Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Experimental Study on Properties of Sprayed Ultra-High-Strength Fiber-Reinforced Concrete with Mixed Copper and Polypropylene Fibers
Infrastructure constructed around 60 years ago during Japan’s postwar period of high economic growth (1955–1973) is now facing the problem of aging. As a consequence, an era of maintenance and repair is approaching. There is expectation that sprayed ultra-high-strength fiber-reinforced concrete (UFC) will be a suitable repair material in many cases.
UFC generally offers high strength, toughness, and durability. However, there is a problem with the workability of UFC because of its high viscosity, leading to experimental efforts aimed at achieving high strength, durability, pumpability, and adhesion when spraying UFC.
This paper presents research on the hardening properties and physical properties of sprayed ultra-high-strength fiber-reinforced mortar containing a mix of copper and polypropylene fibers. The results confirm that, even with the addition of chemical fibers, the fresh properties remain similar to those of formulations containing only copper fibers. It is also found that spraying can achieve sufficient cover thickness and that on-site application is possible.
Experimental Study on Properties of Sprayed Ultra-High-Strength Fiber-Reinforced Concrete with Mixed Copper and Polypropylene Fibers
Infrastructure constructed around 60 years ago during Japan’s postwar period of high economic growth (1955–1973) is now facing the problem of aging. As a consequence, an era of maintenance and repair is approaching. There is expectation that sprayed ultra-high-strength fiber-reinforced concrete (UFC) will be a suitable repair material in many cases.
UFC generally offers high strength, toughness, and durability. However, there is a problem with the workability of UFC because of its high viscosity, leading to experimental efforts aimed at achieving high strength, durability, pumpability, and adhesion when spraying UFC.
This paper presents research on the hardening properties and physical properties of sprayed ultra-high-strength fiber-reinforced mortar containing a mix of copper and polypropylene fibers. The results confirm that, even with the addition of chemical fibers, the fresh properties remain similar to those of formulations containing only copper fibers. It is also found that spraying can achieve sufficient cover thickness and that on-site application is possible.
Experimental Study on Properties of Sprayed Ultra-High-Strength Fiber-Reinforced Concrete with Mixed Copper and Polypropylene Fibers
RILEM Bookseries
Mechtcherine, Viktor (Herausgeber:in) / Signorini, Cesare (Herausgeber:in) / Junger, Dominik (Herausgeber:in) / Kenyoshi, Tatsuya (Autor:in) / Fujiwara, Hiromi (Autor:in) / Maruoka, Masanori (Autor:in)
RILEM-fib International Symposium on Fibre Reinforced Concrete ; 2024 ; Dresden, Germany
Transforming Construction: Advances in Fiber Reinforced Concrete ; Kapitel: 17 ; 131-138
RILEM Bookseries ; 54
12.09.2024
8 pages
Aufsatz/Kapitel (Buch)
Elektronische Ressource
Englisch
| British Library Conference Proceedings | 2002
| British Library Conference Proceedings | 2002
Experiments for Strength Properties of Polypropylene Fiber-Reinforced Concrete
| Tema Archiv | 2011