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Nordic Concrete Research最新文献

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Prediction Models for Thermal Conductivity of Cement-based Composites 水泥基复合材料导热系数预测模型
IF 1
Nordic Concrete Research Pub Date : 2018-06-01 DOI: 10.2478/ncr-2018-0010
M. Baghban, M. Kioumarsi, S. Grammatikos
{"title":"Prediction Models for Thermal Conductivity of Cement-based Composites","authors":"M. Baghban, M. Kioumarsi, S. Grammatikos","doi":"10.2478/ncr-2018-0010","DOIUrl":"https://doi.org/10.2478/ncr-2018-0010","url":null,"abstract":"Abstract Cement-based materials are the most consumed materials in the construction industry. Low or high thermal conductive cement-based materials are of interest in applications such as embedded floor heating systems, building envelopes or structural elements. This paper describes prediction models for thermal conductivity of cementitious composites by considering different variables such as constituent materials, porosity and moisture content. The presented prediction models may be used for thermal conductivity based mix design of cementitious materials. Based on the desired accuracy, different solutions are proposed.","PeriodicalId":42762,"journal":{"name":"Nordic Concrete Research","volume":"98 1","pages":"163 - 171"},"PeriodicalIF":1.0,"publicationDate":"2018-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"80686430","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: 6
Dynamic Measurements for Determining Poisson’s Ratio of Young Concrete 测定年轻混凝土泊松比的动态测量方法
IF 1
Nordic Concrete Research Pub Date : 2018-06-01 DOI: 10.2478/ncr-2018-0006
Lamis Ahmed
{"title":"Dynamic Measurements for Determining Poisson’s Ratio of Young Concrete","authors":"Lamis Ahmed","doi":"10.2478/ncr-2018-0006","DOIUrl":"https://doi.org/10.2478/ncr-2018-0006","url":null,"abstract":"Abstract Knowledge of the elastic properties of concrete at early age is often a pre-requisite for numerical calculations. This paper discusses the use of a laboratory technique for determining Poisson’s ratio at early concrete age. A non-destructive test set-up using the impact resonance method has been tested and evaluated. With the method, it has been possible to obtain results already at 7 hours of concrete age. Poisson’s ratio is found to decrease sharply during the first 24 hours to reach a value of 0.08 and then increase to approximately 0.15 after seven days.","PeriodicalId":42762,"journal":{"name":"Nordic Concrete Research","volume":"53 1","pages":"106 - 95"},"PeriodicalIF":1.0,"publicationDate":"2018-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"81015506","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: 12
The Influence of Supplementary Cementitious Materials on Climate Impact of Concrete Structures Exposed to Chlorides 补充胶凝材料对暴露于氯化物的混凝土结构气候影响的影响
IF 1
Nordic Concrete Research Pub Date : 2018-06-01 DOI: 10.2478/ncr-2018-0005
Nadia Al-Ayish, O. During, K. Malaga, N. Silva, K. Gudmundsson
{"title":"The Influence of Supplementary Cementitious Materials on Climate Impact of Concrete Structures Exposed to Chlorides","authors":"Nadia Al-Ayish, O. During, K. Malaga, N. Silva, K. Gudmundsson","doi":"10.2478/ncr-2018-0005","DOIUrl":"https://doi.org/10.2478/ncr-2018-0005","url":null,"abstract":"Abstract Addition of fly ash or GGBS in concrete has shown to increase the durability and thus the service life of concrete structures exposed to chlorides. Currently, the durability relies on regulations, which beside a minimum cover thickness also put constraint on amount and type of SCM in different environments. Swedish regulations do not, however, consider the actual durability of different binders. As a consequence, a LCA might be misleading. This paper investigates the climate impact of concrete with SCM in chloride environment. Current prescriptive design approach is compared with a performance based service life approach and applied to bridge parts.","PeriodicalId":42762,"journal":{"name":"Nordic Concrete Research","volume":"1 1","pages":"77 - 93"},"PeriodicalIF":1.0,"publicationDate":"2018-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"79830943","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: 3
Continuous Preventive Bridge Maintenance of Swedish Municipalities – A Survey on Common Practice 瑞典市政当局桥梁的持续预防性养护——对一般做法的调查
IF 1
Nordic Concrete Research Pub Date : 2018-06-01 DOI: 10.2478/ncr-2018-0008
Louise Andersson, J. Silfwerbrand, Anders Selander, J. Trägårdh
{"title":"Continuous Preventive Bridge Maintenance of Swedish Municipalities – A Survey on Common Practice","authors":"Louise Andersson, J. Silfwerbrand, Anders Selander, J. Trägårdh","doi":"10.2478/ncr-2018-0008","DOIUrl":"https://doi.org/10.2478/ncr-2018-0008","url":null,"abstract":"Abstract As part of a report [1] on continuous preventive bridge maintenance, a survey was conducted with Swedish municipalities. The survey’s focus was on bridges and preventive maintenance, as well as the demands and performance control stated by the municipalities. The preventive maintenance the survey focused on was the annual maintenance concerning washing, cleaning of drainage system and removal of vegetation. The survey showed both similarities and differences within the municipalities but also in comparison with Swedish Transport Agency (STA).","PeriodicalId":42762,"journal":{"name":"Nordic Concrete Research","volume":"7 1","pages":"127 - 142"},"PeriodicalIF":1.0,"publicationDate":"2018-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"79462589","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: 4
Abrasion of concrete by ice in arctic sea structures 北冰洋结构中冰对混凝土的磨损
IF 1
Nordic Concrete Research Pub Date : 1990-05-01 DOI: 10.14359/2224
S. Huovinen
{"title":"Abrasion of concrete by ice in arctic sea structures","authors":"S. Huovinen","doi":"10.14359/2224","DOIUrl":"https://doi.org/10.14359/2224","url":null,"abstract":"The concrete structure is subjected to a heavy mechanical load near the water level, due to the moving ice sheet as it breaks against the structure. Furthermore, recurrent freeze-thaw cycles deteriorate the concrete, if it has not been designed to resist recurrent freezing in marine conditions. The abrasion of concrete in arctic sea structures can be estimated by means of the laboratory abrasion test development in connection with the research and other laboratory tests","PeriodicalId":42762,"journal":{"name":"Nordic Concrete Research","volume":"19 1","pages":"103-115"},"PeriodicalIF":1.0,"publicationDate":"1990-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"72959698","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: 27
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