Failure Analysis of a Partially Collapsed Building using Analytical Hierarchical Process

Alaneme, George Uwadiegwu; Ezeokpube, Gregory C.; Mbadike, Elvis Michael

doi:10.1007/s11668-020-01040-3

Cited by 15 publications

(7 citation statements)

References 10 publications

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“…e optimization solution derived from the analytical proceedings of the mixture experiment designs is presented in Table 24. From the derived results, an optimal desirability score of 0.99 was obtained at a combination ratio of 0.89 : 0.110 to produce maximized compressive and flexural strength of 31.102 N/mm 2 and 9.384 N/mm 2 , respectively [75].…”

Section: Statistical Difference In Fits (Dffits) Vs Runsmentioning

confidence: 99%

Optimization and Simulation of Saw Dust Ash Concrete Using Extreme Vertex Design Method

Iro

Alaneme

Milad

et al. 2022

Advances in Materials Science and Engineering

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In this research study, a constrained simplex optimization method was adapted for the evaluation of green concrete’s mechanical property constituting of two-component mixture problem of cement and saw dust ash (SDA), which is a derivative from industrial residue. This experiential research will provide avenue for the recycle and incorporation of waste materials to achieve sustainability and control indiscriminate disposal of waste. The formulated components constrained were realized from the relevant literature studies to obtain the feasible planes in the simplex, and from this computation approach using I-optimality, the design mixture proportions and experimental runs were derived. The experimental results obtained from the laboratory experiments showed a maximum compressive strength of 31.13 N/mm2 with a ratio of 0.875 : 0.125 for cement and SDA, respectively, and a flexural strength of 9.49 N/mm2 with a ratio of 1 : 0 for cement and SDA, respectively; the results were observed to decline linearly with the further addition of SDA. The details generated from laboratory program were utilized for the development of the EVD model through fits statistical evaluation, ANOVA, diagnostic test and influence statistics, numerical optimization, and graphical statistical computations to analyze the datasets and locate the optimal levels of mixture ingredients using desirability function. A desirability score of 0.990 was derived at a mix ratio of 0.89 : 0.110 for the two components, cement and SDA, to produce a maximized compressive strength and a flexural strength of 31.102 N/mm2 and 9.384 N/mm2, respectively. Furthermore, the test of adequacy of the generated EVD model was carried out through simulation and statistical validation exercises using the F-test and student’s t-test, and the outcome signified a good correlation between the EVD model-simulated and actual values with p value >0.05.

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Section: Statistical Difference In Fits (Dffits) Vs Runsmentioning

confidence: 99%

Optimization and Simulation of Saw Dust Ash Concrete Using Extreme Vertex Design Method

Iro

Alaneme

Milad

et al. 2022

Advances in Materials Science and Engineering

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“…AHP is a decision-making method developed by Thomas Saaty in 1970, which is used for evaluations by creating an alternative ranking to sort the best selection base on a set of criteria [98,99]. As the factors and criteria of the U-cities vulnerability contain a large volume of assessments and are often related to each other's, the AHP allows the translation of the quantitative and qualitative assessments into a multi-criterion ranking by the decision-makers [100].…”

Section: Analytical Hierarchical Process (Ahp)mentioning

confidence: 99%

Vulnerability Assessment of Ubiquitous Cities Using the Analytic Hierarchy Process

2020

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Urbanization is a challenge faced by most countries worldwide and leads to several problems. Due to rapid communication capabilities, conforming the megacities into Ubiquitous cities (U-cities) seems to be a potential solution to mitigate the problems caused by urbanization. Extensive reliance and dependencies of U-cities on information and communication technologies (ICTs) bring forth a new set of risks and vulnerabilities to these megacities. This research investigates the vulnerabilities of ICTs against man-made and natural hazards in a systematic way using the Analytic Hierarchy Process. The study identifies the vulnerabilities of different ICTs in U-cities and helps in improving the system’s resistivity against various hazards. The task is performed by evaluating the level of disruption on the different technologies and areas under the identified man-made and natural hazards. The research provides an insight into the working mechanisms of involved ICTs. It also helps to manage U-cities with more secure and sustainable services. The research identified that the new ICTs-based hazards have emerged and have become among the most influential hazards. The research has concluded that the vulnerabilities of U-cities are significantly different from that of conventional cities and need further studies to develop further understandings. The research recommends similar vulnerability studies for regional areas as well.

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“…After curing for at least 28 days, the concrete strength, which is described as compressive strength, is gained over the course of days [22]. The compressive strength behavior of concrete is the most essential feature in quality control, and it is used to figure up the mechanical strength of construction materials to resist compression load [23].…”

Section: Introductionmentioning

confidence: 99%

Experimental investigation of crude oil contaminated soil for sustainable concrete production

Ezeokpube

Alaneme

Attah

et al. 2022

Archit. Struct. Constr.

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Contaminated soil materials are often unsuitable for engineering construction works due to high content of impurities which inhibits development of mechanical strength and durability properties. This study was therefore necessary to make available empirical evidence revealing the consequences of crude petroleum pollution on the mechanical characteristics of materials made of concrete and determine its effect on civil engineering works. The study involved collection of contaminated soil sample from the Kolomani oil-well in Bauchi State, Nigeria and laboratory evaluation performed to evaluate the engineering possessions of concrete formed from contaminated soil sample. A calculated ingredient at a proportion of water to cement (W/C) set at 0.5, a mix proportion of 1:1.8:2.7 was used with the fine aggregate content replaced partially with crude oil contaminated soil materials (COCM) from 0-40%. The obtained laboratory results showed rise in compressive strength property as COCM fraction increases with the optimal response of 16.36 N/mm 2 derived at 20% replacement. The experimental results was further subjected to statistical analysis using one-way ANOVA and F-statistics to test the source of variation for the geotechnical properties. Multiple Linear Regression (MLR) and correlation statistics were then used to establish relationship between mix ratios and the geotechnical properties. The results signifies good performance with R-squared of 82.81. The benefits derived from this work would enhance production of sustainable concrete works which can be applicable in large scale for tile production.

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Failure Analysis of a Partially Collapsed Building using Analytical Hierarchical Process

Cited by 15 publications

References 10 publications

Optimization and Simulation of Saw Dust Ash Concrete Using Extreme Vertex Design Method

Optimization and Simulation of Saw Dust Ash Concrete Using Extreme Vertex Design Method

Vulnerability Assessment of Ubiquitous Cities Using the Analytic Hierarchy Process

Experimental investigation of crude oil contaminated soil for sustainable concrete production

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