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

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Acoustic emissions of mortar subjected to freezing and thawing 冻融砂浆的声发射
"SP-126: Durability of Concrete: Second International Conference, Montreal, Canada 1991" Pub Date : 1991-08-01 DOI: 10.14359/2159
H. Shimada, K. Sakai, G. G. Litvan
{"title":"Acoustic emissions of mortar subjected to freezing and thawing","authors":"H. Shimada, K. Sakai, G. G. Litvan","doi":"10.14359/2159","DOIUrl":"https://doi.org/10.14359/2159","url":null,"abstract":"To determine the characteristics of deterioration of concrete under freezing and thawing, acoustic emissions (AE) of mortar were measured and analyzed. Acoustic emissions of ice formation were examined to establish test conditions. In addition, propagation properties of acoustic emissions such as wave velocity and amplitude were examined with an AE pulser.","PeriodicalId":274481,"journal":{"name":"\"SP-126: Durability of Concrete: Second International Conference, Montreal, Canada 1991\"","volume":"7 4 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":"131753307","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: 15
Significance of Microstructure of the Glass Fiber-Cement Paste Interfacial Zone in Long-Term Durability of GFRC Composites 玻璃纤维-水泥浆界面区微观结构对GFRC复合材料长期耐久性的意义
"SP-126: Durability of Concrete: Second International Conference, Montreal, Canada 1991" Pub Date : 1991-08-01 DOI: 10.14359/2388
M. Kawamura, S. Igarashi
{"title":"Significance of Microstructure of the Glass Fiber-Cement Paste Interfacial Zone in Long-Term Durability of GFRC Composites","authors":"M. Kawamura, S. Igarashi","doi":"10.14359/2388","DOIUrl":"https://doi.org/10.14359/2388","url":null,"abstract":"The long-term durability of glass fiber reinforced (GRF) mortars and concretes manufactured by the pre-mixing method was investigated. Microhardness measurements and the quantitative back scattered electron image (BSE) analysis were made in the regions around glass fiber strands embedded in the cement paste. Changes of flexural strength and toughness in the GFR mortars with age were discussed being related to the features of microstructure in the interfacial regions. The toughness of the GFR mortars decreased with age n response to the increase in microhardness at the immediate vicinity of strands and around 70-100 micrometers from the interface. The solidification in the regions around 70-100 micrometes from interface as well as the formation of the hydration products in the spaces among the glass filaments appear to relate to reduction in toughness in GFRC composites.","PeriodicalId":274481,"journal":{"name":"\"SP-126: Durability of Concrete: Second International Conference, Montreal, Canada 1991\"","volume":"33 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":"133688722","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
Durability Comparisons of Fiber Reinforced Concrete in Chemical Plant Applications 纤维增强混凝土在化工厂应用中的耐久性比较
"SP-126: Durability of Concrete: Second International Conference, Montreal, Canada 1991" Pub Date : 1991-08-01 DOI: 10.14359/3513
C. Macdonald
{"title":"Durability Comparisons of Fiber Reinforced Concrete in Chemical Plant Applications","authors":"C. Macdonald","doi":"10.14359/3513","DOIUrl":"https://doi.org/10.14359/3513","url":null,"abstract":"This paper compares durability performance of non-fiber reinforced concrete and fiber reinforced concrete in chemical plant locations in Michigan and Kentucky. The primary durability indicator is that of crack free, long wearing concrete. The results of these durability performances are applicable to the concrete industry in general, and specifically to the placement of concrete in chemical plants. The results indicate that the best durability performance was from concrete reinforced with steel fiber, polypropylene fiber second, and then non-fiber reinforced concrete. The reasons for this performance are explored from the perspective of what is needed for schedule, cost, and performance of concrete in the various projects and environments to which the concrete is subjected. This investigation was conducted first by the proper design of the concrete mix proportions, and then by follow-up with field surveys, interviews, and calculations.","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":"127945171","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
Control of Steel Corrosion in Chloride Contaminated Concrete Through Aron Wall Surface Coating 通过Aron墙面涂层控制氯化物污染混凝土中钢材的腐蚀
"SP-126: Durability of Concrete: Second International Conference, Montreal, Canada 1991" Pub Date : 1991-08-01 DOI: 10.14359/2225
R. Swamy, S. Tanikawa
{"title":"Control of Steel Corrosion in Chloride Contaminated Concrete Through Aron Wall Surface Coating","authors":"R. Swamy, S. Tanikawa","doi":"10.14359/2225","DOIUrl":"https://doi.org/10.14359/2225","url":null,"abstract":"This paper presents extensive test data on the ability of, ARON WALL, an acrylic rubber type coating in fulfilling two important functions: preventing chloride intrusion and ingress of water, air and other destructive agents. Tests on coated and uncoated reinforced concrete prisms containing various amounts of added sodium chloride and exposed to sea water are reported. The results show conclusively that ARON WALL coating prevents the intrusion of air, water and chloride ions, and provides excellent protection to steel in chloride contaminated concrete while maintaining its adhesion to concrete, integrity and continuity.","PeriodicalId":274481,"journal":{"name":"\"SP-126: Durability of Concrete: Second International Conference, Montreal, Canada 1991\"","volume":"88 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":"125033768","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
Deicer Salt Scaling Resistance of High Strength Concretes Made With Different Cements 不同水泥配制的高强混凝土的抗除冰盐结垢性能
"SP-126: Durability of Concrete: Second International Conference, Montreal, Canada 1991" Pub Date : 1991-08-01 DOI: 10.14359/2115
R. Gagné, M. Pigeon, P. Aitcin
{"title":"Deicer Salt Scaling Resistance of High Strength Concretes Made With Different Cements","authors":"R. Gagné, M. Pigeon, P. Aitcin","doi":"10.14359/2115","DOIUrl":"https://doi.org/10.14359/2115","url":null,"abstract":"Seventeen concrete mixtures were prepared to evaluate the deicer salt scaling resistance of some high strength concretes with a 28 days strength in the 60-90 MPa range. A 0.30 water/(cement + silica fume) ratio was used for most of the mixtures and 3 additional mixtures were prepared with a 0.26 water/(cement + silica fume) ratio. In the 0.30 mixtures, two types of cements and a silica fume were used (Type III, Type III + 6 percent silica fume, Type I + 6 percent silica fume), and in the 0,26 mixes, only Type I + 6 percent silica fume. All specimens were submitted to 150 daily cycles freezing and thawing in accordance with ASTM C672, using sodium chloride as a deicer. For all concretes, the weight loss after 50 cycles was lower than 0.75 kg/m (squared) and under 2 kg/m (squared) after 150 cycles, and no clear relationship was found between the scaling resistance and the spacing factor. Based upon results in this study, and in others, it seems that the use of a water/(cement + silica fume) ratio of 0.30, a good quality coarse aggregate and a portland cement with silica fume generally allows the production of non-air-entrained concretes with a good deicer salt scaling resistance, even after only 24 hours of curing. It is also possible, with certain Type III cements, to produce deicer salt scaling resistant non-air-entrained concretes without using silica fume.","PeriodicalId":274481,"journal":{"name":"\"SP-126: Durability of Concrete: Second International Conference, Montreal, Canada 1991\"","volume":"26 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":"131836662","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: 8
Resistance of High Strength Concrete to Sulfate Attack: Soaking and Drying Test 高强混凝土抗硫酸盐侵蚀:浸泡和干燥试验
"SP-126: Durability of Concrete: Second International Conference, Montreal, Canada 1991" Pub Date : 1991-08-01 DOI: 10.14359/2498
De Almeida
{"title":"Resistance of High Strength Concrete to Sulfate Attack: Soaking and Drying Test","authors":"De Almeida","doi":"10.14359/2498","DOIUrl":"https://doi.org/10.14359/2498","url":null,"abstract":"The sulfate resistance of concretes with compressive strengths between 60 and 110 MPa was evaluated. The test comprises several soaking/drying cycles of samples in a Na sub 2 SO sub 4. 10H sub 2 O solution, followed by measurement of mass variation and residual compressive strength. Visual inspection and sulfate recovery by distilled water immersion increased the accuracy of test results. Results reveal significant differences compared to those test normally used, involving prolonged immersion. The resistance to sulfate attack depends on concrete porosity and capillary absorption, and not on permeability, because pozzolanic reactions seem to interrupt pore continuity. The reduced w/c ratio obtained with the aid of the super-plasticizer was much more effective than the chemical characteristics related to the presence of mineral admixtures in concrete, as regards its resistance to sulfates.","PeriodicalId":274481,"journal":{"name":"\"SP-126: Durability of Concrete: Second International Conference, Montreal, Canada 1991\"","volume":"59 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":"132977688","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: 11
Freezing and Thawing Durability of High-Strength Lightweight Concretes 高强轻量化混凝土的冻融耐久性
"SP-126: Durability of Concrete: Second International Conference, Montreal, Canada 1991" Pub Date : 1991-08-01 DOI: 10.14359/2038
D. Whiting, R. Burg
{"title":"Freezing and Thawing Durability of High-Strength Lightweight Concretes","authors":"D. Whiting, R. Burg","doi":"10.14359/2038","DOIUrl":"https://doi.org/10.14359/2038","url":null,"abstract":"","PeriodicalId":274481,"journal":{"name":"\"SP-126: Durability of Concrete: Second International Conference, Montreal, Canada 1991\"","volume":"11 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":"131258659","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
Protection of Steel Reinforcing by the Passivating Effect of Lightweight Concrete 轻量混凝土的钝化作用对钢筋的保护作用
"SP-126: Durability of Concrete: Second International Conference, Montreal, Canada 1991" Pub Date : 1991-08-01 DOI: 10.14359/3811
V. Stepanova
{"title":"Protection of Steel Reinforcing by the Passivating Effect of Lightweight Concrete","authors":"V. Stepanova","doi":"10.14359/3811","DOIUrl":"https://doi.org/10.14359/3811","url":null,"abstract":"","PeriodicalId":274481,"journal":{"name":"\"SP-126: Durability of Concrete: Second International Conference, Montreal, Canada 1991\"","volume":"79 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":"133375674","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
Barges Topped with Abrasion Resistant Concrete 驳船顶部有耐磨混凝土
"SP-126: Durability of Concrete: Second International Conference, Montreal, Canada 1991" Pub Date : 1991-08-01 DOI: 10.14359/3824
H. R. Woodhead
{"title":"Barges Topped with Abrasion Resistant Concrete","authors":"H. R. Woodhead","doi":"10.14359/3824","DOIUrl":"https://doi.org/10.14359/3824","url":null,"abstract":"","PeriodicalId":274481,"journal":{"name":"\"SP-126: Durability of Concrete: Second International Conference, Montreal, Canada 1991\"","volume":"86 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":"114623513","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
Moisture Sensitivity of Cellulose Fiber Reinforced Cement 纤维素纤维增强水泥的水分敏感性
"SP-126: Durability of Concrete: Second International Conference, Montreal, Canada 1991" Pub Date : 1991-08-01 DOI: 10.14359/2398
P. Soroushian, S. Marikunte
{"title":"Moisture Sensitivity of Cellulose Fiber Reinforced Cement","authors":"P. Soroushian, S. Marikunte","doi":"10.14359/2398","DOIUrl":"https://doi.org/10.14359/2398","url":null,"abstract":"","PeriodicalId":274481,"journal":{"name":"\"SP-126: Durability of Concrete: Second International Conference, Montreal, Canada 1991\"","volume":"311 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":"116614403","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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