Download or read book The Effect of Secondary Ettringite Formation on the Durability of Concrete written by Robert L. Day and published by Portland Cement Association. This book was released on 1992 with total page 134 pages. Available in PDF, EPUB and Kindle. Book excerpt: The report comprises a review and analysis of the available literature pertaining to the causes, effects and prevention of secondary (delayed) ettringite in concrete . Over 300 publications have been examined . Case studies of damage in concrete possibly caused by secondary ettringite formation are examined first. Fundamental research on secondary ettringite formation, its chemistry, and deposition mechanisms is then reviewed. Key investigations on the topic are analyzed in detail. Next, the potential importance of (a) method of heat-curing and (b) the chemistry of cement is outlined. In the final chapter, a rapid test for evaluation of potential secondary ettringite susceptibility (the "Duggan" test) is evaluated. The analysis indicates that there appears to be a potential for a secondary ettringite formation problem in North America; it is highly probable that secondary ettringite formation can lead to significant deterioration of heat-treated concrete. However, it is unlikely that secondary ettringite formation is, or will be, the sole mechanism responsible for premature deterioration. The critical factors that determine extent of damage due to secondary ettringite formation are (a) duration of delay period before heating the concrete; (b) severity of the heating and/or cooling regime ; and (c) the SO3/A1203 ratio of the cement. There is no evidence that nonheat-treated concrete is susceptible to this phenomenon. Further research and improvements to the Duggan test may result in the development of a useful standard test method to assess the long-term dimensional stability and durability of concrete.

Download or read book PRO 1 International RILEM Workshop on Durability of High Performance Concrete written by H. Sommer and published by RILEM Publications. This book was released on 1995 with total page 316 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Significance of Tests and Properties of Concrete and Concrete making Materials written by Joseph F. Lamond and published by ASTM International. This book was released on 2006 with total page 661 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book PRO 35 International RILEM Workshop on International Sulfate Attack and Delayed Ettringite Formation written by Karen Scrivener and published by RILEM Publications. This book was released on 2004 with total page 330 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Effect of High Curing Temperatures on the Strength Durability and Potential of Delayed Ettringite Formation in Mass Concrete Structures written by Lucy Acquaye and published by . This book was released on 2006 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: 3. Concrete mixes containing 18% fly ash and 50% slag and cured at the elevated temperatures resulted in much lower permeability. The low permeability of the blends delayed the onset of ettringite formation as well as the amount formed when compared to the plain cement mixes. This was particularly evident in the slag mixes.

Download or read book Ettringite Formation and the Performance of Concrete written by and published by . This book was released on 2001 with total page 20 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Sulfate Attack on Concrete written by J. Marchand and published by CRC Press. This book was released on 2001-10-11 with total page 230 pages. Available in PDF, EPUB and Kindle. Book excerpt: Sulfate Attack on Concrete provides a comprehensive reference to this important subject. It covers: a short history of concrete deterioration due to sulfate attack, the origin of sulfates in concrete, the importance of appropriate concrete processing, forms and physical-chemical mechanisms of concrete deterioration due to sulfates, preventative mea

Download or read book Ettringite written by Bernard Erlin and published by . This book was released on 1999 with total page 280 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Fundamentals of High Performance Concrete written by Edward G. Nawy and published by John Wiley & Sons. This book was released on 2000-11-16 with total page 468 pages. Available in PDF, EPUB and Kindle. Book excerpt: High performance concrete is a key element in virtually all-large construction projects, from tall office and residential buildings to bridges, tunnels and roadways. The fully updated Second Edition helps professionals to understand the performance capabilities of these construction materials when selecting the type of concrete to use for particular projects. The author is one of the worlds acknowledged experts on high performance concrete.

Download or read book Concrete Petrography written by Alan Poole and published by CRC Press. This book was released on 2016-12-19 with total page 778 pages. Available in PDF, EPUB and Kindle. Book excerpt: This classic reference has established the value of petrography as a powerful method for the investigation of concrete as a material. It provides an authoritative and well-illustrated review of concrete composition and textures, including the causes of defects, deterioration, and failure that can be identified using a petrological microscope. This new edition is entirely revised and updated and also greatly extended to take account of new scientific developments and significant improvements in instrumentation and to reflect current laboratory working practices, as well as to reflect new understanding of the performance of concrete and related materials. Now in full color throughout, Concrete Petrography, Second Edition provides case study examples, with appropriate explanatory discussions and practical advice on selecting, handling and preparing specimens. It assists and guides the engineer, the trainee and the experienced petrographer in understanding the scientific evidence that is basic to petrographic analysis and so will lead to more accurate and timely diagnosis and treatment of problems in structural concrete. This book includes: Contributions in specialist areas by internationally recognized experts Explanation of computer techniques as an aid to petrography Full coverage of inspection, sampling, and specimen preparation New sections covering recent technological development of equipment Guidance on observation of cement and concrete mineralogy and microfabrics Discussion and illustrative examples of deterioration and failure mechanisms New work and guidance on the determination of water/cement ratio New color illustrations and micrographs throughout Thorough updating of standards, other authoritative publications, and references A fully revised, extended, and updated glossary of optical and other properties

Download or read book Deicer freezer thaw Resistance Characteristics of Portland Cement Concrete for Wisconsin Pavements written by Steven M. Cramer and published by . This book was released on 1995 with total page 50 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Mechanisms of Chemical Degradation of Cement based Systems written by K.L. Scrivener and published by CRC Press. This book was released on 1997-04-17 with total page 474 pages. Available in PDF, EPUB and Kindle. Book excerpt: Deterioration of cement-based materials is a continuing problem, as it results in the substantial shortening of the lives of conventional concrete structures. The main costs result from poor performance and the need for early repair. With more advanced applications, where very long service lives are essential, such as the storage of nuclear waste, an understanding of the degradation processes in order to predict long term performance is very important. this book forms the proceedings of the latest Symposia at the Materials Research Society Autumn meeting in Boston.

Download or read book Sixth CANMET ACI International Conference on Durability of Concrete written by V. M. Malhotra and published by Aci International. This book was released on 2003 with total page 1190 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book ICE Handbook of Concrete Durability written by Marios Soutsos and published by Emerald Group Publishing. This book was released on 2023-10-24 with total page 577 pages. Available in PDF, EPUB and Kindle. Book excerpt: ICE Handbook of Concrete Durability, second edition is a comprehensive practical reference for professionals involved in design and maintenance of concrete structures of all types. It is an invaluable guide for construction professionals, including design engineers, consultants and contractors, as well as postgraduate students.

Download or read book Reinforced Concrete Structural Reliability written by Mohamed Abdallah El-Reedy, Ph.D and published by CRC Press. This book was released on 2012-12-15 with total page 379 pages. Available in PDF, EPUB and Kindle. Book excerpt: Structural engineers must focus on a structure’s continued safety throughout its service life. Reinforced Concrete Structural Reliability covers the methods that enable engineers to keep structures reliable during all project phases, and presents a practical exploration of up-to-date techniques for predicting the lifetime of a structure. The book also helps readers understand where the safety factors used come from and addresses the problems that arise from deviation from these factors. It also examines the question of what code is best to follow for a specific project: the American code, the British Standard, the Eurocode, or other local codes. The author devotes an entire chapter to practical statistics methods and probability theory used in structural and civil engineering, both important for calculating the probability of structural failure (reliability analysis). The text addresses the effects of time, environmental conditions, and loads to assess consequences on older structures as well as to calculate the probability of failure. It also presents the effects of steel bar corrosion and column corrosion, and precautions to consider along with guides for design. This book offers guidelines and tools to evaluate existing as well as new structures, providing all available methods and tests for assessing structures, including visual inspection and nondestructive testing for concrete strength. It also presents techniques for predicting the remaining service life of a structure, which can be used to determine whether to perform repairs or take other action. This practical guide helps readers to differentiate between and understand the philosophy of the various codes and standards, enabling them to work anywhere in the world. It will aid engineers at all levels working on projects from the design to the maintenance phase, increasing their grasp of structure behavior, codes and factors, and predicting service life.

Download or read book Reinforced Concrete Structural Reliability written by Ph.D, Mohamed Abdallah El-Reedy and published by CRC Press. This book was released on 2012-12-15 with total page 376 pages. Available in PDF, EPUB and Kindle. Book excerpt: Structural engineers must focus on a structure's continued safety throughout its service life. Reinforced Concrete Structural Reliability covers the methods that enable engineers to keep structures reliable during all project phases, and presents a practical exploration of up-to-date techniques for predicting the lifetime of a structure. The book a

Download or read book Concrete Durability and Service Life Planning written by Konstantin Kovler and published by Springer Nature. This book was released on 2020-04-28 with total page 192 pages. Available in PDF, EPUB and Kindle. Book excerpt: This volume gathers the proceedings of the 3rd International RILEM Workshop on Concrete Durability and Service Life Planning (ConcreteLife’20), held in Haifa, Israel in January 2020. The papers cover a range of topics in concrete curing, cracking in concrete structures, corrosion of steel in concrete, thermal and hygral effects, concrete in cold climates and under high temperatures, recycling, alkali-silica reactions, chloride and sulfate attacks, marine structures, transport phenomena, durability design, microstructure of concrete and volume changes, and life cycle assessment. The book also explores future trends in research, development, and practical engineering applications related to durable concrete construction, and focuses on the design and construction of concrete structures exposed to various environmental conditions and mechanical loading. Given its scope, it offers a valuable asset for all researchers and graduate students in the areas of cement chemistry, cement production, and concrete design.