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"SP-126: Durability of Concrete: Second International Conference, Montreal, Canada 1991"最新文献

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Erosion-Abrasion Resistance of Steel Fiber Reinforced Concrete 钢纤维混凝土的抗侵蚀磨损性能
"SP-126: Durability of Concrete: Second International Conference, Montreal, Canada 1991" Pub Date : 1991-08-01 DOI: 10.14359/2359
J. Šušteršič, E. Mali, Stanislav Urvancic
{"title":"Erosion-Abrasion Resistance of Steel Fiber Reinforced Concrete","authors":"J. Šušteršič, E. Mali, Stanislav Urvancic","doi":"10.14359/2359","DOIUrl":"https://doi.org/10.14359/2359","url":null,"abstract":"","PeriodicalId":274481,"journal":{"name":"\"SP-126: Durability of Concrete: Second International Conference, Montreal, Canada 1991\"","volume":"44 2 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1991-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123512779","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: 5
Durability of Carbon Fiber Reinforced Cements in Acidic Environments 碳纤维增强水泥在酸性环境中的耐久性研究
"SP-126: Durability of Concrete: Second International Conference, Montreal, Canada 1991" Pub Date : 1991-08-01 DOI: 10.14359/2408
N. Banthia, J. Sheng
{"title":"Durability of Carbon Fiber Reinforced Cements in Acidic Environments","authors":"N. Banthia, J. Sheng","doi":"10.14359/2408","DOIUrl":"https://doi.org/10.14359/2408","url":null,"abstract":"The strength and toughness durability of Carbon Fiber Reinforced Cements (CFRC) in inorganic acidic environments was investigated by subjecting prismatic flexural specimens (15 mm x 15 mm x 150 mm) to two acidic environments (H sub 2 SO sub 4 and HNO sub 3) at the age of 28 days for up to 90 days. The pH of the two acids was maintained at 4.0 Eight CFRC mixes and three volume fractions of pitch-based carbon fibers were investigated. It was concluded that while plain unreinforced cements had considerable retrogression in their mechanical properties, carbon fiber reinforced cements had no appreciable effect on either the strength or the toughness at least for the duration of exposure investigated.","PeriodicalId":274481,"journal":{"name":"\"SP-126: Durability of Concrete: Second International Conference, Montreal, Canada 1991\"","volume":"17 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1991-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123841842","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: 2
Effect of Metakaolin on Alkali-Silica Reaction (ASR) in Concrete Manufactured With Reactive Aggregate 偏高岭土对反应骨料混凝土碱-硅反应的影响
"SP-126: Durability of Concrete: Second International Conference, Montreal, Canada 1991" Pub Date : 1991-08-01 DOI: 10.14359/2454
G. Walters, T. Jones
{"title":"Effect of Metakaolin on Alkali-Silica Reaction (ASR) in Concrete Manufactured With Reactive Aggregate","authors":"G. Walters, T. Jones","doi":"10.14359/2454","DOIUrl":"https://doi.org/10.14359/2454","url":null,"abstract":"This study is on the effectiveness of metakaolin in preventing ASR (alkali-silica reaction). Samples of metakaolin were prepared by calcining china clay (relatively pure kaolin) and several ball clays, all collected from South West England. Compression cube strength tests were carried out in which part of the cement content of a 1:6 mixture of aggregate and ordinary Portland cement (OPC) was replaced by calcined clay. Results showed that some of the mixtures containing calcined clay exhibited no reduction in the 28 day compressive strength even when 25 percent of the OPC was replaced. Tests for ASR were conducted using prisms produced in accordance with the Draft British Standard 812, Part 123, containing highly reactive natural aggregates which gave an expansion of 0.450 percent at twelve months. It is concluded that expansion due to ASR is completely suppressed when sufficient metakaolin is added to thee concrete formulation. Metakaolin does not reduce the ultimate compressive strength of the concrete, provided that the feed clay is relatively free of impurity minerals.","PeriodicalId":274481,"journal":{"name":"\"SP-126: Durability of Concrete: Second International Conference, Montreal, Canada 1991\"","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1991-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129594625","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: 37
Effect of Changes in Matrix Properties With Time on the Measured and Predicted Long Term Properties of Fiber Reinforced Cement 基体性能随时间变化对纤维增强水泥长期性能测定和预测的影响
"SP-126: Durability of Concrete: Second International Conference, Montreal, Canada 1991" Pub Date : 1991-08-01 DOI: 10.14359/2378
D. Hannan
{"title":"Effect of Changes in Matrix Properties With Time on the Measured and Predicted Long Term Properties of Fiber Reinforced Cement","authors":"D. Hannan","doi":"10.14359/2378","DOIUrl":"https://doi.org/10.14359/2378","url":null,"abstract":"","PeriodicalId":274481,"journal":{"name":"\"SP-126: Durability of Concrete: Second International Conference, Montreal, Canada 1991\"","volume":"49 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1991-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125994526","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
Prestressed Bridges in Adverse Environments 不利环境下的预应力桥梁
"SP-126: Durability of Concrete: Second International Conference, Montreal, Canada 1991" Pub Date : 1991-08-01 DOI: 10.14359/3755
V. Nobokshchenov
{"title":"Prestressed Bridges in Adverse Environments","authors":"V. Nobokshchenov","doi":"10.14359/3755","DOIUrl":"https://doi.org/10.14359/3755","url":null,"abstract":"","PeriodicalId":274481,"journal":{"name":"\"SP-126: Durability of Concrete: Second International Conference, Montreal, Canada 1991\"","volume":"40 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1991-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128822793","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
Reinforced Concrete: Correlation Between Cracking and Corrosion 钢筋混凝土:开裂与腐蚀的关系
"SP-126: Durability of Concrete: Second International Conference, Montreal, Canada 1991" Pub Date : 1991-08-01 DOI: 10.14359/2529
R. François, G. Arliguie
{"title":"Reinforced Concrete: Correlation Between Cracking and Corrosion","authors":"R. François, G. Arliguie","doi":"10.14359/2529","DOIUrl":"https://doi.org/10.14359/2529","url":null,"abstract":"","PeriodicalId":274481,"journal":{"name":"\"SP-126: Durability of Concrete: Second International Conference, Montreal, Canada 1991\"","volume":"3 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1991-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"120951516","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: 28
Durability of Cements With Fillers 填料水泥的耐久性
"SP-126: Durability of Concrete: Second International Conference, Montreal, Canada 1991" Pub Date : 1991-08-01 DOI: 10.14359/2535
M. Ranc, G. Cochet, G. Chaudouard
{"title":"Durability of Cements With Fillers","authors":"M. Ranc, G. Cochet, G. Chaudouard","doi":"10.14359/2535","DOIUrl":"https://doi.org/10.14359/2535","url":null,"abstract":"","PeriodicalId":274481,"journal":{"name":"\"SP-126: Durability of Concrete: Second International Conference, Montreal, Canada 1991\"","volume":"40 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1991-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132663938","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: 9
"Comparative results of utilization of fly ash, silica fume and GGBFS in reducing the chloride permeability of concrete" 粉煤灰、硅灰和GGBFS降低混凝土氯离子渗透性的比较研究
"SP-126: Durability of Concrete: Second International Conference, Montreal, Canada 1991" Pub Date : 1991-08-01 DOI: 10.14359/2255
W. Ellis, E. H. Riggs, W. Butler
{"title":"\"Comparative results of utilization of fly ash, silica fume and GGBFS in reducing the chloride permeability of concrete\"","authors":"W. Ellis, E. H. Riggs, W. Butler","doi":"10.14359/2255","DOIUrl":"https://doi.org/10.14359/2255","url":null,"abstract":"This research project was undertaken to determine the effect on the chloride permeability of concretes of increasing amounts of fly ash in low water/cementitious material ratio concrete, as compared with comparable high quality concretes containing combinations of portland cement, silica fume and ground granulated blast furnace slag. The test method utilized was the Rapid Determination of the Chloride Permeability of Concrete (AASHTO T-277). Fifteen superplasticized concrete mixtures were evaluated for compressive strength at ages of 28 and 56 days, and for chloride permeability at 56 days. The inclusion of fly ash, silica fume, and ground granulated blast furnace slag all significantly reduced the chloride permeability of concrete, as compared with concrete containing portland cement only. Increasing amounts of fly ash generally showed decreased permeability in the tests conducted.","PeriodicalId":274481,"journal":{"name":"\"SP-126: Durability of Concrete: Second International Conference, Montreal, Canada 1991\"","volume":"46 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1991-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133252568","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: 37
Carbonation of Expansive Concrete and Change of Hydration Products 膨胀混凝土的碳化及水化产物的变化
"SP-126: Durability of Concrete: Second International Conference, Montreal, Canada 1991" Pub Date : 1991-08-01 DOI: 10.14359/2457
E. Sakai, K. Kosuge, S. Teramura, K. Nakagawa
{"title":"Carbonation of Expansive Concrete and Change of Hydration Products","authors":"E. Sakai, K. Kosuge, S. Teramura, K. Nakagawa","doi":"10.14359/2457","DOIUrl":"https://doi.org/10.14359/2457","url":null,"abstract":"Microstructure and mechanical properties of concrete with expansive additive are reported compared with ordinary concrete. Samples of long-term concrete (22 years) were collected from an actual building built in 1967 with calcium sulfoaluminate (CSA) used as expansive additive. Hydration products were separated from these samples by using heavy media and analyzed by means of DSC, XRD and FT-IR. The morphology of the mortar portion was observed by SEM. No differences were detected on the carbonation depth and the compressive strength between CSA concrete and ordinary concrete. Qualitative analysis shows that following carbonation of concretes, C-S-H was changed to silica gel or to C-S-H with low Ca/Si ratio and decomposed to CaCO (sub 3), whereas ettringite (AFt), presents in CSA concrete, was decomposed to CaCO (sub 3), Al (OH) (sub 3) gel and gypsum. Quantitatively, hydration products in carbonated CSA concrete are larger than in carbonated ordinary concrete. Therefore, decomposition rate of AFt by carbonation is slower than that of C-S-H.","PeriodicalId":274481,"journal":{"name":"\"SP-126: Durability of Concrete: Second International Conference, Montreal, Canada 1991\"","volume":"22 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1991-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116479702","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
Durability of Pozzolanic Cements and Italian Experience in Mass Concrete 火山灰水泥的耐久性与意大利大体积混凝土的经验
"SP-126: Durability of Concrete: Second International Conference, Montreal, Canada 1991" Pub Date : 1991-08-01 DOI: 10.14359/3641
F. Massazza, G. Oberti
{"title":"Durability of Pozzolanic Cements and Italian Experience in Mass Concrete","authors":"F. Massazza, G. Oberti","doi":"10.14359/3641","DOIUrl":"https://doi.org/10.14359/3641","url":null,"abstract":"In comparison to portland cements, pozzolanic cements are more resistant to various aggressive agents such as pure and acidic water, chlorides, and sulphates. Furthermore, they can also prevent expansion caused by alkali-aggregate reaction. Provided that concretes having the same strength are compared, carbonation depth of pozzolanic cements is similar to that of portland cements. In Italy, where they have been used extensively for the construction of buildings and civil engineering works, pozzolanic cements accounted for over 15 million tons of cement prodcution in 1989. Direct evidence of the durability of pozzolanic cements is provided by many Italian dams built over forty years ago which - despite heavy and varied environmental conditions - still show good serviceability.","PeriodicalId":274481,"journal":{"name":"\"SP-126: Durability of Concrete: Second International Conference, Montreal, Canada 1991\"","volume":"58 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1991-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125498050","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: 14
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