A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
OPPORTUNITIES AND CHALLENGES OF MODERN CONCRETE TECHNOLOGY INEARTHQUAKE HAZARD MITIGATION
Abstract Concrete technology has made significant advances in recent years, which are slowly finding their way into design practice to improve the behavior of structures in seismic regions. Reinforced concrete has long been considered less suitable for earthquake-resistant construction than other materials, until engineers learned how to make it ductile through proper reinforcement. Utilizing latest advances in fiber-reinforced concrete technology it is now possible to engineer the properties of the material such that it not only becomes very ductile, but also exhibits strain hardening, thereby making it ideally suited not only for blast- and impact-resistant structures but also for earthquakeresisting structures. If properly designed, it should be possible to eliminate much or all of shear and confinement reinforcement, thereby considerably improving the constructability, performance, and cost of concrete structures. There remain numerous challenges to achieve such a goal. A lack of consensus in the research community has so far prevented the adoption of standards for mechanical property tests and quality control. In addition, issues of randomness of material properties, with which the industry always had to cope with, need to be addressed in a comprehensive manner to allow designers to offer acceptable reliability at a reasonable cost. This paper briefly summarizes advances in highperformance fiber-reinforced cement composites and in self-consolidating concrete and their implications for earthquake-resistant design of structures. It concludes with comments on the current status of efforts at standardization and codification to facilitate technology transfer to engineering practice.
OPPORTUNITIES AND CHALLENGES OF MODERN CONCRETE TECHNOLOGY INEARTHQUAKE HAZARD MITIGATION
Abstract Concrete technology has made significant advances in recent years, which are slowly finding their way into design practice to improve the behavior of structures in seismic regions. Reinforced concrete has long been considered less suitable for earthquake-resistant construction than other materials, until engineers learned how to make it ductile through proper reinforcement. Utilizing latest advances in fiber-reinforced concrete technology it is now possible to engineer the properties of the material such that it not only becomes very ductile, but also exhibits strain hardening, thereby making it ideally suited not only for blast- and impact-resistant structures but also for earthquakeresisting structures. If properly designed, it should be possible to eliminate much or all of shear and confinement reinforcement, thereby considerably improving the constructability, performance, and cost of concrete structures. There remain numerous challenges to achieve such a goal. A lack of consensus in the research community has so far prevented the adoption of standards for mechanical property tests and quality control. In addition, issues of randomness of material properties, with which the industry always had to cope with, need to be addressed in a comprehensive manner to allow designers to offer acceptable reliability at a reasonable cost. This paper briefly summarizes advances in highperformance fiber-reinforced cement composites and in self-consolidating concrete and their implications for earthquake-resistant design of structures. It concludes with comments on the current status of efforts at standardization and codification to facilitate technology transfer to engineering practice.
OPPORTUNITIES AND CHALLENGES OF MODERN CONCRETE TECHNOLOGY INEARTHQUAKE HAZARD MITIGATION
MEYER, CHRISTIAN (author)
2006-01-01
13 pages
Article/Chapter (Book)
Electronic Resource
English
OPPORTUNITIES AND CHALLENGES OF MODERN CONCRETE TECHNOLOGY IN EARTHQUAKE HAZARD MITIGATION
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