Proceedings of the Institution of Civil Engineers-Forensic Engineering最新文献_第2页

A study on cob sample production and techniques 棒材样品制作及工艺研究

IF 0.8

Proceedings of the Institution of Civil Engineers-Forensic Engineering Pub Date : 2022-11-17 DOI: 10.1680/jfoen.22.00022

Sangketa Sangma, D. Tripura, Arpan Deshmukh, Ayub Shaikh

{"title":"A study on cob sample production and techniques","authors":"Sangketa Sangma, D. Tripura, Arpan Deshmukh, Ayub Shaikh","doi":"10.1680/jfoen.22.00022","DOIUrl":"https://doi.org/10.1680/jfoen.22.00022","url":null,"abstract":"This paper deals with the validation of cob sample production technique that replicates the on-site wall construction method. Cob cubes were prepared under confined and unconfined conditions with varying drop heights (0.50 m, 0.75 m and 1.0 m) and moulding water content (25.7% to 39.7%) by mass of soil. Prior to mass production of samples, a trial test was performed at a constant drop height of 0.75 m and varying water content. Based on the trial test results, other two drop heights of 0.50 m and 1.0 m were adopted for further validation. The effect of confinement, drop heights and moulding water content on compressive strength and density of cubes were studied. Test result shows maximum compressive strength and density ranging from 1.22 MPa to 1.31 MPa and 1.65 g/cc to 1.70 g/cc respectively at 33.7% water content and 0.75 m drop height with confined specimen being the highest. The strength and density values obtained satisfy the guidelines prescribed by some of the standards. Thus, the proposed technique for cob production may be adopted to achieve the desirable compressive strength and density for the particular soil used in the present study.","PeriodicalId":42902,"journal":{"name":"Proceedings of the Institution of Civil Engineers-Forensic Engineering","volume":null,"pages":null},"PeriodicalIF":0.8,"publicationDate":"2022-11-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"89224283","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Sustainable ferrocement mortar with different waste materials and curing methods 不同废料和养护方法的可持续水泥砂浆

IF 0.8

Proceedings of the Institution of Civil Engineers-Forensic Engineering Pub Date : 2022-11-07 DOI: 10.1680/jfoen.22.00014

Z. Abed, H. Jaber, Esra’a lutfi Ibrahim

引用次数: 0

Design reviewing: are experts better and does slowing down improve performance? 设计评审:专家更好吗?放慢速度能提高性能吗?

IF 0.8

Proceedings of the Institution of Civil Engineers-Forensic Engineering Pub Date : 2022-11-07 DOI: 10.1680/jfoen.22.00013

C. MacRobert

引用次数: 0

Active Fault investigation and slope stability evaluation for the Aso Bridge replacement 阿索大桥改扩建活动断层调查及边坡稳定性评价

IF 0.8

Proceedings of the Institution of Civil Engineers-Forensic Engineering Pub Date : 2022-10-10 DOI: 10.1680/jfoen.21.00003

Koji Yamashita, Shingo Tanaka, Takefumi Yamaguchi

引用次数: 0

Briefing: Compliance with the rules of court as an expert witness 简介:作为专家证人遵守法庭规则

IF 0.8

Proceedings of the Institution of Civil Engineers-Forensic Engineering Pub Date : 2022-08-31 DOI: 10.1680/jfoen.22.00016

Sarah Saunders

引用次数: 0

Investigation of mechanical and durability properties of sustainable high-strength concrete 可持续高强混凝土力学与耐久性研究

IF 0.8

Proceedings of the Institution of Civil Engineers-Forensic Engineering Pub Date : 2022-08-04 DOI: 10.1680/jfoen.22.00008

Mamoona Riaz, Z. Alam, T. Zafar, U. Javed, Hanzlah Akhlaq

{"title":"Investigation of mechanical and durability properties of sustainable high-strength concrete","authors":"Mamoona Riaz, Z. Alam, T. Zafar, U. Javed, Hanzlah Akhlaq","doi":"10.1680/jfoen.22.00008","DOIUrl":"https://doi.org/10.1680/jfoen.22.00008","url":null,"abstract":"The surge in production of cement due to rapid growth of construction industry has an adverse effect on environment globally caused by the huge amount of carbon emission. In order to produce an environment friendly concrete, this study investigates the effective contribution of silica fume (SF) on various mechanical and durability characteristics of high strength concrete. In this regard, the incorporation of silica fume was adopted with a progressive proportion of 0%, 5%, 10%, 15%, 20%, 25% and 30% by weight of cement constituting various concrete mixes namely CM, SF05, SF10, SF15, SF20, SF25 and SF30 respectively. The mechanical and durability properties of concrete improved along with the incorporation of SF up to its 15% replacement. However, excessive replacement of SF have adverse effect on its mechanical and durability properties due to dilution effect of cement. Similarly, in terms of the mechanical characteristics, the proposed 15% substitution of silica fume resulted in highest compressive and flexural strengths with respect to CM. The maximum reduction in strength loss with respect to control mix was 41.17% and 28.04% for sulfuric and hydrochloric acid due to formation of densified microstructure.","PeriodicalId":42902,"journal":{"name":"Proceedings of the Institution of Civil Engineers-Forensic Engineering","volume":null,"pages":null},"PeriodicalIF":0.8,"publicationDate":"2022-08-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"80815866","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

Operational analysis for controlling safety violations on construction sites 控制建筑工地安全违规行为的操作分析

IF 0.8

Proceedings of the Institution of Civil Engineers-Forensic Engineering Pub Date : 2022-08-04 DOI: 10.1680/jfoen.22.00015

Fidelis Emuze

引用次数: 0

Soil slope analysis to develop useful correlations in saturated and unsaturated conditions 土坡分析，以开发在饱和和非饱和条件下有用的相关性

IF 0.8

Proceedings of the Institution of Civil Engineers-Forensic Engineering Pub Date : 2022-08-04 DOI: 10.1680/jfoen.22.00002

Muhammad Israr Khan, Shuhong Wang, Pengyu Wang, Mohammad Ajmal Nikjow

引用次数: 0

Case analysis of sudden cracking in buildings near landfill pit 垃圾填埋场附近建筑物突然开裂的实例分析

IF 0.8

Proceedings of the Institution of Civil Engineers-Forensic Engineering Pub Date : 2022-08-04 DOI: 10.1680/jfoen.22.00010

Q. Zhang, Xiaoyong Xu, Qiang Zhao

引用次数: 0

Dynamic time-based vulnerability assessment in pursuit of critical infrastructure resilience 关键基础设施弹性的动态基于时间的脆弱性评估

IF 0.8

Proceedings of the Institution of Civil Engineers-Forensic Engineering Pub Date : 2022-06-10 DOI: 10.1680/jfoen.21.00033

M. A. Nekooie, Ghasem Taghizadeh

{"title":"Dynamic time-based vulnerability assessment in pursuit of critical infrastructure resilience","authors":"M. A. Nekooie, Ghasem Taghizadeh","doi":"10.1680/jfoen.21.00033","DOIUrl":"https://doi.org/10.1680/jfoen.21.00033","url":null,"abstract":"One of the main principles of critical infrastructure resilience (CIR) is risk assessment for severe shocks caused by natural or man-made disasters. Vulnerability assessment plays an important role in calculating risk. One type of vulnerability assessment is the sequential-function vulnerability assessment, which is based on the network characteristics and interdependencies of different assets. A further significant area of vulnerability among resilient infrastructures relates to time. Time can change interdependencies, it can modify the inherent properties of individual assets, and it can superpose impacts through pathways between receptors and sources during each shock. This study aims to develop a new technique for assessing dynamic time-based vulnerability as a main factor in risk analysis for achieving resilience. In this study, a new analytical equation is developed based on the effect of the source and the interdependencies between the receptors as nodes in the infrastructure network. Direct and indirect impacts on each infrastructure receptor are simulated by impulse functions and Heaviside functions superposed in the total function. The equation for time-based vulnerability assessment for interdependent assets in critical infrastructures is obtained by employing a Laplace transformation. Finally, the developed equation is tested on a hypothetical case study to assess vulnerability.","PeriodicalId":42902,"journal":{"name":"Proceedings of the Institution of Civil Engineers-Forensic Engineering","volume":null,"pages":null},"PeriodicalIF":0.8,"publicationDate":"2022-06-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"81639447","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0