Pub Date : 2014-12-01DOI: 10.12900/RBM14.20.6-0034
F. Wittmann
{"title":"Personal Note of the Editor-in-chief","authors":"F. Wittmann","doi":"10.12900/RBM14.20.6-0034","DOIUrl":"https://doi.org/10.12900/RBM14.20.6-0034","url":null,"abstract":"","PeriodicalId":20957,"journal":{"name":"Restoration of Buildings and Monuments","volume":"1 1","pages":"377 - 378"},"PeriodicalIF":0.0,"publicationDate":"2014-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"87420031","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}
Pub Date : 2014-12-01DOI: 10.12900/rbm14.20.6-0043
O. During, K. Malaga
Abstract The aim of this study is to perform a life cycle cost analysis (LCC), where the economic cost of extending service life by the impregnation of bridge edge beams is compared to the reparation of an edge beam. Previous economic analyses on bridge edge beams had shown that there was no clear economic benefit in impregnating the edge beams. However, results from this study pointed out that in most cases there is a clear economic benefit to impregnate the bridge edge beams even if it has to be repeated every 15 years.
{"title":"Life Cycle Cost Analysis on Impregnated Bridge Edge Beams","authors":"O. During, K. Malaga","doi":"10.12900/rbm14.20.6-0043","DOIUrl":"https://doi.org/10.12900/rbm14.20.6-0043","url":null,"abstract":"Abstract The aim of this study is to perform a life cycle cost analysis (LCC), where the economic cost of extending service life by the impregnation of bridge edge beams is compared to the reparation of an edge beam. Previous economic analyses on bridge edge beams had shown that there was no clear economic benefit in impregnating the edge beams. However, results from this study pointed out that in most cases there is a clear economic benefit to impregnate the bridge edge beams even if it has to be repeated every 15 years.","PeriodicalId":20957,"journal":{"name":"Restoration of Buildings and Monuments","volume":"122 1","pages":"441 - 446"},"PeriodicalIF":0.0,"publicationDate":"2014-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"73387311","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}
Pub Date : 2014-11-01DOI: 10.12900/rbm14.20.5-0032
M. Kosalla, M. Raupach
In separation cracks in RC elements (e. g. park decks), a short-term chloride exposure can already cause reinforcement corrosion. It is questionable, if a deep injection of the crack as an exclusive procedure is sufficient for effectively stopping the corrosion process. For investigating the corrosion activity during the chloride exposition and after the crack maintenance, cracked beams with crack-crossing reinforcement were fabricated. The cracks have been grout injected with PUR after a winter season of six month with a periodic chloride exposure. The anodic (element) current was recorded both before and after the injection. During chloride exposure the measured current flows were very high (sometimes > 200 μA). After the injection they slowly decreased and dropped nearly to zero in the next winter period. In the next summer the current flows increased just marginally, which seems to be mostly uncritical.
{"title":"Korrosion in Trennrissen nach Rissinjektion mit Polyurethan / Reinforcement Corrosion in Separation Cracks after Injection with PUR","authors":"M. Kosalla, M. Raupach","doi":"10.12900/rbm14.20.5-0032","DOIUrl":"https://doi.org/10.12900/rbm14.20.5-0032","url":null,"abstract":"In separation cracks in RC elements (e. g. park decks), a short-term chloride exposure can already cause reinforcement corrosion. It is questionable, if a deep injection of the crack as an exclusive procedure is sufficient for effectively stopping the corrosion process. For investigating the corrosion activity during the chloride exposition and after the crack maintenance, cracked beams with crack-crossing reinforcement were fabricated. The cracks have been grout injected with PUR after a winter season of six month with a periodic chloride exposure. The anodic (element) current was recorded both before and after the injection. During chloride exposure the measured current flows were very high (sometimes > 200 μA). After the injection they slowly decreased and dropped nearly to zero in the next winter period. In the next summer the current flows increased just marginally, which seems to be mostly uncritical.","PeriodicalId":20957,"journal":{"name":"Restoration of Buildings and Monuments","volume":"107 1","pages":"51 - 64"},"PeriodicalIF":0.0,"publicationDate":"2014-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"89004700","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}
Pub Date : 2014-11-01DOI: 10.12900/rbm14.20.5-0028
U. Antons, Michael Raupach, Oliver Weichold
The NMR MOUSE®, a device using single-sided nuclear magnetic resonance, allows the non-destructive determination of static and dynamic near-surface (currently up to 25 mm depth) hydrogen-containing phases in objects of any size. The present article briefly describes the measuring principle and then highlights applications of single-sided NMR in building materials research using examples from current and former ibac projects. These are mainly the quantitative, depth-dependent measurement of the water content, monitoring the transport of water, hydrophobing agents, and reactive systems in concrete along with determining the layer thickness and ageing processes in polymer films. In addition, the article describes how the presence of steel reinforcements influences the measured values and presents initial results obtained at a real-life building.
{"title":"Einsatzmöglichkeiten der NMR-MOUSE® in der Bauforschung – aktueller Stand der Arbeiten am ibac / Potential Applications of the NMR MOUSE® in Building Research – Current State of the Art at the Institute of Building Materials Research Aachen","authors":"U. Antons, Michael Raupach, Oliver Weichold","doi":"10.12900/rbm14.20.5-0028","DOIUrl":"https://doi.org/10.12900/rbm14.20.5-0028","url":null,"abstract":"The NMR MOUSE®, a device using single-sided nuclear magnetic resonance, allows the non-destructive determination of static and dynamic near-surface (currently up to 25 mm depth) hydrogen-containing phases in objects of any size. The present article briefly describes the measuring principle and then highlights applications of single-sided NMR in building materials research using examples from current and former ibac projects. These are mainly the quantitative, depth-dependent measurement of the water content, monitoring the transport of water, hydrophobing agents, and reactive systems in concrete along with determining the layer thickness and ageing processes in polymer films. In addition, the article describes how the presence of steel reinforcements influences the measured values and presents initial results obtained at a real-life building.","PeriodicalId":20957,"journal":{"name":"Restoration of Buildings and Monuments","volume":"12 1 1","pages":"14 - 3"},"PeriodicalIF":0.0,"publicationDate":"2014-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"88664090","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}
{"title":"Dauerhaftigkeit von Parkhäusern und Tiefgaragen – Aktueller Stand der Regelwerke / Durability of Parking Garages and Basement Garages – Status Quo of Rules and Standards","authors":"L. Meyer, U. Wiens","doi":"10.1515/rbm14.20.5-0031","DOIUrl":"https://doi.org/10.1515/rbm14.20.5-0031","url":null,"abstract":"","PeriodicalId":20957,"journal":{"name":"Restoration of Buildings and Monuments","volume":"47 1","pages":"41 - 50"},"PeriodicalIF":0.0,"publicationDate":"2014-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"84866429","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}
Pub Date : 2014-11-01DOI: 10.12900/rbm14.20.5-0033
A. Dimmig-Osburg
The use in building construction is a relatively new application of polymer concrete. In a research project a building block system and the fabrication technology for the reversible construction of buildings with regionally available aggregates were developed. In this paper the aspects of the successful material development are described, especially with regard to the characterization of both the binders and the polymer concretes, considering strength and durability.
{"title":"Polymerbeton aus Wüstensand – ein Projekt der angewandten Forschung / Polymer Concrete produced with Desert Sand – a Project of Applied Research","authors":"A. Dimmig-Osburg","doi":"10.12900/rbm14.20.5-0033","DOIUrl":"https://doi.org/10.12900/rbm14.20.5-0033","url":null,"abstract":"The use in building construction is a relatively new application of polymer concrete. In a research project a building block system and the fabrication technology for the reversible construction of buildings with regionally available aggregates were developed. In this paper the aspects of the successful material development are described, especially with regard to the characterization of both the binders and the polymer concretes, considering strength and durability.","PeriodicalId":20957,"journal":{"name":"Restoration of Buildings and Monuments","volume":"18 1","pages":"65 - 74"},"PeriodicalIF":0.0,"publicationDate":"2014-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"81856694","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}
{"title":"Korrosion in Trennrissen nach Rissinjektion mit Polyurethan / Reinforcement Corrosion in Separation Cracks after Injection with PUR","authors":"M. Kosalla, M. Raupach","doi":"10.1201/B18972-95","DOIUrl":"https://doi.org/10.1201/B18972-95","url":null,"abstract":"","PeriodicalId":20957,"journal":{"name":"Restoration of Buildings and Monuments","volume":"14 1","pages":"51 - 64"},"PeriodicalIF":0.0,"publicationDate":"2014-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"87297456","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}
{"title":"Untersuchungen zur kontrollierten Rissverteilung textilbewehrter Schutzschichten mit optischer 3D-Verformungsanalyse / Studies for a Controlled Crack Distribution on Textile Reinforced Protective Layers with an Optical 3D Deformation Analysis System","authors":"C. M. Cruz, M. Raupach","doi":"10.1515/rbm14.20.5-0030","DOIUrl":"https://doi.org/10.1515/rbm14.20.5-0030","url":null,"abstract":"","PeriodicalId":20957,"journal":{"name":"Restoration of Buildings and Monuments","volume":"14 1","pages":"29 - 40"},"PeriodicalIF":0.0,"publicationDate":"2014-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"91284057","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}
Pub Date : 2014-11-01DOI: 10.12900/rbm14.20.5-0029
R. S. Holthausen, H. Stahl, M. Raupach
Biogenic sulphuric acid, as it is formed e. g. at the ceiling of sewage pipes, can severely damage unprotected concrete structures and limit the service life. Today, no durable and at the same time affordable system exists that allows protecting the concrete under such aggressive conditions. To compensate this, a new, dry-sprayed polymer concrete for the rehabilitation of damaged sewage systems was developed by a combined effort of the Institute of Building Materials Research and Massenberg GmbH. In this paper, we describe the parameters relevant for the dry-spraying of polymer concrete as well as the technical properties of the concrete. The results show the excellent properties and the potential of the sprayed polymer concrete for the rehabilitation of sewage systems.
{"title":"Spritzbarer, säurebeständiger Epoxidharzmörtel für die Instandsetzung von abwassertechnischen Anlagen / Dry-Sprayed Polymer Concrete with High Acid Resistance for the Rehabilitation of Sewage Systems","authors":"R. S. Holthausen, H. Stahl, M. Raupach","doi":"10.12900/rbm14.20.5-0029","DOIUrl":"https://doi.org/10.12900/rbm14.20.5-0029","url":null,"abstract":"Biogenic sulphuric acid, as it is formed e. g. at the ceiling of sewage pipes, can severely damage unprotected concrete structures and limit the service life. Today, no durable and at the same time affordable system exists that allows protecting the concrete under such aggressive conditions. To compensate this, a new, dry-sprayed polymer concrete for the rehabilitation of damaged sewage systems was developed by a combined effort of the Institute of Building Materials Research and Massenberg GmbH. In this paper, we describe the parameters relevant for the dry-spraying of polymer concrete as well as the technical properties of the concrete. The results show the excellent properties and the potential of the sprayed polymer concrete for the rehabilitation of sewage systems.","PeriodicalId":20957,"journal":{"name":"Restoration of Buildings and Monuments","volume":"12 1","pages":"15 - 28"},"PeriodicalIF":0.0,"publicationDate":"2014-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"84114956","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}
Pub Date : 2014-11-01DOI: 10.12900/rbm14.20.5-0031
L. Meyer, U. Wiens
Experiences made during construction of parking garages raised repeatedly controversial discussions among the engineers concerned, despite the rules and explanations given in the DBV Information Sheet and in DIN 1045-1 together with the comments published in DAfStb Reports No. 525 and No. 526. Recommendations and interpretations shall be consistent and unambiguous, however, and they shall represent the generally accepted state-of-the-art of science and technology. In order to locate the actual situation and learn the opinion of experts, DAfStb has organized two specific colloquia. As a result of these two meetings DAfStb has recommended that the content of DAfStb Report No. 600 and the modifications published in the DBV Information Sheet shall be discussed in the appropriate standards committees and results shall be integrated in the national appendix of DIN EN 1992-1-1. Based on the results of the two colloquia, DAfStb has accepted the task to do the necessary preparatory work. In this contribution the actual state of the consultations within DAfStb shall be outlined.
尽管DBV信息表和DIN 1045-1中给出了规则和解释，以及DAfStb第525号和第526号报告中发表的评论，但在停车场建设过程中取得的经验在有关工程师中引起了反复的争议性讨论。但是，建议和解释应是一致和明确的，并应代表普遍接受的科学和技术的最新水平。为了定位实际情况，了解专家的意见，DAfStb组织了两次专门的座谈会。由于这两次会议的结果，DAfStb建议，DAfStb第600号报告的内容和在DBV信息表中公布的修改应在适当的标准委员会中讨论，结果应纳入DIN EN 1992-1-1的国家附录。根据两次座谈会的结果，科技部已接受任务，做好必要的准备工作。在本报告中，将概述在该部内部进行协商的实际情况。
{"title":"Dauerhaftigkeit von Parkhäusern und Tiefgaragen – Aktueller Stand der Regelwerke / Durability of Parking Garages and Basement Garages – Status Quo of Rules and Standards","authors":"L. Meyer, U. Wiens","doi":"10.12900/rbm14.20.5-0031","DOIUrl":"https://doi.org/10.12900/rbm14.20.5-0031","url":null,"abstract":"Experiences made during construction of parking garages raised repeatedly controversial discussions among the engineers concerned, despite the rules and explanations given in the DBV Information Sheet and in DIN 1045-1 together with the comments published in DAfStb Reports No. 525 and No. 526. Recommendations and interpretations shall be consistent and unambiguous, however, and they shall represent the generally accepted state-of-the-art of science and technology. In order to locate the actual situation and learn the opinion of experts, DAfStb has organized two specific colloquia. As a result of these two meetings DAfStb has recommended that the content of DAfStb Report No. 600 and the modifications published in the DBV Information Sheet shall be discussed in the appropriate standards committees and results shall be integrated in the national appendix of DIN EN 1992-1-1. Based on the results of the two colloquia, DAfStb has accepted the task to do the necessary preparatory work. In this contribution the actual state of the consultations within DAfStb shall be outlined.","PeriodicalId":20957,"journal":{"name":"Restoration of Buildings and Monuments","volume":"11 1","pages":"41 - 50"},"PeriodicalIF":0.0,"publicationDate":"2014-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"89445142","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}
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