9] Pinto J, Cruz D, Paiva A, Pereira S, Tavares P, Fernandes L, et al. Characterization of corn cob as a possible raw building material. Constr Build Mater 2012;34:28–33. doi:10.1016/j.conbuildmat.2012.02.014.
9
[10] Olafusi OS, Olutoge FA. Strength properties of corn cob ash concrete. J Emerg Trends Eng Appl Sci 2012;3:297–301.
10
[11] Pinto J, Vieira B, Pereira H, Jacinto C, Vilela P, Paiva A, et al. Corn cob lightweight concrete for non-structural applications. Constr Build Mater 2012;34:346–51. doi:10.1016/j.conbuildmat.2012.02.043.
11
[12] Utsev JT, Taku JK. Coconut shell ash as partial replacement of ordinary Portland cement in concrete production. Int J Sci Technol Res 2012;1:86–9.
12
[13] Aribo S. Effect of varying corn cob and rice husk ashes on properties of moulding sand. J Miner Mater Characterisation Eng 2011;10:1449–55.
13
[14] Pinto J, Paiva A, Varum H, Costa A, Cruz D, Pereira S, et al. Corn’s cob as a potential ecological thermal insulation material. Energy Build 2011;43:1985–90. doi:10.1016/j.enbuild.2011.04.004.
14
[15] Olonade KA, Jaji MB, Adekitan OA. Experimental comparison of selected pozzolanic materials. African J Sci Technol Innov Dev 2017;9:381–5. doi:10.1080/20421338.2017.1327931.
15
[16] Ajao KS, Ohijeagbon IO, Adekunle AS, Olusegun HD. Development of paving tiles compounded with pulverized Corncob charcoal. J Prod Eng 2016;19:101–6.
16
[17] Amin N. Use of Bagasse Ash in Concrete and Its Impact on the Strength and Chloride Resistivity. J Mater Civ Eng 2011;23:717–20. doi:10.1061/(ASCE)MT.1943-5533.0000227.
17
[18] Raheem AA, Oyebisi SO, Akintayo SO, OYENIRAN MI. Effects of admixtures on the properties of corn cob ash cement concrete. Leonardo Electron J Pract Technol 2010;16:13–20.
18
[19] El-Sayed MA, El-Samni TM. Physical and Chemical Properties of Rice Straw Ash and Its Effect on the Cement Paste Produced from Different Cement Types. J King Saud Univ - Eng Sci 2006;19:21–9. doi:10.1016/S1018-3639(18)30845-6.
19
[20] Adesanya DA, Raheem AA. A study of the workability and compressive strength characteristics of corn cob ash blended cement concrete. Constr Build Mater 2009;23:311–7. doi:10.1016/j.conbuildmat.2007.12.004.
20
[21] Adesanya DA, Raheem AA. Development of corn cob ash blended cement. Constr Build Mater 2009;23:347–52. doi:10.1016/j.conbuildmat.2007.11.013.
21
[22] Binici H, Yucegok F, Aksogan O, Kaplan H. Effect of Corncob, Wheat Straw, and Plane Leaf Ashes as Mineral Admixtures on Concrete Durability. J Mater Civ Eng 2008;20:478–83. doi:10.1061/(ASCE)0899-1561(2008)20:7(478).
22
[23] Gradinaru CM, Barbuta M, Babor D, Serbanoiu AA. Corn cob ash as sustainable puzzolanic material for an ecological concrete. Bull Transilv Univ Brasov Eng Sci Ser I 2018;11:61–6.
23
[24] Kamau J, Ahmed A, Hirst P, Kangwa J. Viability of using corncob ash as a pozzolan in concrete. Int J Sci Environ Technol 2016;5:4532–44.
24
[25] Hongthong P, Pongtornkulpanich A, Chawna K. Determination of Properties and Heat Transfer Rate through building boundary of Corn Cob Cement Material for Applying to be Construction Material. Energy Procedia 2017;138:217–22. doi:10.1016/j.egypro.2017.10.153.
25
[26] Wardhani GAPK, Nurlela N, Azizah M. Silica Content and Structure from Corncob Ash with Various Acid Treatment (HCl, HBr, and Citric Acid). Molekul 2017;12:174. doi:10.20884/1.jm.2017.12.2.382.
26
[27] Prusty JK, Patro SK, Basarkar SS. Concrete using agro-waste as fine aggregate for sustainable built environment. A review. Int J Sustain Built Environ 2016;5:312–33. doi:10.1016/j.ijsbe.2016.06.003.
27
[28] Belay S, Woldesenbet A. Study of the Potential of Ethiopian Rice Husks as a Partial Replacement of Cement. Constr. Res. Congr. 2016, Reston, VA: American Society of Civil Engineers; 2016, p. 310–20. doi:10.1061/9780784479827.032.
28
[29] Kamau J, Ahmed A, Hirst P, Kangwa J. Suitability of corncob ash as a supplementary cementitious material. Int J Mater Sci Eng 2016;4:215–28.
29
[30] Oluborode KD, Olofintuyi IO. Strength Evaluation of Corn cob ash in a blended Portland cement. Int J Eng Innov Technol 2015;4.
30
[31] Levitas VI, Roy AM. Multiphase phase field theory for temperature-induced phase transformations: Formulation and application to interfacial phases. Acta Mater 2016;105:244–57. doi:10.1016/j.actamat.2015.12.013.
31
[32] Levitas VI, Roy AM. Multiphase phase field theory for temperature-and stress-induced phase transformations. Phys Rev B 2015;91:174109.
32
[33] Levitas VI, Roy AM, Preston DL. Multiple twinning and variant-variant transformations in martensite: Phase-field approach. Phys Rev B 2013;88:54113.
33
[34] Indian standard guidelines for concrete mix proportioning IS 10262 : 2009, published by Bureau of Indian Standards, Manak Bhavan, 9 Bahadur Shah Zafar Marg, New Delhi 110002, India. n.d.
34
ORIGINAL_ARTICLE
Detecting Human Behavioral Pattern in Rock, Paper, Scissors Game Using Artificial Intelligence
As 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
https://www.jcepm.com/article_104442_336761f3c9cf58702e352cc3d8d5ab20.pdf
2020-01-01
25
35
10.22115/cepm.2020.215668.1081
Artificial Neural Networks
Multi-layer Perceptron (MLP)
Rock paper scissors game
Human behavior pattern detection
Intelligent player
Maryam
Ghasemi
maryamghasemi466@gmail.com
1
M.Sc. Student, Department of Electrical Engineering, Faculty of Energy, Kermanshah University of Technology, Kermanshah, Iran
AUTHOR
Gholam Hossein
Roshani
hosseinroshani@yahoo.com
2
Assistant Professor, Department of Electrical Engineering, Faculty of Energy, Kermanshah University of Technology, Kermanshah, Iran
LEAD_AUTHOR
Abdolreza
Roshani
a.roshani@kut.ac.ir
3
Assistant Professor, Department of Industrial Engineering, Faculty of Engineering Management, Kermanshah University of Technology, Kermanshah, Iran
AUTHOR
[1] M.A. A. Game Psychology. Payame Noor Univ First Ed (in Persian) 1993.
1
[2] Ali FF, Nakao Z, Chen Y-W. Playing the rock-paper-scissors game with a genetic algorithm. Proc. 2000 Congr. Evol. Comput. CEC00 (Cat. No. 00TH8512), vol. 1, IEEE; 2000, p. 741–5.
2
[3] Hu W, Zhang G, Tian H, Wang Z. Chaotic Dynamics in Asymmetric Rock-Paper-Scissors Games. IEEE Access 2019;7:175614–21.
3
[4] de Souza DFP, Carneiro HCC, França FMG, Lima PM V. Rock-paper-scissors WiSARD. 2013 BRICS Congr. Comput. Intell. 11th Brazilian Congr. Comput. Intell., IEEE; 2013, p. 178–82.
4
[5] Cenggoro TW, Kridalaksana AH, Arriyanti E, Ukkas MI. Recognition of a human behavior pattern in paper rock scissor game using backpropagation artificial neural network method. 2014 2nd Int. Conf. Inf. Commun. Technol., IEEE; 2014, p. 238–43.
5
[6] Salvetti F, Patelli P, Nicolo S. Chaotic time series prediction for the game, Rock-Paper-Scissors. Appl Soft Comput 2007;7:1188–96.
6
[7] Chen W-Y, Chung C-H, Heish S, Ku C-C. Rock, Paper and Scissors image identification scheme. 4th Int. Conf. New Trends Inf. Sci. Serv. Sci., IEEE; 2010, p. 748–53.
7
[8] Matsumoto Y, Yamamoto T, Honda K, Notsu A, Ichihashi H. Application of cluster validity criteria to Rock-Paper-Scissors game judgment. 2012 IEEE Int. Conf. Fuzzy Syst., IEEE; 2012, p. 1–5.
8
[9] Hasuda Y, Ishibashi S, Kozuka H, Okano H, Ishikawa J. A robot designed to play the game" Rock, Paper, Scissors". 2007 IEEE Int. Symp. Ind. Electron., IEEE; 2007, p. 2065–70.
9
[10] Gang T, Cho Y, Choi Y. Classification of rock-paper-scissors using electromyography and multi-layer perceptron. 2017 14th Int. Conf. Ubiquitous Robot. Ambient Intell., IEEE; 2017, p. 406–7.
10
[11] Fausett L V. Fundamentals of neural networks: architectures, algorithms and applications. Pearson Education India; 2006.
11
[12] Roshani GH, Roshani S, Nazemi E, Roshani S. Online measuring density of oil products in annular regime of gas-liquid two phase flows. Measurement 2018;129:296–301.
12
[13] Dehlaghi V, Taghipour M, Haghparast A, Roshani GH, Rezaei A, Shayesteh SP, et al. Prediction of the thickness of the compensator filter in radiation therapy using computational intelligence. Med Dosim 2015;40:53–7.
13
ORIGINAL_ARTICLE
Modelling of the Compressive Strength of Palm-Nut-Fibre Concrete Using Scheffe’s Theory
In 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 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.
https://www.jcepm.com/article_103546_9ac6571b1069b7143bbeb110cc942380.pdf
2020-01-01
36
52
10.22115/cepm.2020.212999.1076
Scheffe Model
Palm-nut-fiber
concrete compressive strength
MATLAB
Simplex method
George
Alaneme
tinz2020@gmail.com
1
Department of Civil Engineering, Michael Okpara University of Agriculture, Umudike, P. M. B. 7267, Umuahia 440109, Abia State, Nigeria
LEAD_AUTHOR
Elvis
Mbadike
elvis_mbadike@yahoo.co.uk
2
Department of Civil Engineering, Michael Okpara University of Agriculture, Umudike, P. M. B. 7267, Umuahia 440109, Abia State, Nigeria
AUTHOR
[1] Okere CE, Onwuka DO, Onwuka SU, Arimanwa JI. Simplex-based concrete mix design. IOSR J Mech Civ Eng 2013;5:46–55.
1
[2] Awwad E, Mabsout M, Hamad B, Khatib H. Preliminary studies on the use of natural fibers in sustainable concrete. Leban Sci J 2011;12:109–17.
2
[3] Yalley PP, Kwan ASK. Use of coconut fibre as an enhancement of concrete. J Eng Technol 2009;3:54–73.
3
[4] Vajje S, Krishna NR. Study on addition of the natural fibers into concrete. Int J Sci Technol Res 2013;2:213–8.
4
[5] Islam SM, Hussain RR, Morshed MAZ. Fiber-reinforced concrete incorporating locally available natural fibers in normal- and high-strength concrete and a performance analysis with steel fiber-reinforced composite concrete. J Compos Mater 2012;46:111–22. doi:10.1177/0021998311410492.
5
[6] Orie OU, Osadebe NN. Optimization of the compressive strength of five-component-concrete mix using Scheffe’s theory–a case study of mound soil concrete. J Niger Assoc Math Phys 2009;14:81–92.
6
[7] Onuamah PN. Optimized compressive strength modeling of mixed aggregate in solid sandcrete production. Int J Comput Eng Res 2015;5:39–52.
7
[8] Scheffé H. Experiments with Mixtures. J R Stat Soc Ser B 1958;20:344–60. doi:10.1111/j.2517-6161.1958.tb00299.x.
8
[9] Ezeh JC, Ibearuegbulem OM, Anyaogu L. Optimization of Compressive Strength of Cement-Sawdust Ash Sandcrete Block Using Scheffe’s Mathematical Model. Int J Eng 2010;4:487–94.
9
[10] Onyelowe K, Alaneme G, Igboayaka C, Orji F, Ugwuanyi H, Bui Van D, et al. Scheffe optimization of swelling, California bearing ratio, compressive strength, and durability potentials of quarry dust stabilized soft clay soil. Mater Sci Energy Technol 2019;2:67–77. doi:10.1016/j.mset.2018.10.005.
10
[11] Okere CE, Osadebe NN, Onwuka DO. Prediction of flexural strength of soilcrete blocks using Scheffe’s simplex lattice design. Int J Comput Sci Eng 2014;2:52–60.
11
[12] Alaneme George U, Mbadike Elvis M. Optimization of flexural strength of palm nut fibre concrete using Scheffe’s theory. Mater Sci Energy Technol 2019;2:272–87. doi:10.1016/j.mset.2019.01.006.
12
[13] Chiemela C, Okoye PC, Nwosu PC, Oke OM, Ohakwe CN. Optimization of concrete made with abakaliki quarry dust as fine aggregate using Scheffe’s optimization Model. Int Lett Nat Sci 2014;15.
13
[14] Rai A, Joshi YP. Applications and properties of fibre reinforced concrete. J Eng Res Appl 2014;4:123–31.
14
[15] Myers RH, Montgomery DC, Anderson-Cook CM. Response surface methodology: process and product optimization using designed experiments. John Wiley & Sons; 2016.
15
[16] Okafor FO, Oguaghamba OA. Procedure for optimization using Scheffe’s models. J Eng Sci Appl 2009;7:36–47.
16
[17] Akhnazorova S, Katarao V. Design of Experiments – Part II. Exp Optim Chem Chem Eng Moscow, Mir Publ 1982:150– 309.
17
[18] Standard B. Specification for aggregates from natural sources for concrete. London BSI 1992:1–9.
18
[19] British Standards Institution, BS EN 1008:2000. Mixing water for concrete – Specification for sampling, testing and assessing the suitability of water, including water recovered from processes in the concrete industry, as mixing water for concrete. n.d.
19
ORIGINAL_ARTICLE
The Effect of Zeolite on Different Mechanical Properties and Permeability of Self-Compacting Concrete
Today 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.
https://www.jcepm.com/article_105865_5e3056cf7607bb34b4fa672737ccd14f.pdf
2020-01-01
53
68
10.22115/cepm.2020.214817.1079
Pozzolan
cement
Mechanical properties
Permeabili
Water absorption rate
Farhad
Pirmohammadi Alishah
petrofarhad@iaushab.ac.ir
1
Assistant Professor of Civil Engineering Department, Shabestar Branch, Islamic Azad University, Shabestar, Iran
LEAD_AUTHOR
[1] Rangaraju PR, Olek J, Diamond S. An investigation into the influence of inter-aggregate spacing and the extent of the ITZ on properties of Portland cement concretes. Cem Concr Res 2010;40:1601–8. doi:10.1016/j.cemconres.2010.07.002.
1
[2] Moura WA, Gonçalves JP, Lima MBL. Copper slag waste as a supplementary cementing material to concrete. J Mater Sci 2007;42:2226–30. doi:10.1007/s10853-006-0997-4.
2
[3] Wang XH, Jacobsen S, Lee SF, He JY, Zhang ZL. Effect of silica fume, steel fiber and ITZ on the strength and fracture behavior of mortar. Mater Struct 2010;43:125.
3
[4] Wu Z, Shi C, Khayat KH. Influence of silica fume content on microstructure development and bond to steel fiber in ultra-high strength cement-based materials (UHSC). Cem Concr Compos 2016;71:97–109. doi:10.1016/j.cemconcomp.2016.05.005.
4
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