4 publications
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Probabilistic Sensitivity Analysis of Cover Quantity and Quality of Reinforced Concrete StructuresBy Md. Shafiqul Islam
Abstract: Design procedures based on current specifications do not always ensure required service life, mostly due to the environmental effect, error at the time of construction and underestimated cover properties at the time of design. Moreover, single-point value of any property does not provide rational support to the decision maker. Statistical resampling technique for each of the cover properties used to find out the service life of the structures is thus …
Published in Journal of Construction Engineering, Technology & Management · Vol. 2, Issue 1-3, 2012 · pp. 48–53 Read article →
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Method of Analysis for Chloride Distribution in Concrete from Torrent DataBy Md. Shafiqul Islam, Toshiharu Kishi
Abstract: Design w/c ratio becomes less important than achieved cover performance in the case of existing structure. Therefore, inspection data of chloride profile from some real structures do not always obey the rule of Fick’s law, suggesting the influence of a new parameter. In this study, chloride ion profiles and behavior of penetrating water for normal, fly ash and slag concrete with w/c ratio as 40, 55, and 70%, respectively, cast …
Published in Journal of Construction Engineering, Technology & Management · Vol. 4, Issue 3, 2014 · pp. 10–19 Read article →
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Durability Design of Reinforced Concrete Beams Using Cost Minimization by Excel SolverBy Md. Shafiqul Islam
Abstract: Design procedures based on current specifications do not always ensure required service life, mostly because of the underestimated durability parameters. This is due to the fact that definition of durability is not operational as basis for design, maintenance and repair. This paper presents an Excel spreadsheet model for the cost optimization of simply supported beams designed according to the requirements of the American Concrete Institute (ACI) code and the Japan …
Published in Journal of Construction Engineering, Technology & Management · Vol. 5, Issue 3, 2015 · pp. 75–81 Read article →
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Estimation of Life Cycle Cost of RC Infrastructure Using Different Analysis MethodsBy Md. Shafiqul Islam, Toshiharu Kishi
Abstract: Accuracy of service life prediction largely influence life cycle cost of infrastructure. Recent research come up with the conclusion that ingression of chloride to cover concrete is dependent on the water penetration front which dramatically change the service life. Therefore, in this study chloride ion profiles and behavior of penetrating water for slag concrete with w/c ratio as 40%, 55% and 70%, respectively, cast in laboratory, were examined. Furthermore, life …
Published in Journal of Construction Engineering, Technology & Management · Vol. 5, Issue 2, 2015 · pp. 15–21 Read article →